697 results found.
... Science Frontiers ONLINE No. 71: Sep-Oct 1990 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Two Hot Spots On Mercury Radio telescopes can give planetary astronomers a rough idea of the temperature existing several feet below the surface of a distant planet. Scrutinizing Mercury with their big electronic "ears," they have found two spots on the plamet where the temperatures are several hundred degrees higher than in the surrounding areas. Actually, these hot spots are easy to understand; because, to a Mercurian, the sun comes to a stop in the sky over one of these points and then moves backwards to the other point 180 away. As the sun tarries over these two spots, it heats them preferentially. The strange apparent motion of the sun is due to the 3:2 ratio between Mercury's period of revolution around the sun (88 days) and its axial spin period (59.6 days). What is surprising is that the energy detected radiating from the two hot spots is all reradiated solar energy; that is, there seems to be no contribution at all from Mercury's core! If no heat is leaking out of Mercury's core, the core itself is very likely solid. If it is solid, it cannot establish convection cells and thus generate a magnetic field through dynamo action. But back in 1975, the Mariner 10 spacecraft radioed back that Mercury actually does possess a magnetic field, and a surprisingly large one at that. (Wilford, John Noble; "Theory of Mercury ...
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... Science Frontiers ONLINE No. 130: JUL-AUG 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Two Wrong-Way Phenomena!Electrical currents flowing in opposite directions. How can this be? What about Ohm's Law? This counterintuitive situation was confirmed in a recent issue of Science. Now two teams of researchers have induced millions of electrons to flow simultaneously both ways around a superconducting ring with a non-superconducting notch in it, a gizmo known as a superconducting quantum interference device, or SQUID. This is all pretty weird but it just one more paradoxical phenomenon allowed by quantum mechanics. You see, in quantum mechanics, an object can exist in two or more states at the same time. This is, of course, a statement of fact rather than an explanation appealing to one's common sense -- a common occurrence in the quantum world. (Cho, Advising "Physicists Unveil Schroedinger's SQUID," Science, 287:2395, 2000) Heat flowing from cold to hot. The revered Second Law of Thermodynamics seems to tell us that heat always flows from hot to cold. But out in space, under special conditions, physicists seem to hedge a bit. The groundbreaking experiment was carried out onboard the Mir space station last year as part of the French-Russian Perseus mission. By warming a copper-and sapphire-walled cell filled with a drop of liquid sulfur hexafluoride and one tiny bubble of gaseous sulfur hexafluoride in near-zero gravity, scientists triggered a slight compression of ...
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... Science Frontiers ONLINE No. 90: Nov-Dec 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A Tale Of Two Noses The vomeronasal and olfactory sensory systems. (L . Stansass, M. Reingold) First: An Anecdote. Some 30 years ago, D. Berliner, at the University of Utah, was studying human skin. To acquire raw material, he scraped skin cells from the insides of casts discarded by skiiers who had had broken bones. From this debris, Berliner extracted numerous chemical compounds. As far as anyone could tell, these substances were odorless, so he stored them in open flasks. However, Berliner noticed that when people were working in the lab with the flasks, they were more friendly and relaxed than normal. He could not divine the reason until some months later when he decided to cover the flasks of skin-derived substances. Curiously, the lab workers soon reverted to their usual grumpy selves! What could account for this strange behavior change? Knowing that animals often communicated with one another employing chemicals called pheromones, Berliner suspected that the flasks had been releasing odorless human pheromones. Sure enough, analysis of the skin-derived materials proved him correct. Next: A Look Up the Nose. Biologists have long realized that animal noses actually contain two sensory channels. The first is the familiar olfactory system, which humans also possess. The second channel is the vomeronasal system. In animals, each system has its own separate organs, nerves, and bumps in the brain. The function ...
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... Science Frontiers ONLINE No. 117: May-June 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Two Catastrophe Scenarios We present below two reconstructions of major terrestrial catastrophes. Both are based on sound geological research: deep-sea cores, seismic profiles, and the like; but the reconstructions of the events are on the speculative side, particularly in matters of the magnitudes of the effects. Both events also purport to explain long-standing puzzles. Scenario #1 . The Bosporus silt plug blows. During the last Ice Age, sea levels dropped hundreds of feet exposing the continental shelves. The planet's great rivers cascaded over the edges in great waterfalls. The rocky sill at Gibraltar kept the Atlantic waters out of the Mediterranean, and this sea began to dry up. Farther to the east, the Black Sea was now cut off from the Mediterranean's salty water by the silt-choked Bosporus, that narrow strait separating Asia Minor from Europe. In consequence, the Black Sea became a vast fresh-water lake fed by Europe's rivers to the north. The Ice Age eventually waned, and the oceans and Mediterranean began to rise. About 7,000 years ago, the hydraulic pressure on the Bosporus silt plug became too great and it popped. Salty Mediterranean water poured into lowlands around the Black Sea. Scientists estimate that 50 cubic kilometers of water surged through the Bosporus each -- 200 Niagaras in one colossal waterfall. Falling some 150 meters, the thunder of falling water might have been heard ...
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... Science Frontiers ONLINE No. 99: May-Jun 1995 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Why does spaghetti break into three pieces instead of two?R. Feynman carried out spaghetti experiments but did not deign to theorize on why he almost always ended up with three pieces each time he attempted to break a piece in two. Fortunately for science, O. and R. Nickalls have come up with an answer. "We can only assume that Feynman was not really trying, since when we investigated this profound and fundamental problem in our own kitchen laboratory, not only did we quickly establish the underlying mechanism, but we even went on to formulate the following general rule for linear spaghetti structures:- If a spaghetti stick is uniformly bent until it fractures and ejects a third piece, then the third piece is always ejected outwards from the convex side. "When the spaghetti fractures for the first time, the two remaining pieces then spring outwards, and providing there is a sufficiently weak potential fracture site on the opposite side a second fracture occurs, resulting in a third piece being ejected away from the initially convex side." (Nickalls, Oliver and Richard; "Linear Spaghetti," New Scientist, p. 52, 1995) Comment. We have omitted the mathematical analysis of this complex phenomenon because it involves tensor analysis! From Science Frontiers #99, MAY-JUN 1995 . 1995-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 81: May-Jun 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Biological Evidence For Two Very Early New World Contacts Talking turkeys? Did the Vikings ship American turkeys back to Europe circa 1010 AD from their reputed colonial foothold in Massachusetts? Some radical archeologists think so, pointing to two old depictions of turkey-like birds from Precolumbian Europe. The upper figure was painted on a wall in Schleswig Cathedral about 1280. The lower sketch is reputed to be from the Bayeux Tapestry, which dates back to 1066-1077. (Anonymous; "Talking Turkey," Fortean Times, no. 61, p. 27, February-March 1992.) Comment. The Bayeux Tapestry turkey, in particular, questionable. In fact, a careful search has not found it! See: SF#103. An archeological hot potato! Mangaia is a small volcanic island in the Cook Island group. During the excavation of a rock shelter on this island, large fragments of sweet potato were discovered. These were subsequently carbondated at about 1000 AD. "The prehistoric transferral of this South American domesticate into Polynesia obviously raises issues of cultural contact between the coast of South America and the Polynesian Islands. In our view, the most likely transferrors would have been the seafaring Polynesians, on a voyage of exploration to South America and return." (Hather, Jon, and Kirch, P.V .; "Prehistoric Sweet Potato ( Ipomoea batatas ) from Mangaia Island, Central Polynesia," Antiquity, ...
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... Science Frontiers ONLINE No. 66: Nov-Dec 1989 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Doubts About Two Ritually Recited Theories Do you think humans originated in Africa? We have heard for so long now that modern humans got their start in Africa. (This assertion is as hackneyed as: "Life began in a warm little pond"!) There is, of course, some evidence for the African claim. Studies of genetic material and the fossil record are suggestive, although the latter includes the Middle East as a possible birthplace. Other data, however, put the "founding group" of modern humans in Southeast Asia. The iconoclast here is C.G . Turner, II, an anthropologist at Arizona State University. He has analyzed secondary dental traits (number of roots, bumps, etc.) of 12,000 individuals from around the world - both ancient and modern. Turner believes that the "great web of humanity" originated in Southeast Asia. Since then, two large populations, each recognizable by their dental features, have evolved.: (1 ) northeast Asians and the ancient residents of the Americas; and (2 ) southeast Asians, Europeans, ancient Australians, and Africans. Also of note is the close resemblance between native Australians and Africans. (Bower, B.; "Asian Human Origin Theory Gets New Teeth," Science News, 136:100, 1989.) Did the eruption of Thera do in the Minoans? According to popular archeolo-gical doctrine, ...
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... Science Frontiers ONLINE No. 38: Mar-Apr 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Two Snowflake Anomalies Rarely is there anything in the scientific literature suggesting that anything about snowflakes could possibly be mysterious. Surprisingly, two articles on snowflake anomalies have appeared recently. To form at all above -40 F, snowflakes supposedly require a solid seed or nucleus around which ice can crystallize -- or so scientists have assumed for many years. It was long believed that airborne dust, perhaps augmented by extraterrestrial micrometeoroids, served as the necessary nuclei. But cloud studies prove that there are about a thousand times more ice crystals than dust nuclei. Now, some are convinced that bacteria blown off plants and flung into the air by ocean waves are the true nuclei of atmospheric ice crystals. Remember this the next time you tast a handful of snow! (Carey, John; "Crystallizing the Truth," National Wildlife, 23:43, December/ January 1985.) Comment. The possibility that the fall of snow and all other forms of precipitation is largely dependent upon bacter-ia brings to mind the Gaia Hypothesis; that is, all life forms work in unison to further the goals of life. The second item is from Nature and is naturally more technical. After reviewing the great difficulties scientists are having in mathematically describing the growth of even the simplest crystal, the author homes in on one of the fascinating puzzles of snowflake growth: "The aggregation of particles into a growing surface will be determined exclusively by local ...
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... Science Frontiers ONLINE No. 96: Nov-Dec 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Two really deep oceans During our latest anomaly-collecting cycle, we came across two reports on apparently identical phenomena. Neither article mentioned the work of the other! Both groups of scientists processed massive quantities of earthquake records to form "seismic images" of structures deep in the bowels of the earth. (The technique is called "seismic tomography.") Both groups have discerned huge slabs of crust that were once on the planet's surface but were subsequently thrust (" subducted") down under the continents. These slabs are now hundreds of kilometers below the surface, and they have dragged water along with them. In fact, their water inventories may rival today's surface oceans; they may even have been surface oceans themselves millions of years ago before they descended into the infernal regions. Only a few years ago, all geologists maintained that all water in subducted slabs was squeezed out of the rocks by immense pressure and later reappeared at the surface as volcanic steam. Deep ocean #1 . G. Nolet and A. Zielhuis, Princeton seismologists, report a huge reservoir of water about 900 kilometers under present-day Europe. Some 400-500 million years ago, there was an ocean in this locale. (Zimmer, Carl; "The Ocean Within," Discover, 15:20, October 1994.) Deep ocean #2 . H. Wysession, Washington University, has located a water ...
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... Science Frontiers ONLINE No. 114: Nov-Dec 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Lightning Strikes Jet And Possibly Spawns Ball Lightning June 17, 1996. Tewkesbury, England. On this day, two remarkable observations were made a few seconds apart. Even so, one cannot be certain that the first caused the second. For the first observation, there were two witnesses. Both saw lightning strike a low-flying USAF jet. Mrs. E. Shobli wrote the following account: "Two forks of lightning came from the clouds in front of the plane, converged on it and gripped it. The tail end of the plane became illuminated -- vapours came from its end and formed into a bright, dense mass. I thought I was witnessing damage to the plane. The light continued to separate from the plane, downwards like a flare. It appeared as yellow, lit-up gases. These seemed to take shape, becoming brighter and denser, and then move downwards in the same direction as the plane (south). About two seconds after disappearing behind the roof there was an ear-splitting explosion. To my relief the plane reappeared unscathed." At the time of the lightning strikes, the jet was passing over a factory, where a fork-lift driver saw a dazzling blue-white ball bounce along the factory roof and enter the building. Many workers inside were treated to an amazing pyrotechnic display as the ball made its way through the building. "It entered the factory ...
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... Science Frontiers ONLINE No. 33: May-Jun 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The failure of two-dimensional life The fossil record tells us that just prior to the Cambrian explosion of life, the earth was populated by a diverse assemblage of soft-bodied, shallow-water marine invertebrates, some with dimensions as large as 1 meter. This whole group of animals did not survive into Cambrian times, thus ending what has been termed The Ediacaran Experiment. Some paleontologists have tried to find similarities between the Ediacaran and Cambrian life forms to preserve the continuity of life. This has proved difficult, and some scientists now feel that The Edicaran approach to "largeness" was to increase surface area externally. The Ediacarans were therefore shaped like pancakes, tapes, fans, etc. This enabled them to present large areas to the environment for respiration, feeding, and other biological functions. In contrast, many present life forms achieve "largeness" by increasing internal areas, as in the lungs, folded intestines, etc., along with the forced circulation of air, blood, and other sub stances. This latter approach survived, while the two-dimensional Ediacaran Experiment did not. The demise or extintcion of the Ediacarans led Gould, the author of this far-ranging article, to the influence of extinctions on life in general -- a hot topic these days. Gould stated that with natural selection operating, one would expect continual "improvement" in life forms, but that this had not happened. ...
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... Science Frontiers ONLINE No. 118: Jul-Aug 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Two Creations Of Life?The lifeforms called Archaea and Eubacteria follow radically different life styles. The former are very happy in such extreme environments as the salty Dead Sea and the sea-bottom, hydrothermal vents; the latter prosper in bad hamburgers and your gut. Despite their differences, they have always been thought to have evolved from a common ancestor. A more subtle, fundamental difference has now been found. Recall SF#117 and how some terrestrial life forms do incorporate right-handed molecules in their structures, especially in cell membranes? The ubiquitous Eubacteria do this. In the Archaea, however, the same structural components of the cell membranes (glycerophosphates) are left-handed. A subtle difference, but one with deep implications. Some scientists maintain that it is impossible for two organisms relying upon mirror-image versions of the same molecule to have evolved from a common ancestor. Their genomes must be fundamentally different. Conclusion: the Archaea and Eubacteria must have evolved separately, and from different biological wellsprings -- that is, "creations." Such thinking is anathema. M. Kates, a Canadian evolutionary biologist, is skeptical. "Both the physics and chemistry of membranes are so complex that I would regard it as highly improbable that they could have auto-assembled twice." (Barnett, Adrian; "The Second Coming," New Scientist, p. 19, February 14, 1998.) ...
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... Science Frontiers ONLINE No. 20: Mar-Apr 1982 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A TALE OF TWO ECOSYSTEMS -- OR MAYBE MANY MORE Comment. It was quite fortuitous that the following two pieces, found on the same day, fit together so nicely. (Nature is fortuitous!) A group of scientists studying termites have isolated over 100 species of protozoa and bacteria living cooperatively inside the termites gut. Some of the bacteria even live inside the protozoa and other bacteria forming ecosystems of several symbiotic levels within each termite. Each termite itself is part of a complex social "superorganism," the termite colony. That termites had bugs in-side them has long been known; but the new-found complexity and interdependency of life systems within life systems is remarkable. The researchers believe that the life forms inside the termite work together to create the uniform internal environment needed by all inhabitants, just as the termites themselves cooperate to maintain a favorable environment inside their hill. (Anonymous; "And Littler Bugs Inside 'Em," Scientific American, 246:78, February 1982.) The termites, though, are only part of a much larger ecosystem, the earth itself. J.E . Lovelock, in his Gaia, A New Look at Life On Earth, has observed that our planet's environment has actually changed little down the eons despite solar variations. Lovelock's hypo thesis is that all terrestrial life -- animals, plants, termites, etc -- work sym biotically ...
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... Science Frontiers ONLINE No. 71: Sep-Oct 1990 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects WHAT'S ANOTHER DIPOLE OR TWO?" Planetary exploration by deep space probes in recent years has shown that the dipole moment of some mag netized planets has a surprisingly large inclination angle with respect to the rotation axis. It is argued that the inclined dipole thus obtained may not be physically realistic. Applying the method we have developed for the source surface magnetic field of the sun (a spherical surface of 2.5 solar radii), it is suggested that the main dipole of the earth and the magnetized planets is actually axial (the magnetic moment is parallel or antiparallel to the rotation axis), and that two or three smaller dipoles near the core surface are responsible for the apparent inclination of the main dipole." (Akasofu, S-I ., and Saito, T.; "Is the Earth"s Dipole Actually Inclined with Respect to Its Rotation Axis?" Eos, 71: 490, 1990.) Comment. In SF#70, we see that the magnetic field of Uranus is inclined a whopping 60 to its axis of rotation. Can a few, small additional dipoles distort the main field so much? And just what are these small dipoles anyway -- physically and electrically? From Science Frontiers #71, SEP-OCT 1990 . 1990-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 59: Sep-Oct 1988 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Nereid: grotesque shape or two-faced?Nereid, a satellite of Neptune, is peculiar in several ways: Its orbit is retrograde and highly elliptical (1 .4 x 9.7 million kilometers) Its brightness changes by a factor of four as it rotates Its diameter, according to M.W . and B.E . Schaefer (Nature, 333:436, 1988) is thought to be at least 660 kilometers. None of these facts taken alone is anomalous, but (2 ) and (3 ) taken together seem incompatible. If the large brightness changes are due to a highly irregular shape, Nereid's 660-kilometer size is too large, because astronomers agree that gravitational forces will sphericize all objects larger than 400 kilometers. On the other hand, if Nereid is two-faced, like Saturn's moon Iapetus (it's carbon-black on one side, light-colored on the other), astronomers are again faced with trying to explain how such a large solar-system object can acquire so much carbonaceous material on one side only. Also, Nereid's eccentric, retrograde orbit surely hints at a history of capture or orbit disruption. (Weisburd, S.; "Neptune's Nereid: Another Mysterious Moon," Science News, 133:374, 1988. Also: Veverka, J.; "Taking a Dim View of Nereid," ...
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... Science Frontiers ONLINE No. 32: Mar-Apr 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Two Remarkable Inscribed Stones The first stone is located in western Colorado on a remote canyon ledge, overlooking a broad valley with a stream. "The dolmen is four feet across the top and has three placed stones holding it above the ledge in a level position approximately six feet from the cliff face. The Ogam on top of the capstone is intermixed with cupule-like depressions ranging in size from 7 "- 9 " long, 3"-3 " wide and 1 "- 1 " deep in the center. The cupule-like depressions are very striking because of their uniformity, smoothness, and peculiar shape. The Ogam on the side of the capstone is abundant and occasionally connecting with lines on the top. The surface of the dolmen was obviously smoothed and prepared for the inscriptions. The actual age is unknown but the desert varnish on the Ogam, the depressions, and the smoothed surface is substantial." The Colorado inscribed dolmen in situ. The top is also inscribed. Barry Fell has translated the markings, which in his view are in Arabic Ogam, as: Top: God is strong. Strong to help his right hand. Front: The Koran is the unique achievement of the prophet pious and tender. (Morehouse, Judy; "A Colorado Dolmen Inscribed with Ogam," Epigraphic Society, Occasional Publications, 11:209, no. 269, 1983.) Comment. A photograph accompanying the ...
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... Science Frontiers ONLINE No. 40: Jul-Aug 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Mnemonism not so easy!" This paper reports a systematic study of a man (T .E .) with astonishing mnemonic skills. After a brief description of his most favoured mnemonic technique, the 'figure alphabet,' his performance and the mnemonic techniques used on five classical memory tasks are described. These are: one task involving both short- and long-term memory (the Atkinson-Shiffrin 'keeping track' task), two tasks involving just longterm memory (recall of number matrices and the effects of imagery and deep structure complexity upon recall), and two tasks involving just short-term retention of individual verbal items and digit span. Whenever possible, T.E .' s performance was compared with that of normal subjects, and also with other mnemonists who have been studied in the past. There was no evidence to suggest that T.E . has any unusual basic memory abilities; rather he employs mnemonic techniques to aid memory, and the evidence suggests that previous mnemonists who have been studied by psychologists have used very similar techniques." The "figure alphabet" employed by T.E . was used in Europe as early as the mid-1700s. The Hindus had a Sanskrit version even earlier. Basically, each digit is represented by a consonant sound or sounds: 1 2 3 4 5 6 7 8 9 0 T N M R L J K F P Z D Ng G ...
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... Science Frontiers ONLINE No. 126: Nov-Dec 1999 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Ancient Stage Design In past issues of SF we have reported on the acoustical properties of rock-art sites (SF#83 and SF#123) and megalithic chambers (SF#102). This ancient recognition and use of the properties of sound to impress gatherings of people is rather remarkable for 4,000-5000 years ago. But we must be even more appreciative of megalithic-age talents when we discover that they also wedded visual effects with acoustical engineering when staging rituals and ceremonies. In effect, they were pioneering the design of auditoriums and church interiors. This marriage of architecture and sound was studied at two megalithic sites by A. Watson and D. Keating. Since we have previously attended to the acoustics of stone chambers, we will bypass their work on the huge chambered cairn called Camster Round and focus on the recumbent stone circle (RSC) called Easter Aquorthies near Aberdeen, Scotland. That RSCs are not ordinary stone circles is seen in this quotation from the paper by Watson and Keating. "Recumbent stone circles possess a number of characteristic features that have primarily been interpreted in visual or aesthetic terms. For example, their standing stones tend to be graded in height towards the southwest, creating a visual focus for the the large recumbent block itself, which lies between the two tallest stones. The recumbent at Easter Aquorthies is elaborated by two stones which project from its inner face to form an alcove. ...
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... Science Frontiers ONLINE No. 121: Jan-Feb 1999 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Lake Champlain's Two Seiches The main body of Lake Champlain is 117 kilometers long, with an average breadth of 6.3 kilometers, and average depth of 29 meters. Although its shoreline in complex, there is a deep channel about 2 kilometers wide with steep sides running lengthwise along the lake floor. When wind blows across the lake's surface, wind-drag pushes surface water downwind. When the wind stops or changes direction, the piled-up water is freed, and standing waves are set up as the water sloshes back and forth in the lake basin. These waves are called "seiches." Lakes usually have characteristic periods of oscillation. For Lake Champlain, it is 4 hours, with amplitudes measured only in centimeters on the surface of the water. What makes Lake Champlain of more than usual interest is the presence of a second seiche, an internal phenomenon not visible on the surface. In the summer, Lake Champlain is stratified with a thermocline separating a layer of warm surface water from much colder deep water. You can only "see" the thermocline if you lower a thermometer into the water. This thermocline also exhibits seiches, but they are startlingly different from those on the surface. In Lake Champlain, the period of the internal seiche is 4 days rather than 4 hours. The amplitudes fall between 20 and 40 meters instead of being in the centimeter range. Just a few meters ...
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... Science Frontiers ONLINE No. 85: Jan-Feb 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Two Tsumani Tales Only a few years ago astronomical catastrophism was denied as a major factor in geological change. Now one reads everywhere of huge terrestrial impact craters, iridium layers, and tektite deposits. Even so, one necessary consequence of 70% of the large impacts has been neglected until recently: the giant tsunamis and marine incursions that must have swept over the coasts of the continents following impacts at sea. This oversight is now being rectified. 100,000 BP. The South Pacific. A longstanding geological enigma of the New South Wales coastline is the curious distribution of sand dunes. Those headlands less than 40 meters high have lost most of their dunes, leaving only raw, unweathered rock. On the other hand, the higher headlands have retained these dunes. Australians B. Young and T. Bryant hypothesize that a tsunamis 40 meters high swept the lower headlands clean about 100,000 years ago. They can even plot the incoming wave's direction, because a few remnants of the coastal dunes still cling to the southwest corners of the headlands along the NSW coast south of Newcastle. In their scenario, the tsunamis came from the northeast, smashed into the Solomons, southeastern Australia, and northeastern New Zealand. The Great Barrier Reef protected northeastern Australia from the full force of the wave. Young and Bryant favor a Hawaiian landslip as the initiator of the tsunamis, but acknowledge that an asteroid impact could also have done ...
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... Science Frontiers ONLINE No. 125: Sep-Oct 1999 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Two Down-Falls "Falls" are a Fortean staple, particularly showers of fish and frogs. But the sky produces other exotic materials, such and blocks of ice and (ugh!) raw sewage. July 26, 1998. Rue, Switzerland. "On Sunday July 26, 1998, at around 9h 45m Central European DaylightSaving Time (7h 45m UT), a Rue farming couple were in front of their house when they heard a whistling sound "like a big rocket on August 1" (Swiss national holiday). They just had time to see a block of ice the size of a "football" pass in front of their field of vision and crash into the tarred path near to their farm. The block broke up into thousands of pieces and the witness recuperated [sic] the largest which was "the size of a skittle." The ice was "very hard" and "snow-colored." "The witness estimated the weight of the ice block at 7-8 kg and the piece he was able to recuperate at 6-7 kg. Unfortunately, he did not think of conserving the block in the freezer, and let it melt near his house after having shown it to his neighbor, who had also heard the noise." Swiss aviation officials claimed they could not identify any aircraft that might have been responsible "because of incertitude over the time of the incident" ...
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... Science Frontiers ONLINE No. 103: Jan-Feb 1996 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Two Probable Frauds That turkey on the Bayeux Tapestry. Fortunately, we added a caveat when we mentioned this turkey (see sketch) in SF#81. If said turkey really appears on the Bayeux Tapestry, which dates back to the Eleventh Century, it would clearly indicate Precolumbian contact with the New World. However, careful study of a copy of the Tapestry has failed to find this typically New World bird anywhere. (Sørensen, Erik Ringdal; personal communication, November 2, 1995) That crystal skull in the British Museum. Considered a first-class anomaly, this compelling artifact is carved out of hard crystalline quartz. It is said to exert an eerie effect on its viewers. Some say it was carved by the Atlanteans, but the Aztecs are generally credited with this amazing job of manufacture. The big puzzle is: How could the Aztecs have done it without modern lapidary tools -- the skull is so smooth and perfect? Well, maybe the Aztecs didn't carve it! A. Rankin, of Kingston University, has examined the tiny trails made by fluid inclusions in the quartz matrix. He finds that they are characteristic of Brazilian quartz. In fact, there seem to be no suitable sources of massive quartz crystals anywhere in Mexico; and the Aztecs do not appear to have made any incursions into Brazil. Even worse, British Museum experts have now found small cuts made by steel tools on ...
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... Science Frontiers ONLINE No. 102: Nov-Dec 1995 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects 2,000,000,000 BC: THE EPOCH OF QUASARS Quasars are remarkable astronomical objects. Discovered only 30 years ago, they are the most luminous entities in the universe. Supposedly powered by a black hole, each quasar emits hundreds of times more energy than all the billions of stars in the Milky Way. Just how a quasar works is surmise. What we now know from two surveys by two different groups of astronomers is that most quasars have redshifts between 2 and 3. In the theoretical framework of the expanding universe, redshifts are proportional to recessional velocity, distance from the observer, and age. From the redshifts, it seems that the quasar epoch spanned the period 1.9 -3 .0 billion years, based on an age of 15 billion years for the universe. Assuming the accuracy of this scenario, cosmologists now have to explain why quasars were born and flourished in such a narrow time slot. Did something fundamental change in the universe between 1.9 and 3.0 billion years ago? (Kaiser, Jocelyn; "Epoch of Quasars," Science, 269:637, 1995. Wilford, John Noble; "New Survey of Sky Finds Most Quasars are Equally Ancient," New York Times, August 8, 1995, Cr. J. Covey) Comments. Anomalists cannot fail to remark that the above discussion hinges upon four concepts: black holes, an expanding universe, ...
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... Science Frontiers ONLINE No. 54: Nov-Dec 1987 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Esp of atoms?Preamble. Theosophy is an occult doctrine with three professed goals: To form a nucleus of the univer sal brotherhood of humanity, without distinction of race, creed, sex, caste, or color. To encourage the study of comparative religion, philosophy, and science. To investigate the unexplained laws of nature and the powers latent in man. (From: Encyclopedia Americana) Just before the turn of the century, two leaders of the Theosophical movement, Annie Besant and C.W . Leadbeater, decided to collaborate on Goal 3 and investigate the micro-structure of matter. They eschewed the physics laboratory, preferring instead ESP. S. Phillips has now summarized their discoveries in a compact little paper. He concludes as follows: "This article has presented a few examples of the many correlations between modern physics and psychic descriptions of sub-atomic particles published over seventy years ago. Scientists and laypersons alike may find it difficult to believe that Besant and Leadbeater could in some way unknown to science describe the structure of objects at least as small as atomic nuclei, which are about one ten-thousand-billionth of an inch in size. But they cannot in all sincerity dismiss the Theosophists' claims as fraudulent for the obvious reason that they finished their investigations many years before pertinent scientific knowledge and ideas about the structure of sub-atomic particles and the composition of atomic nuclei became available to make fraud possible ...
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... Science Frontiers ONLINE No. 107: Sep-Oct 1996 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Did Mozart Use The Golden Section?Does the brilliance of Mozart's compositions derive entirely from his musical genius, or did he rely in part upon a mathematical construct: the famous Golden Section or Golden Ratio? The Golden Section is a mathematical formula for dividing into two parts: a geometrical line, a musical composition, or anything else possessing the property of length. The ratio of the two divided parts is the Golden Section, which equals 0.618.* For some artists, musicians, architects, the Golden Section is the most esthetic way of dividing the length of anything. For humans, the history of the Golden Section goes back at least as far as Euclid in 300 BC. For nature, it began eons ago: The shapes of pine cones, starfish geometry, and other dimensions of living things incorporate the Golden Section. The questions we address here are: (1 ) Did Mozart consciously make use of this ratio, 0.618, in his music? (2 ) Why is the Golden Section esthetically pleasing? It is not well known that Mozart was fascinated by mathematics as well as music. He even jotted down equations in the margins of some of his compositions. Chances are excellent that he knew of the Golden Section and its reputation for conferring elegance on structures -- even musical compositions. J.F . Putz, a mathematician, has measured some of Mozart's works ...
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... Science Frontiers ONLINE No. 128: MAR-APR 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects How to Win by Loosing (twice)It's all exceedingly counterintuitive. If you switch randomly between two games of chance, each of which is guaranteed to empty your pockets if played separately, you can actually win. This phenomenon can be proved mathematically, but we will not inflict this upon our readers, even if we understood it. Two games played with coins illustrate the effect. One game employs a weighted coin such that the probability of winning is much less than 50%. If played alone, your capital decreases steadily in a rather smooth curve, with a small win now and then but many small losses. The second game requires two weighted coins and is also a losing proposition by itself. Here, though, the graph of your assets vs. the number of games played is a sawtooth. There are sharp increases and downturns, but with an average downward trend. Switching between the two games in a random manner has the effect of locking in a win before the next loss comes along. It's a ratchet effect. Your overall capital will rise, at least it does according to the equations, though your intuition cannot help but doubt it. No wonder this Is called Parrondo's paradox! (Harmer, Gregory P., and Abbott, Derek; "Losing Strategies Can Win by Farrondo's Paradox," Nature, 402:864, 1999. Anonymous; "Losing ...
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... Science Frontiers ONLINE No. 79: Jan-Feb 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Telepathic Rabbits Well, why not? Our experimental study has tried to bring out the existence of a correlation, at a distance, between the physiological reactions of two rabbits from the same litter who had always lived together. We chose photoelectric plethysmography as being the least traumatic method for the rabbits and the one most capable of giving evidence of the physiological reaction specific to stress. Through this method, we studied the coincidences between the outsets of the two rabbits' emotional reactions. Added to the rabbits' isolation through distance, some experiments involved the setting up of sensorial and electromagnetic isolation boxes. We studied the coincidences occurring between the spontaneous emotional reactions of the rabbits as well as the coincidences occurring between the reactions provoked by small stimulae, such as the sound of a bell in one of the boxes. Two series of experiments out of four gave significant results, leading one to think that a conscious or unconscious telepathic link does exist between two rabbits that have close links with each other. (Thouvenin, Bernard; "A Study of Telepathic Phenomena among Rabbits," Revue Francaise de Psychotronique , 1:15, July-September 1988. As abstracted in Exceptional Human Experience , 9:47, June 1991.) From Science Frontiers #79, JAN-FEB 1992 . 1992-2000 William R. Corliss ...
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... Subjects A QUESTIONABLE 200-MILLION-YEAR HIATUS Hiking down into the Grand Canyon of the Colorado is a geological education. As one descends past the beautifully exposed horizontal strata, one also turns back the geological clock in welldefined ticks. That is what the signs along the way say, and that is what all the textbooks proclaim! But when the juncture between the Redwall Limestone and Muav Limestone is reached, a 200million-year gap appears. The sign posted here by the National Park Service reads: An unconformity "Rocks of the Ordovician and Silurian Periods are missing in Grand Canyon. Temple Butte Limestone of Devonian age occurs in scattered pockets. Redwall Limestone rests on these Devonian rocks or on Muav Limestone of much earlier Cambrian Age." This supposed unconformity is puzling for several reasons: The two limestone strata "seem" conformable in most places. Both are nicely horizontal, and there is basically no evidence that 200 million years of erosion and tectonic disturbances separate them. In some places, the two limestone strata intertongue or interfinger, such that by moving vertically one flashed back and forth in 200-million-year jumps. In both limestone strata, one finds layers of the same micaceous shale containing the same fossil tubeworms, suggesting near-simultaneous deposition. In one place, the two limestones clearly grade into one another, with no separation at all. Anyone who walks down the Canyon trails can see that the evidence for a 200-million-year hiatus between the Mississippian and Cambrian limestones is shaky at best. With the accuracy of geological dating through the use of contained ...
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... Science Frontiers ONLINE No. 116: Mar-Apr 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Ultimate In Unisex At the Western General Hospital in Edinburgh, doctors have been examining a "boy" with an ovary and a fallopian tube instead of a left testicle. Part of "his" body's cells are male (one X and one Y chromosome), part female (two X chromosomes). This hermaphrodite-like condition apparently developed because "he" was conceived via in vitro (IVF) fertilization. Probably both a male embryo and a female embryo were transferred to "his" mother's uterus, where they fused and formed a single fetus. (Anonymous; "Two into One," New Scientist, p. 21, January 24, 1998. Cited source: The New England Journal of Medicine, 338:166, 1997.) Comments. We have already cataloged two similar conditions: Human blood-chimeras, where one person has two types of blood due to the absorption of one fetus by its twin, each having different blood types. (BHC15 in Biological Anomalies: Humans II) Birds that are female on one side and male on the other (bilateral gynandromorphism). (BBA1 in our forthcoming Biological Anomalies: Birds) From Science Frontiers #116, MAR-APR 1998 . 1998-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 99: May-Jun 1995 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Untapped Human Mind In 1994, J. Wilding and E. Valentine, both at the University of London, provided the British Journal of Psychology with two studies of people claiming to have exceptional memories. In their second paper (Ref. 2), they detailed the mental workings of TM, a 25-year-old male, and an accomplished user of mnemonics. TM astounds audiences with his seemingly impossible memory feats. These feats, however, are no mystery to TM, and he has carefully explained how it is all mnemonics and nothing paranormal. But there remains the clear implication is that the normal human mind is underestimated and underused. TM's "performances" involve six demonstrations, two of which we now elaborate upon. Demonstration 2. TM asks audiences for birthdates and very quickly gives the day of birth. He has explained this "gift" thusly: "The day of birth calculations were originally carried out through use of a system of numerical codes for years and months which were combined and subjected to certain calculations. However, with practice many shortcuts and mnemonics have been developed and now TM often knows instantly that certain dates imply certain days, like learning the multiplication table. Every year and month has a code from 0 to 6 and TM has learned the codes (by the method explained below) for all years from 1900 to 2000. For any given date the method is to add the ...
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... Science Frontiers ONLINE No. 34: Jul-Aug 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Low-level aurora?June 10, 1982. Near Sturgis, Michigan. About 3:00 A.M ., two young women were driving in a semi-rural area. Fog made visibility poor. It began to rain -- a brown jelly-like slime that smeared the windshield. A rotten-egg odor pervaded the area. The car engine stopped, and the two began to walk to find assistance. After 50 yards, they encountered millions of small rays of "lightning" flashing everywhere. They were 2-3 feet long and reached high into the sky. Looking back toward the car, they saw a reddish fluorescent glow with streams of light coming down from the sky to the glowing region. Grass and weeds along the roadside were standing straight up and glowing. Deep-red lines of light were seen dancing on the road. They returned to the car, and it felt hot to the touch! Soon, clouds moved in and the display was over. The authors of this article personally investigated this event within a few days of its occurrence. They found the two witnesses obviously very shaken, but believe that the accounts are fresh and unadulterated. Also pertinent is the fact that a large solar flare had just occurred, and intense auroral displays had been predicted. Also, the two women were apparently the only witnesses of this phenomenon. (Swords, Michael D., and Curtis ...
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... Science Frontiers ONLINE No. 115: Jan-Feb 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Berkeley Walls Extended For almost two decades, R. Swanson has been searching out the enigmatic stone walls that festoon the Berkeley Hills and beyond, far, it now seems. We first mentioned these walls and provided a photograph back in 1985. (SF#39) Since then, Swanson's labors have received a modicum of public notoriety but hardly a flicker of academic interest. One reason for professional disinterest seems to be that grant money for exploring old walls is nonexistent! To bring new readers of SF up to speed on these perplexing California walls, we quote two paragraphs from a recent article by Swanson. "On the crest of the Berkeley hills there is a long line of large rocks, some are three feet in length, they may weigh a half ton. A century ago they ran for miles on these dry, wind-swept crests then down in a line to what is now the botanical gardens." .. .. . "In the past twelve years, I have visited over forty miles of these stone structures. To call them walls is something of a misnomer. Some do go in a straight line, others twist like a demented snake up a steep hillside, others come in a spiral two hundred feet wide and circle into a boulder with a six-inch knob carved on the top of it. Some are massive, over six feet tall and run for miles." ...
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... Science Frontiers ONLINE No. 101: Sep-Oct 1995 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Ironclad proof of the moon's origin? Did earth and moon "coaccrete" at the same time? That is, did two clouds of debris simultaneously collect and coalesce into two rough spheres, which then began orbiting about a common center of gravity? Or, perhaps the earth and moon were once a single mass that ultimately fissioned due to the gravitational tugging of a passing massive object. If either of these scenarios were correct, earth and moon would have similar bulk compositions. This, however, does not seem to be the case. The abundance and distribution of iron on the moon's surface, as measured by the lunar probe Clementine , indicates that the moon is richer than the earth in refractory (high meltingpoint) compounds. The moon, therefore, almost certainly originated elsewhere, contrary to what most astronomers have longbelieved. Given the constraints of celestial mechanics, the most likely hypothesis postulates a colossal impact involving protoearth and the interloping protomoon. After considerable havoc, the two battered spheres settled down into their present configuration. Thus expire the two most popular theories of the moon's origin. (Lucey, Paul G., et al; "Abundance and Distribution of Iron on the Moon," Science, 268:1150, 1995) From Science Frontiers #101 Sep-Oct 1995 . 1995-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 11: Summer 1980 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects United By An Invisible Cord The largest study of separately raised identical twins has discovered incredible similarities among twins who never set eyes on each other before. There are difference, too, but not as many as expected by psychologists who hold that we are shaped primarily by our environments. Only a few of the astounding (and strange) similarities can be recounted here. Two 39-year-old twins, meeting for the first time, were both wearing seven rings each, two bracelets on one wrist, a watch and one bracelet on the other wrist. Two men both had dogs named Toy, had married and divorced women named Linda, remarried women named Betty, and named their sons James Allan and James Alan. Two other males had similar medical histories: hemorrhoids, same pulse rates and blood pressures, same sleep patterns. Both had put on 10 pounds at the same times in their lives. (Holden, Constance; "Identical Twins Reared Apart," Science, 207:323, 1980.) From Science Frontiers #11, Summer 1980 . 1980-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 68: Mar-Apr 1990 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Two-faced indians trick tigers A significant hazard for fishermen and forest workers in western Bengal is a tiger attack. As these Indians go about their fishing, wood chopping, and honey gathering, tigers are wont to sneak up from behind, spring, and carry off a good-sized meal. But in recent experiments, some 900 volunteers have been wearing human masks on the backs of their heads. This strategem has cut ti-ger attacks drastically. The idea is that tigers, trailing a potential supper, see that human face and figure that the person is alert and watchful. In fact, tigers have been known to track maskwearers for hours without attacking. Pretty clever! How long before the tigers catch on? (Anonymous; "Protective Mimicry in Humans," BioScience, 39:750, 1989.) From Science Frontiers #68, MAR-APR 1990 . 1990-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 58: Jul-Aug 1988 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects One of the most astonishing discoveries of modern science!We take this title from P. Huyghe's recent overview of the "oceans from space" controversy, printed not surprisingly in Oceans . (See p.000.) As readers will recall, we have been following this debate for over two years. Rather than retrace all the details, it is sufficient to say that the scientific community has been generally negative and often condemnatory about L. Frank's assertion and evidence that each year some 10 million icy comets, each averaging sixty compact cars in weight, strike the earth's atmosphere and, in the fullness of time, help fill the ocean basins. In his article Huyghe reviews the considerable evidence that has accumulated supporting Frank's claim: The water in Halley's comet had the same abundances of two key isotopes as the earth's oceans; The rocket detection of unexpected amounts of water vapor in the upper atmosphere; The microwave detection of unusual water-vapor events in the upper atmosphere; The Lyman-alpha detection of hydrogen concentrated near the earth; and The photographic detection of small, incoming objects with the characteristics of the debated icy comets. (Huyghe, Patrick; "Oceans from Space -- New Evidence," Oceans , 21:9 , April 1988.) Item 5. has been reported in other publications: "Using a telescope with a moving field of view ...
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... Science Frontiers ONLINE No. 91: Jan-Feb 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Two-faced planets and moons Several solar-system objects present asymmetrical visages to our telescopes. Mars is a classic case, being much more heavily cratered in its southern hemisphere than its northern. But the dichotomies are not restricted to cratering, as we shall now see. Neptune . Recently, H.B . Hammel, using the University of Hawaii's 2.2 -meter telescope, discovered that Neptune's northern hemisphere is now brighter than its southern -- something never observed before. During the past eight years, the southern hemisphere has been consistently brighter, although the hemispheres were of roughly equal brightness during the late 1970s. The cause of these brightness changes remains a mystery. (Cowen, Ron; "Neptune's Northern Half Grows Brighter," Science News, 144:287, 1993.) Iapetus . This satellite of Saturn is dark on one half and light on the other. Quantitatively speaking, the bright side reflects ten times more incident light than the other. An explanation is suggested by the fact that the dark side points in the satellite's direction of motion. A recent study of 12 Voyager images of Iapetus also imply an exogenous (externally imposed) origin of the dark surface, because they show a gradual rather than sharp transition between the dark and light regions. The thought of planetary scientists is that micrometeoroids bombard the leading hemisphere of Iapetus preferentially and in the process volatilize ...
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... Science Frontiers ONLINE No. 137: SEP-OCT 2001 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Mysterious Losses And Acquisitions of Color Vision The eyes of most mammals incorporate two types of color-sensitive cones; one for seeing blue light, the other for green light. Such mammals have bichromatic vision and discern colors rather well. Humans and the other primates are blessed with trichromatic vision, for their eyes have cones that register red light. Does this indicate evolution superiority? Hardly, birds possess five types of color-sensitive cones that sense two additional parts of the spectrum. How and why these enhancements in color vision occurred are not well-understood. Nor do we know why they were restricted to mammals and birds; although it is easy to fabricate several survival-of-the-fittest scenarios. The "how" part of the mystery is particularly hard to grasp in neo-Darwinian terms because the complex pigments that confer spectral sensitivity upon the cones represent remarkable, complex chemical syntheses. Also mysterious is the apparent loss of color vision in 14 species of toothed whales and seals. (Only 14 species were examined; there may be more.) These particular whales and seals lack the blue-sensitive cones, even though they are descended from mammals with bichromatic vision (hippos and otters, respectively). This deficiency is doubly perplexing: Sensitivity to blue light is highly desirable in the ocean environment because it is blue light that penetrates seawater well. The loss occurred in two mammalian lineages not particularly closely related on ...
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... Science Frontiers ONLINE No. 48: Nov-Dec 1986 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Braille And The Brain The human brain apparently can handle more than one stream of input data simultaneously, as shown by J. Hartley's studies of Braille readers. "A chance observation of a skilled blind reader led me to think that reading braille might provide a more natural task for studying the way in which people do two things at once. My studies of my colleague Lewis Jones suggest that he appears to use some form of parallel processing. Jones cannot recall whether or not he was taught to read Braille with two hands, but in common with other skilled readers of Braille, he has done so for many years. Jones' method of reading is typically as follows. The left forefinger starts to read the beginning of the line. It then meets the the right forefinger returning from the line above. When the two fingers touch, the right forefinger continues to read the line while the left forefinger returns to the beginning of the next line. The whole operation is quite smooth and cyclical, as the diagram...shows. However, I was startled to observe that the left forefinger starts to read the next line before the right forefinger has finished the line above. This overlap, demonstrated by my crude data, suggests that Jones appears to be using some form of parallel processing: it seems as if his brain stores initial information from his left forefinger before using it." S. Miller, at ...
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... Science Frontiers ONLINE No. 56: Mar-Apr 1988 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The new holism -- but is it whole enough?In the short space of two weeks, the New Scientist printed two articles that confront the obvious complexity of nature. Not only is this complexity persistent under the attack of the Second Law of Thermodynamics, but it seems to actually increase with time. Do formative or guiding principles exist that science does not take into account? The two articles have very different answers. The creative cosmos. "Most people accept without question that the physical world is coherent and harmonious. Yet according to the traditional scientific picture, the Universe is just a random collection of particles with blind forces acting upon them. There is, then a deep mystery as to how a seemingly directionless assembly of passive entities conspire to produce the elaborate structure and complex organisation found in nature." The author of this introductory paragraph, P. Davies, asks, as we all do, "What is the origin of this creative power?" In groping for an answer, he presents first a common example of "blind" organization: the hexagonal convection cells in a pan of heated water. Using for a stepping stone the cooperative action of atoms in a laser, he leaps to the development of an embryo from a single strand of DNA! All such systems are "open"; that is, energy can flow in and out. They are also nonlinear, which means that chaotic, unpredictable action ...
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... Science Frontiers ONLINE No. 70: Jul-Aug 1990 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Two Anomalous Types Of Stars Blue straggler stars. The stars comprising a star cluster are usually assigned the same age, since it is thought that they were all created at the same time that the cluster was formed. Lurking in many star clusters, however, are brighter, bluer nonconformists called "blue straggler stars." These stars seem to have about twice the mass of the "normal" cluster members, and they appear to be only about one-fifth as old as their compatriots. The motions of the blue stragglers are consistent with those of bona fide cluster members, implying that they are not interlopers or foreground objects. Several explanations have been suggested to explain the presence of blue stragglers. One thought is that they harbor asteroid-size black holes at their cores. So far, all of the profferred explanations have serious flaws. (Fogg, Martyn J.; "Blue Straggler Stars: A Cosmic Anomaly," The Explorer, 6:4 , Spring 1990.) Socket stars. "A picture book hardly seems a likely source of an astronomical discovery, especially in a world where mysteries of the universe usually tumble from sophisticated electronic instruments attached to huge telescopes. Nevertheless, while recently paging through Exploring the Southern Sky , by G. Madsen and R. West, Walter A. Feibelman (NASA Goddard Space Flight Center) recognized something that had caught his attention decades before. High-resolution photographs of ...
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... Science Frontiers ONLINE No. 125: Sep-Oct 1999 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Two Non-Falls Sometimes things that are predicted to fall or respond dutifully to gravity's dictates do not. No house-size snowballs. Back in 1985, L. Frank saw dark spots on satellite images of the earth's atmosphere. He interpreted them as huge splotches of water created by incoming cometary snowballs. (SF#112, 114, 118, and earlier) Although some other data supported Frank's theory, many scientists scoffed. After some mildly acrimonious debate, a consensus decided that the spots on the satellite photos were merely instrument artifacts. Any lingering doubts as to Frank's house-size snowballs or "icy minicomets" impacting our atmosphere have been dispelled by a radar search by S. Knowles and his colleagues at the Naval Research Laboratory. Using the Naval Space Surveillance System's powerful radar, their scans of the upper atmosphere detected nothing resembling giant snowballs. According to Frank's estimates of the flux of incoming minicomets, the radar should have seen 800-5 ,000 of them. If Frank responds, we'll let you know. This may be the end of this decade-long debate. (Anonymous; "No Snow Show," New Scientist, p. 25, June 12, 1999.) Where water and vehicles run uphill. "Chinese scientists are baffled by a slope in north-western Gansu province where water runs up the incline rather ...
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... the Back of the Young Common Cuckoo BBB AVIAN BEHAVIOR BBB1 Avian Intelligence BBB2 Complexity and Sophistication of Avian Mental Processes BBB3 Enigmas of Instinct BBB4 Anomalous Altruism: Hard to Find BBB5 The Aesthetic Sense in Birds BBB6 Calculated Deception: Birds That Cry "Wolf" BBB7 Avian Play BBB8 Anomalous Aerial Tumbling and Erratic Flight BBB9 Leks: Why Did They Evolve? BBB10 Cooperative Displays on Leks BBB11 Enigmatic Dancing, Flying, Singing BBB12 Anting BBB13 "Hangers"; Upside-Down Birds BBB14 Curious Automatisms BBB15 Handedness (" Footedness") in Birds BBB16 Unusual Aerial Transportation Techniques BBB17 Unusual Forms of Terrestrial Locomotion BBB18 Unusual Hunting Strategies BBB19 Cooperative Hunting BBB20 Prey-Handling Puzzles BBB21 Avian Prey and Food: Some Misconceptions BBB22 Unusual Sexual Behavior BBB23 Avian "Sperm Wars': Cloaca Pecking BBB24 Unusual Mating Systems BBB25 Two Species with a Common Nest BBB26 Determination of Clutch Size BBB27 Exotic Objects and Eggs in Nests BBB28 Unusual Methods of Heating and Cooling Eggs BBB29 Brood Parasitism: How Did It Begin BBB30 Disparities between Parasite Host Adaptations BBB31 Tolerance of Parasite Chicks BBB32 Tolerance of Parasite Eggs Even When They Are Recognized as a Threat BBB33 Murder for Purposes Other Than Food and Brood Reduction BBB34 Infanticide BBB35 Siblicide BBB36 Information Processing in Migratory Behavior BBB37 Uncommon Groupings of Birds BBB38 Flock Synchrony BBB39 Flight Formations BBB40 Avian "Courts" and "Funerals" BBB41 Avian Graveyards BBB42 Huddling and Stacking BBB43 Bird Battles BBB44 Miscellaneous Curiosities of Avian Behavior BBC CHEMICAL PHENOMENA BBC1 Palatable Eggs More Vulnerable to Predation BBC2 Conspicuous Plumage Advertises Unpalatability BBC3 Why Did Stinking Birds Evolve? BBC4 Poisonous Birds and Poison Dart Frogs: Convergent Evolution? BBC5 Are Ratites ...
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... witnesses report a dark, triangular object with three bright lights plus a flashing red one in the middle. Size estimates vary from the size of a football field to that of conventional aircraft. The object sometimes hovers for minutes at a time. It also can move very slowly and then suddenly accelerate to high speeds. Some observers report a faint humming sound; others say that it is noiseless. The American Stealth fighter (Fll7) is roughly triangular, and there has been much speculation that people have been seeing this craft on night missions. The characteristics reported for the flying triangle, however, are hardly those of a jet aircraft. But one must always remember that human observers are imperfect. The July 5, 1990, issue of Paris Match presented a remarkable account of an encounter between two Belgian F16s and one of the flying triangles. We use here those portions of a translation provided by R.J . Durant to the Internation al UFO Reporter (15:23, July/August 1990). "On the night of March 30th, one of the callers reporting a UFO was a Captain of the national police at Pinson, and [Belgian Air Force] Headquarters decided to make a serious effort to verify the reports. In addition to the visual sightings, two radar installations also saw the UFO. One radar is at Glons, south-east of Brussels, which is part of the NATO defense group, and one at Semmerzake, west of the Capitol, which controls the military and civilian traffic of the entire Belgian territory. The range of the two radars ...
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... Science Frontiers ONLINE No. 85: Jan-Feb 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects When a bird in the hand is worse than two in the bush When J. Dumbacher, an ornithologist working in Papua New Guinea, scratched his hand while freeing a hooded pitohui from a collecting net, his first instinct was to suck the wound. This was a bad move, for he immediately experienced a numbing and burning in his mouth. The reason for this, it turned out, was because the skin and feathers of pitohuis are loaded with homobatrachotoxin, a type of poison. This discovery makes the pitohuis the first known poisonous birds. Like many other poisonous animals, the pitohuis also emit a foul odor and advertise their unsavory nature with bright colors. (Dumbacher, John P., et al; "Homobatrachotoxin in the Genus Pitohui : Chemical Defense in Birds?" Science, 258:799, 1992. Also: Anonymous; "Bird with a Sting in Its Tail," New Scientist, p. 10, October 31, 1992.) Comment. As we see from the diagram, homobatrachotoxin possesses a rather complex chemical structure. One wonders how the pitohuis acquired the ability to synthesize it through random mutations. The puzzle deepens when one discovers that homobatrachotoxin is also manufactured by the New World poisondart frogs. Although far-separated taxonomically, both species traveled along the same path of random mutations to achieve this evolutionary convergence. From Science Frontiers #85, JAN-FEB 1993 . 1993-2000 William ...
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... Science Frontiers ONLINE No. 24: Nov-Dec 1982 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects BIOLOGICAL REGENERATION: TWO ANOMALIES Anomaly 1. Contrary to the popular belief that mammals do not regenerate lost digits like the "lower" vertebrates, not only do mice regrow the tips of their foretoes, but young humans can regrow cosmetically perfect fingertips. However, the amputation cannot be too far back, and herein lies the second anomaly. Anomaly 2. Foretoe regeneration in mice is astoundingly sensitive to the site of amputation. Move the site only 0.2 0.3 millimeters farther back and no regrowth will occur. No one understands why such a tiny change in distance completely changes the body's response. (Borgens, Richard B.; "Mice Regrow the Tips of Their Foretoes," Science, 217:747, 1982.) From Science Frontiers #24, NOV-DEC 1982 . 1982-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 39: May-Jun 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Coming Revolution In Planetology "Current ideas about the moon appear to be mistaken on two fundamental points. First, at least within certain large classes of lunar craters, internal origin (i .e ., some form of volcanism) predominates over impact; this result raises questions about the reality of the 'era of violent bombardment.'Second, the origin of tektites by meteoric impact on the earth cannot be reconciled with physical principles and is to be abandoned. The only viable alternative is origin by lunar volcanism, which implies the following: continuance of (rare) explosive lunar volcanism to the present time; existence of silicic lunar volcanism and of small patches of silicic rock at the lunar surface; a body of rock in the lunar interior, probably at great depth, which is closely similar to the earth's mantle and which contains billions of tons of volatiles, probably including hydrogen; and the origin of the moon from the earth after the formation of the earth's core." " Editor's Note . This article by John O'Keefe puts forth a viewpoint with which most planetologists disagree strongly. On the ground that a fresh airing of the long-standing discussion on lunar volcanism is appropriate, Eos offers this article, untouched by editors or referees, and awaits reply by readers." O'Keefe's article reviews considerable evidence supporting his two points: for Point One; crater ...
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... Science Frontiers ONLINE No. 102: Nov-Dec 1995 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Two politically incorrect biochemical anomalies "Whether one views it as females attacking males or as a biological favoritism toward men, the fact is that men's bodies accept donor organs from women while women's bodies reject organs from men. Scientists speculated that a male-specific antigen -- a protein that exists in all cells of a man's body, but in none of a woman's -- causes this incompatibility." (Seachrist, L.' "Finding the Gene for Female Attack," Science News, 148:132, 1995.) Comment. Even so, females obviously do not reject male embryos. For more, see BHI4 "The Enigma of the Fetal Graft" in Biological Anomalies: Humans II*) "It is wellknown that if a bitch urinates on your lawn, you'll get a brown circle of dead grass, whereas a dog's urine does no visible harm. What is the chemical involved and why do only bitches excrete it? Does the same apply to the male and female of other animals (including humans)?" (Wylie, Andrew; "Wee Problem," New Scientist, p. 89, August 5, 1995.) *To order this book, see: here . From Science Frontiers #102 Nov-Dec 1995 . 1995-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 47: Sep-Oct 1986 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Two Points Of Great Impact Geologists have been searching in vain for a large crater that might account for the biological extinctions at the Cretaceous-Tertiary boundary some 65 million years ago. C.J .H . Hartnady believes he had found the culprit. It is somewhat larger than expected (300 kilometers in diameter instead of 100200), but it is of the right age. Supporting this notion is the observation that the Seychelles Bank and Madagascar suddenly shifted their locations at about this time. (Murray, M.; "Point of Impact: The Indian Ocean," Science News, 129:356, 1986.) The existence of another terrestrial cat aclysm at an earlier date is suggested by a layer of shattered crustal rock fragments stretching over at least 260 kilometers in South Australia. Folded within Precambrian marine shales, these fragments reach 30 centimeters in diameter and show evidence of vertical fall. Evidence points to an origin near Lake Acraman, about 300 kilometers west. (Gostin, Victor A., et al; "Impact Ejecta Horizon within Late Precambrian Shales, Adelaide Geosyncline, South Australia," Science, 233:198, 1986.) Reference. The subject of very large terrestrial craters is discussed in ETC2 in our catalog: Carolina Bays, Mima Mounds. Description here . The Amirante Basin (black circle) lies about 500 kilometers north-east of Madagascar. From Science Frontiers #47, SEP-OCT ...
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... Science Frontiers ONLINE No. 127: Jan-Feb 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Throat-Singing Humans are born with one organ that is capable of astonishing performances that greatly exceed what is required for the tracking of animals and the grubbing of edible roots. This is the human brain, of course. Not as widely appreciated for its versatility is the human vocal tract. It can generate much more than brute grunts. It renders operatic arias of great beauty and frequency range. The vocal tract can do even more than that; it can carry two musical lines simultaneously. This skill is called "throat-singing" or "overtonesinging." The best-known throat-singers live in the Tuva region of southern Siberia. The semi-nomadic herders of this wild region were evidently inspired to develop throat-singing so that they could better mimic the sounds they heard in nature: the singing of birds, the wind, the sounds of insects. Throat-songs have two components. The first is at a low, sustained fundamental pitch, which can be likened to the drone of a bagpipe. The second, superimposed on the low drone, is a succession of flute-like sounds that resonates high above the drone. It is the second component that can be controlled so as to mirror natural sounds. The result is like nothing Mozart or Verdi conceived. But it is an art form valued in Tuva and a talent rather remarkable from a biologist's perspective. One should compare the vocal ...
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