392 results found.
... they become more organized, their spacing decreases to a few centimeters, and their visibility improves. After totality ends the bands can reappear and become progressively fainter and more disorganized until they disappear. "Shadow bands seem to move perpendicularly to their length, but this is only an illusion. It stems from a lack of features that allow the eye to track motion along the length of the bands." Codona explains the shadow bands as basically a twinkling effect involving the thin solar crescent just before and after totality. The twinkling is created by turbulence only tens or hundreds of feet above the ground. The eclipse shadow bands, like so many other "well-explained" phenomena, display idiosyncracies that do not dovetail well with theory. Codona mentions two of these: (1 ) Bands of different colors, travelling at different speeds, are sometimes seen superimposed on each other; and (2 ) Bands of giant size have been observed. (Codona, Johana L.; "The Enigma of Shadow Bands," Sky and Telescope, 81: 482, 1991.) Comment. Still other shadow-band anomalies are cataloged in GES1, in Rare Halos, Mirages. This catalog is described here . From Science Frontiers #77, SEP-OCT 1991 . 1991-2000 William R. Corliss ...
Terms matched: 1 - Score: 24 - 15 May 2017 - URL: /sf077/sf077a04.htm
... which all known animal phyla that readily fossilize seem to have originated. The biological phyla are defined by characteristic body plans. Humans, for example, are among the Chordata . Some other phyla are the Arthropoda (insects, crustaceans), the Mollusca (clams, squids), the Nemotada (roundworms), etc. All of these phyla trace their ancestries back to that biologically innovative period termed the Cambrian explosion. Even at the taxonomic level just below the phylum, the class (i .e ., the vertebrates), most biological invention seems to stem from the Cambrian. J.S . Levinton, in a long article in the November 1992 Scientific American, explores the enigma of the Cambrian explosion. Did some unknown evolutionary stimuli prevail 570 million years ago that made the Cambrian different from all periods that followed? Or, has something damped evolutionary creativity since then? Levinton holds that biological innovation has continued unabated at the species level since the Cambrian explosion, but that new body plans; that is, new phyla; have not evolved for hundreds of millions of years. Therefore, something special and very mysterious -- some highly creative "force" -- existed then but is with us no longer. (Levinton, Jeffrey S.; "The Big Bang of Animal Evolution," Scientific American, 267:84, November 1992.) Comment. If evolution is truly the result of random mutation modulated by natural selection, perhaps mutation was "different-from-random" during the Cambrian! Now that's a heretical thought. From Science Frontiers ...
Terms matched: 1 - Score: 24 - 15 May 2017 - URL: /sf085/sf085b05.htm
... Science Frontiers ONLINE No. 42: Nov-Dec 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Left-handers have larger interbrain connections The two halves of the human brain are connected by a bundle of nerve fibers called the corpus callosum. The corpus callosum is thought to help integrate the activities of the right and left brains which, for reasons unknown, seem to specialize in different kinds of mental operations. Studies of the corpus callosum reveal that it is about 11% larger in left-handers than in right-handers. In terms of interconnecting nerve fibers this comes to 25,000,000 more for the left-handers. Just what sort of information flows along these myriad pathways is not known, although we do know that left-handers have greater bihemispheric representation of cognitive functions; i.e ., the brain functions are not so specialized in each half of the brain. But why should left-handers and right-handers be different at all? Are they born with unequal corpus callosa? Or are these nerve highways equal are birth and atrophy in right-handers ? (Witelson, Sandra F.; "The Brain Connection: The Corpus Callosum is Larger in Left-Handers, " Science, 229:665, 1985. ) From Science Frontiers #42, NOV-DEC 1985 . 1985-2000 William R. Corliss ...
Terms matched: 1 - Score: 24 - 15 May 2017 - URL: /sf042/sf042p22.htm
... a Large-Scale Reorganization of Early Cambrian Continental Masses by Inertial Interchange True Polar Wander," Science, 277:541, 1997. Also: Sawyer, Kathy; "Global Shift May Have Sped Evolution," Washington Post, July 25, 1997.) Comment. O.K ., but those much more recent frozen mammoths are still hard to explain. If a chunk of seafloor can founder once, the same thing might have happened twice -- say, just a few thousand years ago. But why should large chunks of seafloor sink so suddenly? Neither reference touches on this! K. Wise has pointed out that actually the Cambrian Explosion did not see the greatest increase in biological innovation. The earlier Archaean Explosion produced 17 new phyla of bacteria employing an extraordinary range of different metabolisms. Although some 38 new phyla did emerge from the Cambrian Explosion, they utilized only one type of metabolism. (Wise, Kurt P., "The Archaean Explosion," CEN Technical Journal, 10:315, 1996.) Comment. What triggered the more innovative Archaean Explosion? Reference. Our Catalog Inner Earth contains a long section entitled "Problems in Measuring and Interpreting Paleomagnetism." This book is described here . This 90 pole shift was synchronous with the Cambrian Explosion of new life forms. Of course, North America really looked quite different then. See Astonomy for a Martian pole shift. From Science Frontiers #113, SEP-OCT 1997 . 1997-2000 William R. Corliss ...
Terms matched: 1 - Score: 24 - 15 May 2017 - URL: /sf113/sf113p07.htm
... 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 Is life a transitory phenomenon?We don't mean just life on earth, where it has hung on for a couple billion years, but life anywhere in the universe. Many cosmologists advance the socalled Anthropic Principle, which states that the physical constants of nature are honed to just the right values to make life possible. If the charge on the electron were a little less or the properties of carbon a bit different, life could not exist. The Anthropic Principle seems to imply that the universe was designed for earth life. But "design" is a bad word these days. It is redolent of purpose and a supernatural being. Suppose, though, that the Anthropic Principle is correct but only in our part of the cosmos and only for a little while. If the constants of nature are not really constant, life could be just a transitory phenomenon, flaring up here and there wherever conditions are ripe and the Anthropic Principle reigns. The cosmos as-a -whole might be lurching toward other goals or, perhaps, toward nowhere in particular. Enough philosophy! A team of Australian astronomers, led by J.K . Webb, has been trying to determine if the famous fine-structure constant of physics has really remained constant throughout the 12-billion years or so of the universe's history. The fine-structure constant is dimensionless and almost exactly equal to 1/137. (Why 137 ...
Terms matched: 1 - Score: 24 - 15 May 2017 - URL: /sf121/sf121p03.htm
... Science Frontiers ONLINE No. 122: Mar-Apr 1999 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Now We Know Why!Circa 1950, physicist E. Fermi observed that our galaxy measures about 100,000 light years across, and that a spacefaring race could cross it in only 100 million years, even if their starships poked along at only 1/1 ,000 the speed of light. Since our galaxy is about 10 billion years old, the very reasonable question is: If other intelligences (ETs) exist in our galaxy, why haven't they found us by now? Actually, many ETs from many different cultures should be stopping by frequently. J. Annis, an astrophysicist at Fermilab, believes he can explain the apparent dearth of ETs. The problem is gamma-ray bursts (GRBs). They are so powerful that they sterilize those galaxies in which they occur. Presently, GRBs occur in each galaxy about once every 100 million years, but theory suggests that they were much more frequent in the past. As a consequence, by the time intelligent life evolves anywhere and figures out how to build spaceships, they are zapped by a GRB. Perhaps some do begin exploration of their galaxy, but they don't get very far. (Matthews, Robert; "Sorry, We'll Be Late," New Scientist, p. 16, January 23, 1999.) Comment. Any reader of science fiction can come up with other explanations: (1 ) ETs have been ...
Terms matched: 1 - Score: 24 - 15 May 2017 - URL: /sf122/sf122p17.htm
... Basically, it asserts that in some -- possibly many -- mutations, a useful response to an evolutionary challenge is "naturally" accompanied by useful responses to challenges that have not yet been posed to the life form in question. This prescience verges on the miraculous to the uninitiated, but mainstream biologists seem content to write the phenomenon off as merely good fortune -- like hitting two jackpots in a row on the same slot machine. A good example of preadaptation occurs when bacteria are cultured in the presence of an antibiotic. Within a few weeks, they have evolved a resistance to that particular antibiotic. This well-known phenomenon is easily explained by evolution. However, often the newly evolved (or "adapted") bacteria are also resistant to several other antibiotics that work by different mechanisms. All of the multiple gene changes needed for the several different defense mechanisms are controlled by a single site on the same chromosome. (Levy, Stuart B.; The Antibiotic Paradox , New York, 1992, p. 99. Cr. A. Mebane.) Comments. How can bacteria prepare defenses against antibiotics they have not been exposed to? Luck, prescience, or some unrecognized mechanism? In his Ever Since Darwin , S.J . Gould acknowledges that "preadaptation implies prescience although in actuality it means just the opposite! His explanation of "preadaptation is not easy to grasp. "In short, the principle of preadaptation simply asserts that a structure can change its function radically without altering its form as much. We can bridge the limbo of intermediate stages by ...
Terms matched: 1 - Score: 24 - 15 May 2017 - URL: /sf124/sf124p06.htm
... Sourcebook Subjects How can the moon affect the earth's temperature?Several weather phenomena, such as precipitation and thunderstorm frequency, have been linked to the phase of the moon. Now, it seems that the moon's "cold" emanations can also raise the earth's temperature. Explaining how the moon's phase can have any warming effect at all on the earth's atmosphere is difficult, because the infrared energy received from the moon is only 10-5 that in sunlight. Nevertheless, a slight but statistically significant temperature effect does exist. In one study, the microwave emission of molecular oxygen was measured by a polar-orbit satellite. These data gave meteorologists the temperatures of the lowest 6 kilometers of the atmosphere from all areas of the planet. The temperature difference between full moon and new moon was only 0.02 C, with the full-moon temperature being the higher. (Ref. 1) A second study took actual surface temperatures measured at noon GMT each day at 51,200 locations around the world. These near-surface temperatures revealed a difference of 0.2 C between full and new moons -- ten times larger than that from the satellite study. (Ref. 2) 0.2 C and even 0.02 C are much too large to be attributed to direct lunar "heating." Instead, geophysicists wonder if the moon's orbit modulates the influx of meteoric dust which may affect solar heating of the earth by absorption. References Ref. 1. Balling, Robert C., Jr. ...
Terms matched: 1 - Score: 24 - 15 May 2017 - URL: /sf100/sf100g11.htm
... 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 Dragon fish see red Most fish that make a living in deep, dark ocean waters have eyes that are most sensitive to the blue part of the sun's rays (470-490 nanometers). These are the rays that penetrate to the greatest depths in the sea. This adaptation to blue light means that deepsea fish have evolved visual pigments different from those of surface fish and land animals. Visual pigments are complex chemical compounds, and one must suppose that many, many random mutations took place before deepsea fish were able to manufacture visual pigments different from their relatives living near the surface. (Or did deepsea fish come first?) But there is more to this story. Many dwellers in the black abysses generate their own light. They sport bioluminescent organs so they can be seen by others of their own species and, in addition, illuminate prey for easier capture. In another remarkable example of evolutionary convergence, these bioluminescent organs emit light spectrally matching the eye sensitivity of deepsea fish! So far, though, this story is not any more amazing that many others woven into evolution's fabric. But suppose that a deviant species of deepsea fish upset this cosy status quo by evolving visual pigment and bioluminescent organs operating in a part of the electromagnetic spectrum that other deepsea fish could not perceive. It would be as if this species had radar but the others did not! Well, three genera of dragon fish do ...
Terms matched: 1 - Score: 24 - 15 May 2017 - URL: /sf101/sf101b06.htm
... Science Frontiers ONLINE No. 46: Jul-Aug 1986 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Are fruit bats primates?The profound differences between the fruit bat (megabats) and echo-locating, insect-eating bats (microbats) were mentioned above. The primate-like eye-brain system of the fruit bats suggests two possibilities: 1. Primitive bats first developed flight and then the fruit bats developed their primate-like eye-brain systems through "convergent evolution"; or 2. The fruit bats inherited their eye-brain system from closely re lated primates and then developed flight through "convergent evolu tion." R.D . Martin, a physical anthropologist and author of this article, has reviewed the morphological characteristics of the fruit bats and primates. On this basis, he doubts that the fruit bats are pri-mates. Furthermore, molecular studies are also negative. Therefore, possibility #1 above is the more likely one. (Martin, R.D .; "Are Fruit Bats Primates?" Nature, 320:482, 1986.) Comment. In either case, #1 or #2 , we must acknowledge convergent evolution and the likelihood that some subroutine in the genetic code repeats itself in divergent species. Speculative as always, we must ask if the genetic instructions for human or even superhuman intelligence do not reside dormant-for-now in other species. Reference. For more on megabat similarities to primates, go to BMC4 in the catalog volume: Biological Anomalies: ...
Terms matched: 1 - Score: 17 - 15 May 2017 - URL: /sf046/sf046p09.htm
... Science Frontiers ONLINE No. 15: Spring 1981 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Novaya Zemlya Effect Rarely, as the long polar night draws to a close, the sun will suddenly burst above the horizon weeks ahead of schedule. This is the Novaya Zemiya Effect, and it is basically a polar mirage. Even when the sun is still 5 below the horizon, its light can become trapped between thermoclines and be transmitted over the usual horizon. The atmospheric ducts act much like flat light pipes. In the Novalya Zemlya Effect the sun's image is grossly distorted, quite different from the high quality mirages sometimes seen over hundreds of miles in the polar latitudes. (Anonymous; "New Light on Novaya Zemlya Polar Mirage," Physics Today, 34: 21, January 1981.) Reference. Related atmospheric phenomena are collected in Section GEM in our Catalog: Rare Halos. More information on this book here . Triple Novaya Zemlya Effect. Three distorted images of a sun still well below the horizon. From Science Frontiers #15, Spring 1981 . 1981-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf015/sf015p12.htm
... were allowed to explore the meadows making up the construction site. L. Therkorn, an archeologist from the University of Amsterdam, led the exploration team. The digs yielded artifacts going as far back as 300 AD, when this region was sparsely populated by farmers. However, if Therkorn et al had dug up only these old bones and pottery shards, we would not be writing this for SF! For anomalists, it was the pits -- old pits that had been filled in and that seemed to be arranged in an intricate pattern that mirrored the star constellations making up the classical Greek zodiac. But this revelation didn't come until later. After all, pits are common in archeology. Often they contain just rubbish, sometimes human remains. "But the pits at Muggenburg are different. There are 57 of them, each about a meter wide and deep, extending over about half a hectare [about 1 acres] They were certainly not used for storage because the level of the groundwater is too high. Nor were they used as dumps; archaeological evidence shows that they were filled in shortly after they were dug, and some have very little in them." It was only when Therkorn mapped the pits did she see that they were not distributed at random. Connecting them as children do with dot-puzzles, she quickly recognized the constellations Taurus (bull), Canis Major (dog), Pegasus (winged horse), and Hercules. The pits were geoglyphs of a new sort, streching for more than 100 meters, sort of Nazca lines in Holland ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf104/sf104p00.htm
... Science Frontiers ONLINE No. 16: Summer 1981 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Earth-moon fission: a slight hint Although the Sm/Nd isotope ratios of the earth and the chondrites (a type of meteorite) seem pretty close in value, the possibility of a slight but significant discrepancy remains. If this small difference is confirmed, it would strongly imply that the earth's Sm/Nd ratio was shifted after the planet's formation. The most reasonable event that could shift this ratio is an long-debated earth-moon fission, wherein the earth's lighter surface material was somehow torn off to form the moon. (DePaolo, Donald J.; "Nd Isotopic Studies: Some New Perspectives on Earth Structure and Evolution," Eos, 62:139, 1981.) Comment. The moon's density is markedly less than the earth's , so the idea is not as wild as it seems. The hypothetical fission of Earth-Moon could have shifted the Nd isotope ratio in relation to that of the chondrites. From Science Frontiers #16, Summer 1981 . 1981-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf016/sf016p05.htm
... Science Frontiers ONLINE No. 17: Fall 1981 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Were the British Megaliths Built As Scientific Instruments? Astronomy Mysteries Around Uranus Saturn is Still Cooking Away Biology Was There Really A Big Bang? What Was, Is, and Shall Be Why Conserve Junk? Geology Submarine Canyons: A 50-year Perspective Shergottites and Nakhlites: Young and Mysterious Too Many Pages Missing Geophysics The Gravitational "constant" is Not! Bioluminescent Cartwheels and Whirlpools in the Arabian Sea Solar Cosmic Rays Stimulate Thunderstorms Psychology How NDEs Differ From OBEs ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf017/index.htm
... Science Frontiers ONLINE No. 18: Nov-Dec 1981 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Giant Thunderstorm Clusters Conventional wisdom has it that thunderstorms are small-scale phenomena 50100 miles across. However, J.M . Fritsch and R.A . Maddox of NOAA have announced that satellite photos show a radically different situation. The more violent thundersotrms are often organized into roughly circular clusters that may span 1000 miles. Previously, all thunderstorms were considered local convective storms that were regulated by upper air patterns. This view must now be changed because the newly recognized giant thunderstorm clusters actually modify planetary upper air flow. (Bardwell, Steven; "Satellite Data Show New Class of Thunderstorms," Fusion Magazine, p. 50, September 1981.) Comment. In SF#17, cosmic rays were shown to contribute to thunderstorm generation. Now it seems that cosmic rays may affect weather on a planetary scale. From Science Frontiers #18, NOV-DEC 1981 . 1981-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf018/sf018p11.htm
... Science Frontiers ONLINE No. 61: Jan-Feb 1989 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A Mammoth Fraud In Science The Holly Oak pendant, shown in the accompanying sketch, reveals a mammoth incised on a piece of seashell. Said to have been discovered in 1864 at a Delaware archeological site, it has been employed to "prove" two different theories: That humans were in North America as the Ice Ages waned and when mammoths still roamed the continent; and The the mammoth survived in North America well into the Christian era. In an article in American Antiquity, J.B . Griffin et al marshall considerable evidence implying that the Holly Oak pendant is a fraud. Much of this contrary evidence seems weak: The discoverer of the pendant, H.Y . Cresson, was not highly regarded in American archeological circles of the time; The pendant was not taken seriously by other archeologists; The drawing of the mammoth "looks like" it was copied from an accepted European engraved tusk; and The shell from which the Holly Oak pendant was made "looks like" shells found in other archeological sites with more recent dates; and so on. The only "hard" evidence that the pendant is a fake comes from radiocarbon dating, which suggests that the shell is only 1530 110 years old. The authors state that since mammoths positively did not survive that recently, the pendant must be a fraud. Griffin et al thus dump the Holly Oak oendant into the archeological wastebasket of "proven" frauds. This ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf061/sf061a02.htm
... Science Frontiers ONLINE No. 22: Jul-Aug 1982 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects How can the sun influence chemical reaction rates?When water is added to bismuth trichloride, a precipitate, bismuth oxychloride, forms. The precipitation rate seems to vary with time, being different from one month to the next. This time variation has been confirmed at many laboratories around the world and is not dependent on any obvious meteorological condition. Instead, some investigators claim to have found a rather good correlation with the sunspot cycle! (Majorino, Gianfranco, and Zecca, Luigi; "Period Analysis of the Picardi P-Test," Cycles, 33:78, 1982.) Comment. This precipitation test, called the Piccardi P-Test, has been offered for years by cycle students as proof of extraterrestrial influences on earthly chemistry, including biochemistry. No explanation has been suggested; and one reads about it only in "fringe" publications. From Science Frontiers #22, JUL-AUG 1982 . 1982-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf022/sf022p13.htm
... Science Frontiers ONLINE No. 23: Sep-Oct 1982 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Short-circuiting heredity Genes, those carriers of heredity, have turned out to be great gadabouts. Not only do they jump about within a species, but also between species, especially the simple prokaryotic organisms, such as bacteria. It is now well accepted that genes flow between different species of bacteria in physical contact, thus stirring the evolutionary pot. Until recently, scientists believed that the higher organisms, the eukaryotic species, including you and me, did not indulge in such "horizontal" traffic between species. But a few cases have now been found, one involving humans and a microorganism associated with tumors. And the search is just beginning, as biologists look for something they never thought of looking for before. (Lewin, Roger; "Can Genes Jump between Eukaryotic Species?" Science, 217:42, 1982.) Comment. This apparent short-circuiting of classical heredity channels supports the radical notion that evolutionary blueprints may be transmitted between divergent species. In the long view, may-be we should not malign viruses, germs, and biting insects! From Science Frontiers #23, SEP-OCT 1982 . 1982-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf023/sf023p06.htm
... 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 Artificial molecule shows 'sign of life'A synthetic molecule has been found that apparently replicates itself. This seems to be a step on the road to artificial life. "Julius Rebek, Tjama Tjivikua and Pablo Ballester of the Massachusetts Institute of Technology say that their compound, an amino adenosine triacid ester (AATE), acts as a "template" which combines molecular fragments to make a copy of the original compound. This process is very similar to that used by DNA. The difference is that the biological copying usually needs an enzyme to make it work." (Emsley, John; "Artificial Molecule Shows 'Sign of Life,'" New Scientist, p. 38, April 28, 1990.) Comment. No one can say that replication is a "spontaneous" property of inorganic matter. It is truly remarkable that base matter is intrinsically self-organizing and replicating. We know! It is all because the universe just happens to be anthropic. From Science Frontiers #70, JUL-AUG 1990 . 1990-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf070/sf070b10.htm
... Science Frontiers ONLINE No. 30: Nov-Dec 1983 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Arctic Womb "Magnetostratigraphic correlation of Eureka Sound Formation in the Canadian High Arctic reveals profound difference between the time of appearance of fossil land plants and vertebrates in the Arctic and in mid-northern latitudes. Latest Cretaceous plant fossils in the Arctic predate mid-latitude occurrences by as much as 18 million years, while typical Eocene vertebrate fossils appear some 2 to 4 million years early." (Hickey, Leo J., et al; "Arctic Terrestrial Biota: Paleomagnetic Evidence of Age Disparity with Mid-Northern Latitudes During the Late Cretaceous and Early Tertiary," Science, 221:1153, 1983.) Comment. The anomaly here is in the vision of the high Arctic lands basking in the warm sun busily evolving new life forms well in advance of their appearance in lands closer to the Equator. What happened to the earth's axial tilt. These fecund polar territories should have been engulfed in darkness almost half of the year -- hardly an environment for precocious plant evolution. Further, trees found buried in the Arc-tic muck could never have grown where found due to the long polar darkness. From Science Frontiers #30, NOV-DEC 1983 . 1983-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf030/sf030p09.htm
... Science Frontiers ONLINE No. 31: Jan-Feb 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Cancer Even More Insidious A recent advance in cancer research has been the discovery that the development of some cancers is initiated by oncogenes -- genes which have been "switched on" by biological or environmental forces. That humans and other organisms harbor such Trojan Horses is unsettling enough, but it now seems that the development of cancer may require the stepwise cooperation of several different oncogenes. In other words, one oncogene controls the action of another and so on in cascade until the cancer is finally initiated. (Marx, Jean L.; "Cooperation between Oncogenes," Science, 222:602, 1983.) Comment. How and why would such a complex mechanism, without obvious short-term survival value, ever have developed? See "Cancer: The Price for Higher Life," in SF#30. Reference. More on the insidiousness of cancer and related anomalies, see BHH2335 in our Catalog: Biological Anomalies: Humans II. To order, visit: here . From Science Frontiers #31, JAN-FEB 1984 . 1984-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf031/sf031p07.htm
... Science Frontiers ONLINE No. 31: Jan-Feb 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Ri Seen In June 1983, a three-man team travelled to New Ireland, off the coast of New Guinea, to track down the ri, an unrecognized aquatic mammal with some mermaid overtones. The natives of New Ire-land kill and eat the ri, which they insist is different from the dugong. The team was fortunate to observe a ri from as close as 50 feet as it hunted fish in Elizabeth Bay. The animals was 5-7 feet long, skinny and fast. No dorsal fin was seen, and the tail flukes were mammilian (i .e ., horizontal). The creature surfaced about every 10 minutes. Such behavior is quite unlike that of known cetaceans and sirenians. (Anonymous; "New Guinea Expedition Observes Ri," ISC Newsletter, 2:1 , Summer 1983.) (ISC is the International Society of Cryptozoology.) From Science Frontiers #31, JAN-FEB 1984 . 1984-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf031/sf031p09.htm
... 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 Terranes Continue To Pile Up More and more the continents seem to be pastiches of rocks from far corners of the earth plastered one atop the other. Specialists in this new field have recognized more than 300 different terranes around the margins of the Pacific. In keeping with this spirit, this article quotes a perceptive Old Geologist's Saying: "I wouldn't have seen it if I hadn't believed it." (Kerr, Richard A.; "Suspect Terranes and Continental Growth," Science, 222: 36, 1983.) From Science Frontiers #32, MAR-APR 1984 . 1984-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf032/sf032p10.htm
... 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 Nature Communicates In Mysterious Ways Most of us will recall that the wings of butterflies and moths sometimes display eyespots, which, according to current thinking, are designed to startle potential predators. Perhaps so, but butterfly and moth wings can convey a wide range of "signals." K.B . Sandved, a nature photographer, has also found remarkable renditions of all the letters in the English alphabet (one at a time, of course) on the wings of these insects. In fact, he has accomplished this several times over using different species. He has found all the Arabic numerals, too, as well as ampersands, question marks -- you name it! Although Greek pi and capital omega have turned up, butterflies and maths are clearly trying to impress people who utilize the Roman alphabet. After all, it is difficult enough to evolve an ampersand; generating Chinese characters would strain credulity too much. (Amato, Ivan; "Insect Inscriptions," Science News, 137: 376, 1990.) Comments. Incidentally, of what survival value are these wing symbols? Obviously, the butterflies and moths have not got their act completely together as yet. Words and phrases will come soon, we are certain. Look at the eggplants for example. They have specialized in Arabic. It has recently been reported in British newspapers and on BBC Radio 4 that when the Kassam family sliced up an eggplant, ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf071/sf071b08.htm
... 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 High g-values in mines Measurements of G, the constant in Newton's Law of Gravitation, made in mines are always significantly higher than those made in surface laboratories. No one is quite sure why. It has been suggested that a lack of knowledge of the densities of surrounding rocks might account for this discrepancy. But Holding and Tuck report new measurements in Australian mines, where the densities are very well known. The G values are still high. Mine measurements of G differ in the fact that the masses employed can be much farther apart. (Holding, S.C ., and Tuck, G.J .; "A New Mind Determination of the Newtonian Gravitational Constant," Nature, 307:714, 1984.) From Science Frontiers #33, MAY-JUN 1984 . 1984-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf033/sf033p23.htm
... Science Frontiers ONLINE No. 35: Sep-Oct 1984 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Ancient Egyptians in Hawaii Sinister Development in Ancient Greece Man the Scavenger A Different Way of Looking At the Universe Astronomy A Quick Quasar Monster Star Lurks Nearby Halley's Comet is Winking At Us Galactic Radiation Belt? Biology Dolphins to the Rescue -- again! Gravity and Going Around in Ellipses Getting the Pouch Right Are Bluebloods More Often Type A? Mind Before Life Caenorhabditis Elegans The Chinese Wild Man Geology An Extraordinary Peat Formation Confusing Seismic Data From the Deep Continental Crust Geophysics Infrared Atmospheric Waves Burning Mass Falls in B.C . Psychology The Immune System As A Sensory Organ Parapsychology: A Lack-of-progress Report Chemistry & Physics Blooms in the Desert? ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf035/index.htm
... Science Frontiers ONLINE No. 35: Sep-Oct 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Gravity And Going Around In Ellipses We thought that our readers might like to know that the force of gravity apparently has no significant effect on circumnutation. Now circumnutation is the result of an "impressively ubiquitous mechanism" in all elongating plant organs. More simply, it is the elliptical weaving motion seen in the tips of growing leaves, shoots, flower stalks, branch roots, etc. In a 4- to 5-day-old sunflower seedling, the ellipse traced is 6-8 millimeters long and takes about 110 minutes. The ellipses result from differ-ential growth in the elongating plants. No one knew whether the force of gravity played a role in circumnutation until some sunflower seedlings were flown on Spacelab 1. Zero-g did not affect circumnutation at all. (Brown, Allan H. and Chapman, David K.; "Circumnutation Observed without Significant Gravitational Force in Spaceflight," Science, 225:230, 1984.) Comment. Nature seldom indulges in frivolous actions, but we just may have a phenomenon here that has absolutely no deeper significance. From Science Frontiers #35, SEP-OCT 1984 . 1984-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf035/sf035p10.htm
... Science Frontiers ONLINE No. 77: Sep-Oct 1991 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Mercury: the impossible planet Mercury, largely hidden in the sun's glare, also conceals beneath its baked, cratered surface: (1 ) far more iron than solar-system theory allows; and (perhaps) (2 ) a dynamo that should not exist. Let us take the excess-iron problem first. Mercury's density is 5.44 (compared to earth's 5.52), so that it very likely contains much iron. Our moon, which resembles Mercury in size and external appearance, only has a density of 3.34, implying an altogether different origin. In the currently accepted theory of solar-system formation, all of the planets and their satellites condensed from a primordial disk of dust sur rounding the just-formed sun. The planets closer to the solar inferno lost more of their easily vaporized constituents due to the sun's heat. The cooler, outer planets were able to retain large amounts of ices. In this scenario, we would expect Mercury to be rich in iron and rocks. This seems to be the case, but it has too iron to fit the theory. Astronomers have tried to save the theory by supposing that a large asteroid sideswiped Mercury tearing off part of its outer layer of lighter rocks, leaving the heavier iron core untouched. The theory doesn't say what happened to the debris from this colossal collision. As for Mercury ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf077/sf077a03.htm
... . 66: Nov-Dec 1989 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Globular Clusters Upset Theory Of Galaxy Formation A spherical cloud of globular clusters surrounds the Milky Way galaxy. Each cluster is itself a spherical groups of stars. Through the telescope, globular clusters are beautiful spherical aggregations of bright stars that seem to get ever denser toward the cluster's center. Globular clusters harbor many anomalies (AOB4 and AOB17 in Stars, Galaxies, Cosmos); here, we mention two involving spatial distribution and age. Many spiral galaxies, like our own Milky Way, spin ponderously in the center of a spherical cloud of scores, even hundreds, of globular clusters (see sketch). Not only do the globular clusters surrounding us display a different spatial distribution (spherical rather than flat-spiral), but their individual ages undercut galaxy theory. All of the Milky Way's globular clusters were supposed to have been formed when our galaxy was created. Yet, the ages of these clusters vary by as much as 5 billion years. (Dayton, Leigh; "Globular Clusters Upset Theory of Galaxy," New Scientist, p. 34, May 13, 1989.) Comment. We cannot resist mentioning still another cluster anomaly: The globular clusters do not participate in the galaxy's general rotation. Where did these oddballs come from? Reference. The catalog volume: Stars, Galaxies, Cosmos, mentioned above, is described here . From Science Frontiers #66, NOV-DEC 1989 . 1989-2000 William ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf066/sf066a03.htm
... 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 Continental graveyard?The seismic waves generated by earthquakes penetrate deeply into our planet and allow geophysicists to, in effect, X-ray the earth. In addition to the hypothesized solid inner core, the fluid outer core, and the encapsulating solid mantle, there seems to be continentsized inhomogeneities in the vicinity of the mantle and the outer core. The anomalous seismic signals can be interpreted as huge blocks of different composition and/or temperature. T.H . Jordan, from MIT, ventures: ". .. that what they have mapped are 'continents' on the core-mantle boundary. 'What we've seen is something really incredible,' he says. According to Jordan, the anomalies are analogous to continents on the surface of the earth, because they can't be accounted for by temperature variations but must reflect some compositional change as well. These features 'represent the scum or slag that sits up on the outer core boundary, just as continents sit on the outer surface of the earth,' he says." Some have even speculated that these subterranean chunks of debris are pieces of surface continents that were subducted at the plate boundaries long ago. There are, after all, missing pieces in the continental drift jigsaw puzzle. There might even be substantial chunks of asteroids and comets down there waiting, like the Titanic, to be explored by scientific instruments. Can once-subducted continents and ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf047/sf047p14.htm
... Science Frontiers ONLINE No. 51: May-Jun 1987 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A Larger Sun During The Maunder Minimum Europe's so-called "Little Ice Age" (1645-1715) coincided with the Maunder Minimum -- a period during which sunspots were exceedingly rare. How was the sun different during the Maunder Minimum? This subject of solar variability (in both diameter and period of rotation) has been long debated. Some early measurements of solar diameter, begun at Greenwich in 1830, seemed to some to show a steadily shrinking sun, but others found cyclic patterns. E. Ribes et al have just presented some data on solar diameter actually taken during the Maunder Minimum. "By analysing a unique 53-year record of regular observations of the solar diameter and sunspot positions during the seventeenth century, we have shown for the first time that the angular diameter was larger and rotation slower during the Maunder Minimum." A larger sun might be cooler, providing less heat, thus accounting for climate changes. (Ribes, E., et al; "Evidence for a Larger Sun with a Slower Rotation during the Seventeenth Century," Nature, 326: 52, 1987.) Comment. Just why the sun expands and contracts over a period measured in hundreds of years is a major astro physical conundrum. Variation in solar diameter, 1860-1940. Arrows indicate sunspot maxima. (From ASO-X6 in The Sun and Solar System Debris). From Science Frontiers #51 ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf051/sf051a05.htm
... Science Frontiers ONLINE No. 67: Jan-Feb 1990 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Continuity At The Conrad Discontinuity From the study of seismic waves, geophysicists have determined that between 7.5 and 8.6 kilometers below the surface there exists a clear-cut "discontinuity." Practically speaking, this means that above this layer seismic waves travel at a markedly different velocity than they do below it. This discontinuity is so widespread, occurring beneath all of the continents, that it has received a special name: the Conrad Discontinuity. Ordinarily, a geophysicist would expect to find a significant change in rock type when drilling through such a strong discontinuity. It was widely expected that, at the Conrad Discontinuity, drillers would find the granitic rocks typical of the continents changing suddenly into basalt, which is thought to make up the lower reaches of the earth's crust. However, when Soviet drills pierced the Conrad Discontinuity below the Kola Peninsula, they found no such switchover to basalt at all. In fact, they hadn't even found it when they penetrated to 12 kilometers. This was a shocker. Now, no one knows what the Conrad Discontinuity represents. It doesn't signal a change in rock type; neither is there a fault or boundary of any kind. It is important to find out what is wrong here, because much of modeling of the unseen structure of the earth's crust depends upon a realistic interpretation of seismic records. (Monastersky, Richard; "Inner Space ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf067/sf067g14.htm
... Science Frontiers ONLINE No. 83: Sep-Oct 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Earth's water not imported?That the earth is continuously bombarded by icy minicomets is unpopular in the Court of Science. Even less acceptable is the notion that over the eons these house-sized chunks of ice contributed substantially to our planet's inventory of water. In what will surely be hailed as the death knell of the icy comet theory is the discovery by K. Muehlenbachs, of the University of Alberta, and F. Robert and M Javoy, from the University of Paris, that the water contained in the earth's rocks, both ancient and recent, is isotopically different from the water found in meteorites. Meteoric water is assumed to be isotopically the same as cometary water. Conclusion: comets could not have contributed substantially to our planet's water inventory in the geological past. (Anonymous; "Earth's Water Did Not Come from Comets," New Scientist, p. 19, June 20, 1992.) Comment. Of course, the isotpic measurements have to be weighed against all the data supporting the icy comet theory Icy comets could, after all, be a recent phenomenon. Also, no one has ever actually analyzed a piece of cometary ice; it is simply assumed that it would be similar to meteoric water. From Science Frontiers #83, SEP-OCT 1992 . 1992-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf083/sf083g09.htm
... Science Frontiers ONLINE No. 88: Jul-Aug 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Seashore Seiches At many spots around the world, sealevel rises and falls with periods of only a few minutes -- much shorter than the common semidiurnal tides and much longer than wind-generated waves. These oscillations of the water surface are termed "seiches." Two fundamentally different kinds of seiches have been noted in the recent literature. The first variety is transitory and can be set into motion by weather disturbances and earthquakes. The second is permanent and a bit more mysterious. Let's take transitory seiches first September 17, 1992. Anglesey, England. At about 0700 in the morning: "I was on the beach at Trearddur on western Anglesey, when an acquaintance drove down the beach towing a fishing boat. He launched the boat in about six inches of water and we then engaged in conversation for a couple of minutes. Turning to the boat, we were amazed to find that it was high and dry about 20 metres from the water's edge. Small flatfish, mainly immature brill, could be seen stranded and flapping in the wet sand. About a minute later, the sea started to return and quickly rose up the beach beyond where the boat had originally been launched. An hour later, the oscillation in sea level was still taking place. I determined that the period was just over three minutes and the amplitude just under one metre, the latter measured with reference to a half-submerged ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf088/sf088g13.htm
... new and startling facts about the inner earth are emerging from current magnetic, seismic, and gravitic researth that a little list is in order. Bear in mind when going down the list that most of these features would have been considered absurd only a decade or two ago. The earth's solid inner core, which "floats" inside the liquid core, is not spherical. Rather, it is anisotropic with its axis of symmetry aligned with the earth's axis of rotation. (Ref. 1 below) "The CMB (core-mantle boundary) is the most dramatic discontinuity in the earth's internal structure in terms of the physical and chemical properties as well as the time scale of the processes that take place on either side of it. Its shape, if different from that predicted by the hydrostatic equilibrium theory, may contain information important to our understanding of geodynamic processes in the mantle or the geomagnetic field generated in the outer core." (Ref. 1, and also item #7 below) The earth's magnetic field possesses four lobes which remain fixed relative to the earth's surface, as demonstrated by 300 years of data. These lobes do not drift westward like the general field. (Ref. 2) "Core-spot pairs" of magnetic intensity seem to move westward and poleward. In the southern hemisphere, they originate under the Indian Ocean and drift under South Africa into the southern Atlantic. This motion reminds one of sunspot motion, except that sun-spots move equatorward. There may be a connection here. ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf052/sf052g14.htm
... Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Early Life Surprisingly Diverse The three life forms sketched below are tiny microorganisms, not the worms they appear to be. They are thought to be bacteria, for they closely resemble modern cyanobacteria. What is most important about these fossilized micro-organisms is that they were found in the Apex chert of Western Australia. The Apex chert is designated Early Archean and assigned an age of 3.465 billion years [Four significant figures!]. It is rare to find any fossils at all in rocks this old, but apparently the Apex chert escaped most of the fossil-destroying metamorphism afflicting most Precambrian formations. Even more remarkable is the diversity of these suspected bacteria. J.W . Schopf reports finding no less than eleven different kinds so far--and our planet was only a few hundred million years old at the time the Apex chert was formed. Schopf's discoveries generate at least three questions: How could life have originated and diversified to such an extent in just a few hundred millions years? Why after such rapid diversification did these microorganisms remain essentially unchanged for the next 3.465 billion years? Such stasis, common in biology, is puzzling. If these microorganisms are really cyanobacteria, they would have released oxygen to the atmosphere. Is the standard assumption that the earth's atmosphere lacked oxygen until 2.2 billion years ago correct? (Schopf, J. William; "Microfossils of the Early Archean Apex Chert: New Evidence of the Antiquity of Life," Science, 260 ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf088/sf088b10.htm
... levels! Well, the dozen or so other theories that have been advanced to account for whale strandings haven't been much better. M. Klinowska thinks that she has some clues indicating a better theory. First, all whale strandings (in Britain, at least) occur where magnetic field contours are perpendicular to the shoreline. Second, strandings are also correlated with irregular changes in the magnetic field. You will see the significance of these facts after you hear her theory. "Cetaceans use the total geomagnetic field of the Earth as a map. A timer, also based on this field, allows them to monitor their position and progress on the map. They are not using the directional information of the Earth's field, as we do with our compasses, but small relative differences in the total local field. I arrived at this explanation after a detailed analysis of the records of strandings in Britain, but it has so far been confirmed by two groups working in the U.S . Similar work is in progress in other parts of the world. "The total magnetic field of the Earth is not uniform. It is distorted by the underlying geology, forming a topography of magnetic 'hills and valleys.' My analysis shows that the animals move along the contours of these magnetic slopes, and that in certain circumstances this can lead them to strand themselves. In the oceans, sea-floor spreading has produced a set of almost parallel hills and valleys. Whales could use these as undersea motorways, but might swim into problems when they came near the shore ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf053/sf053b09.htm
... Science Frontiers ONLINE No. 49: Jan-Feb 1987 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Prebiological chemistry in titan's atmosphere From the abstract of the referenced paper: "An organic heteropolymer (Titan tholin) was produced by continuous dc discharge through a 0.9 N2 / 0.1 CH4 gas mixture at 0.2 mbar pressure, roughly simulating the cloudtop atmosphere of Titan [one of Saturn's moons]. Treatment of this tholin with 6N HCl yielded 16 amino acids by gas chromatography after derivatization to N-trifluroacetyl isopropyl esters on two different capillary columns...The presence of 'nonbiological' amino acids, the absence of serine, and the fact that the amino acids are racemic within experimental error together indicate that these molecules are not due to microbiol or other contamination, but are derived from the tholin...These results suggest that episodes of liquid water in the past or future of Titan might lead to major further steps in the probiological organic chemistry on that body." (Khare, Bishun N., et al; "Amino Acids Derived from Titan Tholins," Icarus, 68:176, 1986.) From Science Frontiers #49, JAN-FEB 1987 . 1987-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf049/sf049p09.htm
... ONLINE No. 44: Mar-Apr 1986 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Neptune's partial rings Neptune's rings cannot be seen directly. Instead, earth-based astronomers watch for occultations or dimmings of stars as they pass behind the rings. This seems straightforward enough in theory, but the occultations have been perplexing in practice. First, one member of a closely spaced double star will be occulted normally by the rings but its companion won't . Second, some terrestrial observatories will record an occultation but another a few thousand miles away will not. Such experiences have led to the hypothesis that the rings are discontinuous; that is, they are arcs rather than complete rings. Why should Neptune's rings be different from those of the other major planets? On speculation maintains that the arcs are the consequence of one or more recently satellites. Another hypothesis, by J.J . Lissauer, has the arcs gravitationally shaped and maintained by two moons, one of the shepherd type (as with Saturn's rings), the other at a Lagrangian point in the arc's orbit. (Kerr, Richard A.; "Neptune's Ring Arcs Confirmed," Science, 230:1150, 1985. Also: Lissauer, Jack J.; "Shepherding Model for Neptune's Arc Ring," Nature, 318:544, 1985.) Comment. The theories employing "shepherd" moons to gravitationally mold and maintain planetary rings have been weakened by the apparent absence of such ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf044/sf044p03.htm
... Science Frontiers ONLINE No. 55: Jan-Feb 1988 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Curious sand-filled cavities in the great pyramid "Japanese and French experts are investigating a new mystery at the 4,000-year-old pyramids -- why the pharaohs built geometrical cavities inside the Great Pyramid of Cheops and filled them with mineral-enriched sifted sand. .. .. . "From the outside, the pyramid appears to be built of solid blocks of limestone. But two French architects, Gilles Dormion and Jean Patrice Goidin, discovered cavities which could total 15 to 20 per cent of the structure. .. .. . "The French team used an instrument which measures differences in gravity to find the internal spaces. They then drilled small holes through the 1.0 -metre blocks and found sand -- but not ordinary sand from the nearby desert. "Laboratory tests showed it came from another part of Egypt and was sifted and enriched with minerals before being placed inside the pyramid by the ancient architects." (Fouad, Ashraf; Vancouver Sun, March 7, 1987. Cr. G. Conway via L. Farish.) The French results were subsequently confirmed by a Japanese team. (Buccianti, Alexandre; "Des Scientifiques Japonais Confirment les Traveaux de la Mission Francaise,: Le Monde, p. 18, February 4, 1987. Cr. C. Mauge.) From Science Frontiers #55, JAN-FEB 1988 . 1988-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf055/sf055p02.htm
... Science Frontiers ONLINE No. 108: Nov-Dec 1996 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Are We Really Robots?We imagine ourselves to be different from inorganic nature -- flesh and blood -- certainly not hardware. But the real truth may lie beyond our ken. But can we really prove that we are not machines? G. Johnson has a few words to say on this subject in his book Fire in the Mind: Science, Faith, and the Search for Order. "Thinking in terms of bits has allowed us to develop the field of computer science, in which we learn how to represent the world with patterns of information. So successful are our endeavors that some physicists and computer scientists believe that perhaps information is not a human invention but something as real, as physical, as matter and energy. And now a handful of researchers have come to believe that information may be the most real of all. Simulated creatures would have no way of knowing they are simulations, the argument goes. And, for that matter, how do we know that we are not simulations ourselves, running on a computer in some other universe? "Nature, it seems, has honed us into informavores so voracious that some can persuade themselves that there is nothing but information." (As quoted in: Science, 273:443, 1996) Comment. If we really are simulations, that "computer in some other universe" has taken great pains to also simulate millions of other species and their fossil ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf108/sf108p00.htm
... 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 Growth Spurts In Children Daily length measurements (in centimeters) versus age (in years) for a male infant showing growth spurts. Despite much anecdotal evidence and the convictions of many parents, biologists have not generally recognized the reality of short, sharp growth spurts on the order of 1 centimeter in a single 24hour period. Rather, the consensus has been that child growth was divided into three stages (infancy, childhood, adolescence), each characterized by different, but steady rates of growth. This conclusion was based upon annual and quarterly length measurements. However, when children are measured more often (weekly or daily), the growth curve is seen to be step-like rather than smooth, as in the accompanying illustration. Indeed, the mean amplitude of the growth spurts was found to be about 1 centimeter; and the duration of the spurts, about one day. These spurts punctuated long intervals of no growth. In infants, for example, 90-95% of their development is growth-free! (Lampl, M., et al; "Saltation and Stasis: A Model of Human Growth," Science, 258:801, 1992.) From Science Frontiers #85, JAN-FEB 1993 . 1993-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf085/sf085b09.htm
... Science Frontiers ONLINE No. 7: June 1979 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Is there a science of anomalies?Westrum and Truzzi term their paper a "bibliographical introduction" to anomalies. Indeed, the article is laced with references to the great classics on scientific anomalies and worth reading for this aspect alone. But the authors go farther. First, they define three different kinds of scientific anomalies: accepted, validated, and alleged. Next, they discuss the criteria used in judging anomalies by the scientific establishment. In dealing with anomalies, the focus inevitably narrows down to the reliability of the data and, quite reasonably, the honesty of those collecting, reproducing, and otherwise manipulating these data. Westrum and Truzzi then turn to the great anomaly collectors (Fort, Gould, Sanderson, Heuvelmans). What did these men produce and is it valuable to science? (Westrum, Ron, and Truzzi, Marcello; "Anomalies: A Bibliographical Introduction with Some Cautionary Remarks," Zetetic Scholar, 1:69, 1978.) From Science Frontiers #7 , June 1979 . 1979-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf007/sf007p15.htm
... Science Frontiers ONLINE No. 57: May-Jun 1988 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Florida More Exotic Than The Travel Agents Promise Anyone who has visited Florida knows that it differs in several ways from the rest of North America. Now we find that Florida doesn't even belong to North America; it is an interloper, an "exotic terrane." How does one know this? Three facts hint that Florida doesn't belong: When pre-Cenozoic land masses are fitted together, assuming the truth of continental drift, an awkward overlap arises that suggests that Florida was not always where it is today; The latest paleomagnetic measurement of Florida's Paleozoic latitude is consistent with it being part of Gond wanaland rather than at its present latitude; Radiometric dating of zircons retrieved from a core extracted from Northern Florica yield an age of 16501800 million years. There are no known source rocks in the southeastern U.S . that old; Africa and South America are likely sources of such zircons. "These (latter) two new lines of geologic data provide strong evidence confirming previous suggestions that Florida was part of Gondwana during the early Paleozoic and that its current configuration is that of an exotic terrane sutured to North America during the fragmentation of Pangea." (Opdyke, Neil D., et al; "Florida as an Exotic Terrane: Paleomagnetic and Geochronologic Investigation of Lower Paleozoic Rocks from the Subsurface of Florida," Geology , 15:900, 1987.) Comment. Other exotic terranes have been ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf057/sf057g13.htm
... 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 Cometary scars on the moon?More information has surfaced on the enigmatic lunar swirl markings (Category ALE5 in our catalog: The Moon and the Planets. These whitish blotches are not only visually incongruous, being obviously different from the debris spla shes around craters, but they also exhibit curious magnetic properties. J.F . Bell and B.R . Hawke, of the University of Hawaii, have acquired near-infrared spectra of the swirl designated Reiner Gamma. They report that the composition of the swirl material does not match the crater ejecta; and, also, that a previously undetected reddish halo surrounds the swirl. Best guess at present: The swirls are the scars of comets -- probably less than 100 million years old. (Anonymous; "Cometary Scars on the Moon," Sky and Telescope, 75:11, 1988.) Comment. Does nearby earth also bear cometary scars? Some think that the 1908 Tunguska Event was a cometary impact. (See ETC2 in our catalog: Caro lina Bays, Mima Mounds .) Also see the the item below under GEOLOGY about comets and the earth's oceans. Reference. Both catalog volumes mentioned above are described here . From Science Frontiers #56, MAR-APR 1988 . 1988-2000 William R. Corliss ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf056/sf056a05.htm
... Science Frontiers ONLINE No. 65: Sep-Oct 1989 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Why the hammer head?You probably thought, as we did, that the function of the hammerhead shark's weirdly shaped head was to separate the eyes and thus improve binocular vision. This is not the case. The visual fields of the hammerhead's eyes do not overlap at all. Each eye presents the brain with a separate, completely different image to integrate. What, then, could be the purpose of the hammer head? No one really knows, but three suggestions are as follows: The head acts as a hydrofoil and gives the heavier-than-water, swimbladderless shark better swimming control. Grooves on the hammer head channel water toward the nostrils, providing "stereoscopic sniffing." The head is a platform for electromagnetic sensors that help locate prey. Stingrays are a favorite food of the hammerhead, and the shark may de-tect them electromagnetically, as surmised by the author of this article in the following encounters: "I have observed great hammerheads swimming close to the bottom, swinging their heads in wide arcs (a motion common, in a lesser degree, to all large sharks) as if using the increased electroreceptive area of their hammer like the sensor plate of a metal detector. Sometimes, these animals would doubleback to scoop up one of several stingrays hiding in the bottom silt. The minute electrical pulse that keeps the stingray's heart and spiracles operating betrays their presence to a hungry ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf065/sf065b06.htm
... 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 Reincarnation of ramanujan?In India, Shakuntala Devi is considered to be the reincarnation of Srinivasa Ramanujan, about whom we heard in the above item. We will not comment on the reincarnation bit, but it does seem that S. Devi's remarkable capabilities are somewhat different from those of Ramanujan. The latter intuitively saw mathematical relationships as expressed in equations and identities; Devi is a mental calculator of no mean talent. In 1977, Ms. Devi beat a UNIVAC 1108 computer to the 23rd root of a 201-digit number. The machine, which required two hours to program for the task, took more than a minto solve the problem. She took 50 seconds. "And, in 1981, she made the Guinness Book of World Records as the 'Human Computer' by correctly multiplying two 13-digit numbers -- 7,686,369,774,870 times 2,465,099,745,779 -- in 28 seconds. The awesome answer? 18,947,668,177, 995,426,462,773,730." S. Devi is also a calendar calculator, being able to name the day of the week for any date in the past or future, taking into account leap years and calendar changes. She never attended school or had any formal mathematical training! (Young, Luther; "Numbers Whiz Takes Delight in Beating Computers;" Baltimore Sun ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf056/sf056p14.htm
... 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 ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf056/sf056g16.htm
... actively participate in the recall of a simple thought. John stated, "I thought we'd find maybe 20,000 to 40,000 cells involved in the learned memory....The shock was that it was so easy to see wide-spread metabolic change....The number of brain cells [between 5 million and 100 million] involved in the memory for a simple learned discrimination made up about one-tenth of the whole brain." The findings of John et al are hotly contested by some brain researchers. One obvious conflict is that if up to 100 million brain cells are involved in storing just one simple memory, the brain will quickly use up all available cells. It must be that individual brain cells can participate in the storage of many different memories. The conventional mem-ory-trace theory would have to be replaced by a new type of memory architecture. (Bower, Bruce; "Million-Cell Memories," Science News, 130:313, 1986) Comment. Our thinking about biological memory may be controlled by our preoccupation with the two-dimensional circuits of computer memories. Biological memories might be three-dimensional, or of even higher order. Some scientists have ventured that memory might entail electrical charge distribution patterns in the brain; such need not be limited to two dimensions. The same thinking can be applied to the storage of genetic information. While DNA, RNA, etc., may be pieces in the puzzle, the complete solution may include the ways in which these molecules are bent, twisted ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf049/sf049p10.htm
... Science Frontiers ONLINE No. 45: May-Jun 1986 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Backtracking along the paluxy: or is there a deeper mystery?Ostensibly, the facts are as follows: Several series of tracks in the sedimentary rocks along the Paluxy River, in Texas, which many creationists have considered to be of human origin, have recently changed appearance, apparently due to erosion. "Due to an unknown cause, certain of the prints once labeled human are taking on a completely different character. The prints in the trail which I have called the 'Taylor Trail,' consisting of numerous readily visible impressions in a left-right sequence, have changed into what appear to be tridactyl (three-toed prints, evidently of some unidentified dinosaur. The changes in the impressions themselves are mostly confined to lengthening in the downriver direction. The most significant change, however, is that surrounding the toe area. In almost each of the prints in the trail, three large 'toes' have appeared, similar to nearby dinosaur tracks. These toes, typically, are coloration phenomena only, with no impressions, in most cases. Frequently the 'mud pushup' surrounding the original elongated track is crossed by this red coloration. The shape of the entire track, including both impression and coloration, is unlike any known dinosaur print." J. Moore, the author of this article and a creationist, suggests that creationists no longer use the Paluxy tracks as evidence that humans and dinosaurs once coexisted. But he ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf045/sf045p17.htm
