17 results found containing all search terms.
... Science Frontiers ONLINE No. 29: Sep-Oct 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Solving Problems In Your Sleep Psychiatrist Morton Schatzman is investigating how some people solve problems in their dreams. Part of his research involves assigning problems (really brain twisters) to students, who are then supposed to solve them in their sleep. One problem posed asked the students to discover how to generate the remaining letters in the following infinite, non-repeating sequence of letters OTTFF .. . Seven students said they discovered the correct answer in their dreams. Another twister concerned the letter sequence HIJKLMNO. What single English word is represented by this string of letters? One student dreamed he was swimming but failed to make the proper connection. ( ... Science Frontiers ONLINE No. 29: Sep-Oct 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Solving Problems In Your Sleep Psychiatrist Morton Schatzman is investigating how some people solve problems in their dreams. Part of his research involves assigning problems (really brain twisters) to students, who are then supposed to solve them in their sleep. One problem posed asked the students to discover how to generate the remaining letters in the following infinite, non-repeating sequence of letters OTTFF .. . Seven students said they discovered the correct answer in their dreams. Another twister concerned the letter sequence HIJKLMNO. What single English word is represented by this string of letters? One student dreamed he was swimming but failed to make the proper connection. ( ...
Terms matched: 2 - Score: 460 - 15 May 2017 - URL: /sf029/sf029p12.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 Pennsylvanian time-scale problems The advent of radiometric dating seemed to solve once and for all the problem of assigning dates to the key events in the earth's history. Indeed, all of the reference books confidently label charts with firm dates for the appearance of fishes, the demise of the dinosaurs, and so on. Alas, things are not quite as certain as they appear. Radiometric dating is not all that precise; errors may be large indeed. Take the Pennsylvanian period for example. It is part of the Carboniferous period, when many of the great coal deposits were laid down. The classical duration of the Pennsylvanian - ... used in many texts -- is 34 million years. A meticulous new study of central European stratigraphy now pegs the Pennsylvanian as spanning only 19 million years. Now that's a 44% change! This new figure for the duration of the Pennsylvanian has already cast doubt on the origin of the famous Pennsylvanian cyclothems (repetitive strata) in North America. It had been thought that these seemingly cyclic deposits were correlated with sea level changes forced by variations in the earth's orbit (the Milankovitch periods). With this substantial compression of Pennsylvan-ian time, this correlation falls apart. The cyclothems, which are of impressive area and thickness, now seem to have been created by some other, still unrecognized phenomenon. (Klein, George deV.; "Pennsylvanian Time Scales and ...
Terms matched: 2 - Score: 200 - 15 May 2017 - URL: /sf071/sf071g11.htm
... devices, stone-softening agents, and similar wild notions. In truth, as J. Protzen relates in the subject article, Inca stonemasonry was surprisingly unsophisticated and yet efficient, although some mysteries remain. Protzen has spent many months in Inca country experimenting with different methods of shaping and fitting the same kinds of stones used by the Incas. He found that quarrying and dressing the stones were not problems at all using the stone hammers found in abundance in the area. Even the precision-fitting of stones was a relatively simple matter. The concave depressions into which new stones were fit were pounded out by trial and error until a snug fit was achieved. Protzen's first-hand experience is impressive and convincing. Certainly he required no radical solutions. The problems that Protzen was not ... to solve to his satisfaction involved the transportation and handling of the large stones. The fitting process necessitated the repeated lowering and raising of the stone being fitted, with trial-and-error pounding in between. He does not know just how 100-ton stones were manipulated during this stage. To transport the stones from the quarries, some as far as 35 kilometers distant, the Incas built special access roads and ramps. Many of the stones were dragged over gravel-covered roads, as evidenced by their polished surfaces. The largest stone at Ollantaytambo weighs about 140,000 kilograms. It could have been pulled up a ramp with a force of about 120,000 kilograms. Such a feat would have required some 2,400 men. Getting the men was no problem, but ...
Terms matched: 2 - Score: 191 - 15 May 2017 - URL: /sf044/sf044p01.htm
... "exhibit a staggering ignorance about the nature of fossils and fossilization processes." Kemp concludes his review with an admission that the possibility of forgery should indeed be investigated. "But it should be done by those who actually understand fossils, fossilization and fossil preparation, not by a couple of people who exhibit nothing more than a gargantuan conceit that they are clever enough to solve other people's problems for them when they do not even begin to recognize the nature and complexity of the problems." (Kemp, Tom; "Feather Flights of Fancy," Nature, 324:185, 1986.) Finally, Hoyle and Wickramasinghe reply in a letter to Nature that L.M . Spetner and his colleagues in Israel have analyzed samples of the Archaeopteryx fossil with a scanning electron microscope ... states that Hoyle and Wickramasinghe "exhibit a staggering ignorance about the nature of fossils and fossilization processes." Kemp concludes his review with an admission that the possibility of forgery should indeed be investigated. "But it should be done by those who actually understand fossils, fossilization and fossil preparation, not by a couple of people who exhibit nothing more than a gargantuan conceit that they are clever enough to solve other people's problems for them when they do not even begin to recognize the nature and complexity of the problems." (Kemp, Tom; "Feather Flights of Fancy," Nature, 324:185, 1986.) Finally, Hoyle and Wickramasinghe reply in a letter to Nature that L.M . Spetner and his colleagues in Israel have analyzed samples of the Archaeopteryx fossil ...
Terms matched: 2 - Score: 181 - 15 May 2017 - URL: /sf050/sf050p17.htm
... Oct 1993 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology South American-polynesian Contacts At Easter Island The Ancient Horsemen Astronomy Another Quasar Enigma Sedimentary Rocks on Venus? Biology Porpoise Stun Gun Genes Aren't Everything Life Beyond 100 c Geology Nitrate Deposits Defy Rational Explanation Episode of Steep Geomagnetic Inclination Geophysics Astronomy and Earthquakes Satan's Storm Psychology Solving Problems in Your Sleep Unclassified Temptations of Numerology ...
Terms matched: 2 - Score: 171 - 15 May 2017 - URL: /sf029/index.htm
... sacrifice. Perhaps this was the case in North America, but deep in the South Pacific, just east of Fiji, on the islands of Tonga, native peoples scraped large mounds of earth for what seems to be a frivolous purpose: pigeon-snaring ! But bear in mind that carnivory on these romantic Pacific islands was difficult because large game animals were nonexistent. Captured enemies helped solve the protein problem, but pigeons were much more common, and some species were good-sized and delicious. So much so that eventually only island royalty was allowed to catch and eat them. Pigeon poachers were whipped or executed (and maybe eaten?) In fact, pigeon snaring became a royal sport. To this end, starting at least a thousand years ago, the king's loyal subjects ... as worship or sacrifice. Perhaps this was the case in North America, but deep in the South Pacific, just east of Fiji, on the islands of Tonga, native peoples scraped large mounds of earth for what seems to be a frivolous purpose: pigeon-snaring ! But bear in mind that carnivory on these romantic Pacific islands was difficult because large game animals were nonexistent. Captured enemies helped solve the protein problem, but pigeons were much more common, and some species were good-sized and delicious. So much so that eventually only island royalty was allowed to catch and eat them. Pigeon poachers were whipped or executed (and maybe eaten?) In fact, pigeon snaring became a royal sport. To this end, starting at least a thousand years ago, the king' ...
Terms matched: 2 - Score: 171 - 15 May 2017 - URL: /sf120/sf120p14.htm
... with otherwise subnormal intelligence. It is very clear that these so-called "idiot savants" use a variety of mental techniques, all rather different from rote memory, such as employed by memorizers of pi. First, we present Howe-and-Smith's abstract; then, a particularly interesting specific case. "A number of mentally handicapped individuals are able to solve difficult calendar date problems such as specifying the day of the week for a particular date, sometimes over spans of more than 100 years. These individuals are self-taught and do not follow procedures at all similar to the usual, published, algorithms. An investigation of one individual revealed that he retained considerable information about the structure of days in particular months, probably as visual images. His skill closely depended on ... -calculating by individuals with otherwise subnormal intelligence. It is very clear that these so-called "idiot savants" use a variety of mental techniques, all rather different from rote memory, such as employed by memorizers of pi. First, we present Howe-and-Smith's abstract; then, a particularly interesting specific case. "A number of mentally handicapped individuals are able to solve difficult calendar date problems such as specifying the day of the week for a particular date, sometimes over spans of more than 100 years. These individuals are self-taught and do not follow procedures at all similar to the usual, published, algorithms. An investigation of one individual revealed that he retained considerable information about the structure of days in particular months, probably as visual images. His ...
Terms matched: 2 - Score: 170 - 15 May 2017 - URL: /sf065/sf065p14.htm
... wipes" in Sky & Telescope do seem a bit arrogant, especially when famous scientists do not hesitate to employ ghostly ephemera to support theories favored by the establishment. Strange eclipses. Down the years, many fantastic solar coronas have been sketched during the few minutes of totality. Long coronal petals and errant streamers, often asymmetrically arrayed, are common in the Nineteenth Century astronony journals. Scientists have no problems with these. It is the highly geometrical coronas that are hard-to-account-for. The reported colored coronas, too, seem unlikely. Red, blue, and green hues are definitely frowned upon. Coronas should be brilliant white, perhaps yellowish. S.J . O'Meara, a contributing editor of S&T , thinks many of the older and wilder drawings ... coronas can be pinned on observer enthusiasm and active imagination. Modern photographs of coronas provide a much more conservative picture of the eclipsed sun. As for all those old observations of colored coronas, aerosols in the atmosphere, perhaps of volcanic origin, could have added the delicate tints reported. No unusual phenomena were involved. Problem solved! (O 'Meara, Stephen James; "Strange Eclipses," Sky & Telescope , 98:116, August 1999.) E.L . Trouvelot's portrait of the total solar eclipse of July 29, 1878 as seen from Wyoming. Note the geometrical symmetry of the spectacular corona. The TLP Myth. There is a long history of Transient Lunar Phenomena (TLPs). Almost as soon as the telescope was invented, observers began seeing flashes ...
Terms matched: 2 - Score: 170 - 15 May 2017 - URL: /sf126/sf126p02.htm
... Science Frontiers ONLINE No. 112: Jul-Aug 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Dolphin Refrigerators Dolphins and other cetaceans have an overheating problem. For high hydrodynamic performance, their bodies must be nicely streamlined. For males, this means that their testicles must be stored internally. But dolphins are very active animals, and their muscles generate considerable heat -- too much heat for sperm to survive without some sort of special cooling system. (Recall that human males with undescended testicles may become sterile.) Since dolphins are obviously procreating, evolution must have come to the dolphins' rescue. Evolution's engineering solution installs heat exchangers in the dolphins' tails and dorsal fins. Blood heated in the vicinity of the testes is ... cetacea do quite well without dorsal fins; viz., the finless dolphin found in IndoPacific waters. Could dorsal fins actually have evolved for thermal control rather than stabilization? And how do dolphin's breathe if their lungs have collapsed? Their blood and muscles act as oxygen reservoirs -- still another evolutionary adaptation. Speaking of evolution, as one must when discussing Nature's neat methods of solving bioengineering problems, how did random mutation and natural selection hit upon the heat-exchanger and oxygen-reservoir ideas? We know! These were more millimeter-by-millimeter climbs up Mount Improbable. Reference. The finless dolphin and the general question of dorsal-fin evolution is the subject of Section BMA46 in our Catalog Mammals I . Details may be found at here . From Science Frontiers ...
Terms matched: 2 - Score: 164 - 15 May 2017 - URL: /sf112/sf112p05.htm
... The pebbles are probably collected both by excavation and from the surface. Some local mammalogists believe these are used as dew traps. Since the air around the pebbles warms more rapidly as the sun rises than do the pebbles themselves, dew forms on the pebbles by condensation. As the areas in which these mounds are found are quite dry, except after a heavy rain, these dew traps solve the problem of water shortage. Local farmers use the many pebble mounds for mixing concrete. It is believed that the ancient people of the Mediterranean region used a dew trap method comparable to that of P. chapmani ." (Nowak, Ronald M.; "Australian Native Mice," Walker's Mammals of the World , Baltimore, 1991, p. 820.) Comment. Now we ... diameter. The pebbles are probably collected both by excavation and from the surface. Some local mammalogists believe these are used as dew traps. Since the air around the pebbles warms more rapidly as the sun rises than do the pebbles themselves, dew forms on the pebbles by condensation. As the areas in which these mounds are found are quite dry, except after a heavy rain, these dew traps solve the problem of water shortage. Local farmers use the many pebble mounds for mixing concrete. It is believed that the ancient people of the Mediterranean region used a dew trap method comparable to that of P. chapmani ." (Nowak, Ronald M.; "Australian Native Mice," Walker's Mammals of the World , Baltimore, 1991, p. 820.) Comment. ...
Terms matched: 2 - Score: 159 - 15 May 2017 - URL: /sf081/sf081b08.htm
... be the notorious "missing mass" in the universe? Not likely. The mass of the purported black hole in our Galaxy is only about several million solar masses-- not even close to what is needed. (Maddox, John; "Black Hole at the Galactic Centre," Nature, 315:93, 1985.) Comment. Actually, it would be rather amusing if the problem of the missing mass, which we cannot see, were solved by black holes, which we cannot see either! Reference. Black holes and other cosmological entities are discussed in our Catalog: Stars, Galaxies, Cosmos. to order the book, visit: here . From Science Frontiers #40, JUL-AUG 1985 . 1985-2000 William R. Corliss ...
Terms matched: 2 - Score: 159 - 15 May 2017 - URL: /sf040/sf040p06.htm
... 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 ... '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 ...
Terms matched: 2 - Score: 159 - 15 May 2017 - URL: /sf056/sf056p14.htm
... 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 Solar Model Confirmed, But Standard Model Crippled A persistent astronomical anomaly (well-covered in SF#112 and earlier) has apparently been satisfactorily disposed of. Even staunch anomalists will have to close the book on the solar-neutrinodeficit problem. No deficit really exists because the neutrinos emitted by the sun change while in flight from a type that is easy to detect to a type that is difficult to register experimentally. The total number of neutrinos reaching the earth is what it should be according to theory but we have not been able to detect them all. This neutrino schizophrenia has now been confirmed, and our theory about how the sun ... is safe. But the erasure of the solar-neutrinodeficit problem tells the particle physicists that neutrinos do indeed change type, which implies that they possess mass. But anomalies are sometimes contagious. The Standard Model of particle physics, so successful in many respects, is now ailing. It asserts that neutrinos cannot change types and do not possess mass. (Seife, Charles; "Polymorphous Particles Solve Solar Mystery," Science, 292:2227, 2001. Weiss, P.; " Physics Bedrock Cracks, Sun Shines In," Science News, 159:388, 2001.) Comment. Without question, we have here an experimental triumph, but the undermining of that pillar of physics, the Standard Model, is a high price to pay. We have closed one book, ...
Terms matched: 2 - Score: 157 - 15 May 2017 - URL: /sf137/sf137p04.htm
... Project Sourcebook Subjects Celestial burlesque?Astronomers have long wondered about Mercury. Its density (5 .44) is unusually high for such a small planet, and its orbit's inclination (7 ) and eccentricity (0 .206) are also anomalously high. In one blow. W. Benz, A.G .W . Cameron, and W. Slattery may have solved all three problems. Four frames from a computer simulation of proto-Mercury being stripped of its lighter, outer crust by a collision. Frame times are -1 , + 2.3 , + 7.7 , and + 41.7 minutes after impact. The dark molten sheet of iron in Frame #4 will collapse into a sphere, while the silicates will escape Mercury's gravitational pull ... This Issue Sourcebook Project Sourcebook Subjects Celestial burlesque?Astronomers have long wondered about Mercury. Its density (5 .44) is unusually high for such a small planet, and its orbit's inclination (7 ) and eccentricity (0 .206) are also anomalously high. In one blow. W. Benz, A.G .W . Cameron, and W. Slattery may have solved all three problems. Four frames from a computer simulation of proto-Mercury being stripped of its lighter, outer crust by a collision. Frame times are -1 , + 2.3 , + 7.7 , and + 41.7 minutes after impact. The dark molten sheet of iron in Frame #4 will collapse into a sphere, while the silicates will escape Mercury' ...
Terms matched: 2 - Score: 150 - 15 May 2017 - URL: /sf061/sf061a03.htm
... falls or mutations) plus a sorting mechanism (human selection or natural selection) can produce geofacts or new species. This sort of explanatory mechanism can, in principle, explain just about anything! (Meltzer, David; "Stones of Contention," New Scientist, p. 31, June 24, 1995.) R. Dennell and L. Hurcombe, two archeologists faced with the geofact problem at their Pakistan dig, tried to solve it experimentally. They deliberately dropped quartzite rocks from heights onto hard surfaces. They concluded: "While conceding that had we conducted the experiment with a thousand, ten thousand, or a hundred thousand stones, a few might have fractures, we would nevertheless maintain that the chances of any showing multiple, multi-directional flaking and all with bulbs of ... are as remote as the proverbial monkey typing Shakespeare." (Dennell, Robin, and Hurcombe, Linda; "Comment on Pedra Furada." Antiquity, 69:604, 1995.) From Science Frontiers #105, MAY-JUN 1996 . 1996-2000 William R. Corliss ...
Terms matched: 2 - Score: 148 - 15 May 2017 - URL: /sf105/sf105p00.htm
... .) Comment. WIMPS represent just the kind of particle that Dewey Larson railed against in his book: The Universe of Motion. He maintains that astronomers have to engage in such ridiculous theoretical gymnastics and invention only because they have picked the wrong energy-generating mechanism for stars and refuse to give it up! Larson's theory, on the other hand, solves this and many other astronomical problems, but at the initial cost of a radical change in one's conception of the universe. From Science Frontiers #41, SEP-OCT 1985 . 1985-2000 William R. Corliss ...
Terms matched: 2 - Score: 147 - 15 May 2017 - URL: /sf041/sf041p05.htm
... the flow of heat from great depths. Hundreds of kilometers below the surface lurk huge pieces of foundered continental crust and bizarre structures of unknown origin. Typical subjects covered: Anomalous gravity signals * Mid-plate volcanism * Mysterious seismic reflectors * Seismic velocity discontinuities * Deep-focus earthquakes * Incompleteness of the stratgraphic record * Cyclothems and rhythmites * Exotic terranes * Compass anomalies * Earth-current anomalies * Problems of paleomagnetism * Polarity reversals [Picture caption: Model of the earth's interior] View Cart Buy online via PayPal with MC/Visa/Amex 230 pages, hardcover, $18.95, 52 illustrations, 5 indexes 1991, references, LC 90-92347, ISBN 915554-25-9 , 7x10 format. Carolina Bays, Mima Mounds, Submarine Canyons; A Catalog ... x 10". Biological Anomalies: Birds: A Catalog of Enigmas and Curiosities Sorry, Out of print Birds are everywhere: some can fly high over the Himalayas, others can dive as deep as 500 meters in the oceans, some migrate unerringly from one end of the earth to the other. With more than 9,000 species recongnized, birds present us with hundreds of scientific puzzle to solve. Typical subjects covered: Asymmetric birds * Wing claw and spurs * Inherited callosities * Unrelated birds that look alike * Enigmas of avian instincts * The intelligence of birds * An avian aesthetic sense? * Birds that roost upside down * The insiduous nature of brood parasitism * Avian battles, courts, funerals * Unsolved mysteries of migration * Poisonous birds * The unique avian respiratory system * The two ...
Terms matched: 2 - Score: 142 - 10 Oct 2021 - URL: /sourcebk.htm
