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... Science Frontiers ONLINE No. 80: Mar-Apr 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Anomalous Optical Events In The Upper Atmosphere A photodiode was recently lofted to high altitudes (over 400 kilometers) in an experiment to measure the optical power of lightning. During the 10-minute flight, more than 500 lightning-related events were recorded over that part of the globe visible from the rocket's altitude. "Among these is a class of about 23 events all having an anomalous signature, with obvious clustering of optical impulses or continuous emissions, and resulting durations of several hundred milliseconds. Such durations are much longer than typical for lightning-related events recorded at the rocket, which are more frequent overall. Every anomalous optical ... Science Frontiers ONLINE No. 80: Mar-Apr 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Anomalous Optical Events In The Upper Atmosphere A photodiode was recently lofted to high altitudes (over 400 kilometers) in an experiment to measure the optical power of lightning. During the 10-minute flight, more than 500 lightning-related events were recorded over that part of the globe visible from the rocket's altitude. "Among these is a class of about 23 events all having an anomalous signature, with obvious clustering of optical impulses or continuous emissions, and resulting durations of several hundred milliseconds. Such durations are much longer than typical for lightning-related events recorded at the rocket, which are more frequent overall. Every anomalous optical ...
Terms matched: 2 - Score: 425 - 15 May 2017 - URL: /sf080/sf080g17.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 Natural Laser Beacons "It has long been realized that the Earth's upper atmosphere cannot be in thermodynamic equilibrium, and during the last decade astronomers have made telescopic observations of nonequilibrium processes taking place in the upper atmospheres of our Earth-like neighbors, Mars and Venus. A preliminary analysis by Michael Mumma, of Goddard Space Flight Center in Maryland, and his colleagues. indicated that processes analogous to optical pumping in laboratory lasers were taking place and led to the coining of the term 'natural lasers.' Now, Deming and colleagues from the Goddard team have taken new observations of emission from Mars and Venus at wavelengths near 10 micrometers ... and modelled them to show that stimulated emission -- the effect which makes lasers so powerful -- accounts for up to seven per cent of the total emission. This is not a large amplification factor by laboratory standards, particularly for a CO2 laser. But, the authors speculate that the sheer size of the natural lasers could make them useful tools in the future for communicating with distant civilizations beyond our own planetary system." The atmospheres of Mars and Venus are almost pure CO2 . The CO2 molecules are excited by the absorption of energetic solar photons; then, thermally emitted photons at about 10 micrometers from lower reaches of the atmosphere collide with the excited molecules, stimulating them to emit another 10-micrometer photon, thus doubling the number of photons. This is typical laser action. Deming ...
Terms matched: 2 - Score: 206 - 15 May 2017 - URL: /sf032/sf032p03.htm
... Science Frontiers ONLINE No. 95: Sep-Oct 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Gamma-ray flashes in the upper atmosphere Something strange is definitely going on in the upper atmosphere, particularly above thunderstorms. We have already reported on the mysterious light flashes (SF90) and radio emissions (SF#94). Now, we record similar, possibly intimately related flashes of energy in a different portion of the electromagnetic spectrum. "Detectors aboard the Compton Gamma Ray Observatory have observed an unexplained terrestrial phenomenon: brief, intense flashes of gamma rays. These flashes must originate in the atmosphere at altitudes above at least 30 kilometers in order to escape atmospheric absorption and reach the detectors." The energies of the gamma rays in ... flashes and, of course, it does not occur above 30 kilometers altitude anyway. G.J . Fishman et al, who reported on this new phenomenon in Science, speculate that some hitherto unrecognized, high altitude electrical discharges occur high above areas hosting thunderstorms. Possibly, upwardly directed lightning (" rocket lightning") is involved in all three of the newly found flashes in the radio, optical, and gamma portions of the electromagnetic spectrum. (Fishman, G.J ., et al; "Discovery of Intense Gamma-Ray Flashes of Atmospheric Origin," Science, 264:1313, 1994. Kerr, Richard A.; "Atmospheric Scientists Puzzle Over High-Altitude Flashes," Science, 264:1250, 1994.) From Science Frontiers #95, SEP ...
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... 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 Infrared Atmospheric Waves When the night sky is photographed in the infrared portion of the spectrum, luminous wave-like structures appear in the upper atmosphere. The wave crests are about 50 kilometers apart; lengthwise, they stretch up to 1.000 kilometers; altitude, about 85 kilometers. As many as ten waves may be seen at the same time. Morphologically, these waves resemble noctilucent clouds, which are sun-illumined, high-altitude clouds. The infrared waves, however, appear when the sun is well below the horizon. Since these waves are seen only at low angles over the horizon, some geophysicists propose they are the ... " Science, 225:172, 1984.) Comment. As described in our Catalog Lightning, Auroras, Nocturnal Lights. luminous atmospheric waves are, on rare occasions, visible to the naked eye. It is possible that the bandedsky phenomenon is related to the infrared waves. For more information on the book just mentioned, visit: here . Rippled emissive layer around the earth. The variable optical path near the horizon could create luminous ripples to a ground observer. From Science Frontiers #35, SEP-OCT 1984 . 1984-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 63: May-Jun 1989 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A Hex On Saturn "By piecing together pictures of Saturn taken by the Voyager-2 spacecraft, David A. Godfrey (National Optical Astronomy Observatories) has discovered an unusual feature in the planet's atmosphere. His mosaics reveal a hexagon centered on the north pole. Since neither probe flew directly over the pole, the complete scene has to be created by 'stretching' a series of photographs taken from the side as Saturn rotated, then fitting them into a polar projection." The straight sides of the hexagon are each about 13,800 kilometers long. The entire structure rotates with a period of 10h 39m 24s, the ... Science Frontiers ONLINE No. 63: May-Jun 1989 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A Hex On Saturn "By piecing together pictures of Saturn taken by the Voyager-2 spacecraft, David A. Godfrey (National Optical Astronomy Observatories) has discovered an unusual feature in the planet's atmosphere. His mosaics reveal a hexagon centered on the north pole. Since neither probe flew directly over the pole, the complete scene has to be created by 'stretching' a series of photographs taken from the side as Saturn rotated, then fitting them into a polar projection." The straight sides of the hexagon are each about 13,800 kilometers long. The entire structure rotates with a period of 10h 39m 24s, the ...
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... Quasars * Cosmology. Chapter 3. Biology: Humans .* Other Mammals * Birds * Reptiles and Amphibians * Fish * Arthropods * Invertebrates * Plants and Fungi * Microorganisms * Genetics * Origin of Life * Evolution. Chapter 4. Geology: Topography * Geological Anomalies * Stratigraphy * Inner Earth. Chapter 5. Geophysics: Luminous Phenomena* Weather Phenomena * Hydrological Phenomena * Earthquakes * Anomalous Sounds * Atmospheric Optics. Chapter 6. Psychology: Dissociation Phenomena * Hallucinations * Mind - Body Phenomena * Hidden Knowledge * Reincarnation * Information Processing * Psychokinesis. Chapter 7. Chemistry, Physics, Math, Esoterica: Chemistry * Physics * Mathematics. Comments from reviews: "This fun-to-read book may lead some to new scientific solutions through questioning the phenomena presented", Science Books and Films ... details: 356 pages, paperback, $18.95, 417 illus., subject index, 1994. 1500+ references, LC 93-92800 ISBN 0-915554-28-3 , 8.5 x 11. Order From:The Sourcebook Project P.O . Box 107 Glen Arm, MD 21057 USA Tel: + 1 (410) 668 6047. Ordering information Prices are in U.S . dollars. Canadian dollars and pounds sterling are accepted at prevailing exchange rates. U.S . customers should add $2 for each order under $30. Foreign customers should add $12.00 per book for airmail mail. Preface from the Book Sorry, out of print Sorry, out of print Science Frontiers II More Anomalies And Curiosities Of Nature Same format ...
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... Science Frontiers ONLINE No. 94: Jul-Aug 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects An offset solar halo of 28 Anomalists should not perfunctorily dismiss unusual halo phenomena as trivial and/or boring. The laws of atmospheric optics have no room for the phenomenon described below. It is just as anomalous as ball lightning, although perhaps not as exciting! The 22 halo on the left is common and nonanomalous. However, optical theory has no room for the offset 28 halo on the right. June 22, 1993. North Cornwall, UK. "A 22 halo [the well-explained type] was very prominent, with the sector DCE being exceptionally bright and the colours quite strong. On the right-hand side ... this, a larger but fainter halo could easily be seen, having a diameter of about 28 (see figure). It was white in colour. The sector CB was the brightest, sector BF not so bright but easily seen, but the sector AF could be seen only with difficulty. The halo was not seen to penetrate the 22 halo at either points A and C and so it could not be stated positively that the halo would have passed through the Sun, although it looked as though this would have been the case. The centre of the 28 halo had an altitude approximately the same as that of the Sun. The phenomenon lasted for about 20 minutes, although the 22 halo lasted for at least another hour." (Miles, Howard; "An Unusual Solar Halo ...
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... Sourcebook Project Sourcebook Subjects Natural lasers in the terrestrial and martian skies?In a current laser patent dispute, one side claims that a certain laser patent is invalid because natural phenomena cannot be patented under U.S . law. It seems that last year, Michael Mumma and colleagues at Goddard Space Flight Center and the University of Maryland discovered a 10-micrometer (infrared) laser in the Martian atmosphere. This laser is located about 75 kilometers above the surface, is optically pumped by the sun, and radiates an astonishing 101 2 watts. The terrestrial atmosphere may contain a natural 4.3 -micrometer laser, for auroras are accompanied by very intense molecular emissions at this wavelength. (Raloff, J.; "Gould Laser Patent Ruled Invalid -- So Far," Science News ... 121: 199, 1982.) From Science Frontiers #21, MAY-JUN 1982 . 1982-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 126: Nov-Dec 1999 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Towering Shafts Of Light Ice crystals in the atmosphere can dazzle us with bright haloes, sundogs, and similar optical phenomena -- as long as the sun or moon are shining. Sometimes, though, human light sources will create remarkable displays using the same ice crystals. The first of the two examples below is notable for its extreme height; the second provides the accepted explanation. August 24, 1998. South China Sea. Aboard the m.v . Oriental Bay , Hong Kong to Singapore. "Four shafts of narrow vertical light were observed reflected in the sky. Upon consulting the chart it was revealed that they were 'reflections ... of the four flares of the Kakap Natuna oil terminal, which at this point was 75 n mile away. "As indicated in the sketch, the shafts of light were visible above a lower layer of stratocumulus cloud, and, when measured by sextant, their upper tips were calculated to be nearly 13 km high. The shafts appeared to be reflected in a thin layer of cirrostratus and, as the vessel approached to 60 n mile from the terminal, the glow from the flares was also visible on the horizon." (Peterson, J.L .; "Optical Phenomenon," Marine Observer, 69:110, 1999.) Tall light pillars rise over the South China Sea February 4, 1999. Toyama Bay, Japan. The caption quoted below is located beneath an ...
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... 74 illustrations, 5 indexes, 1982. 1070 references, LC 82-99902, ISBN 915554-09-7 , 7x10-in format. Hardcover edition, $24.95: out of stock Tornados, Dark days, Anomalous Precipitation: A catalog of Geophysical Anomalies Sorry: Out of Print. No longer available. Here is our "weather' Catalog. As everyone knows, our atmosphere is full of tricks, chunks of ice fall from the sky, tornado funnels glow at night. The TV weathermen rarely mention these "idiosyncrasies". [Picture caption: Conical hailstones with fluted sides] Typical subjects covered: Polar-aligned cloud rows * Ice fogs (the Pogonip) * Conical hail * Gelatinous meteors * Point rainfall * Unusual incendiary phenomena * Solar activity and thunderstorms * ... behavior; and (3 ) Their unusual talents and faculties. Typical subjects covered: Mirror-image twins * The sacral spot * The supposed human aura * Baldness among musicians * Human tails and horns * Human behavior and solar activity * Cycles of religiousness * Cyclicity of violent collective human behavior * Handedness and longevity * Wolf-children * The "Mars Effect" * Telescopic vision *Dermo-optical perception * Hearing under anesthesia * Human navigation sense * Asymmetry in locomotion * Sex-ratio variations Comments From Reviews: "All I can say to Corliss is carry on cataloging". New Scientist View Cart Buy online via PayPal with MC/Visa/Amex 304 pages, hardcover, $19.95, 52 illus., 3 indexes, 1992. 548 references, LC 91- ...
Terms matched: 2 - Score: 161 - 10 Oct 2021 - URL: /sourcebk.htm
... asteroids, or neither? This was the big one, but where did it come from? Snowballs in hell? Biology It's according to hoyle and wickramasinghe Music of the hemispheres The urge to replicate: part i The urge to replicate: part ii Geology Might diamonds be dead bacteria? Deep quake deepens mystery Geophysics Sylvanshine: a newly recognized optical phenomenon Gamma-ray flashes in the upper atmosphere A DEEP-SEA HYDROTHERMAL VENT INSTEAD OF A WARM LITTLE POND? Psychology The solar wind and hallucinations Physics Cold fusion update: 1994 Miscellaneous A SKEPTIC'S NDE -- NOT SO MYSTICAL ...
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... . 49: Jan-Feb 1987 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Those Old Maps of Antarctica Inca Walls and Rockwall, Texas Astronomy Enormous Stellar Shell Raises Theoretical Questions Radar Glories on Jupiter's Moons Optical Bursters Halley's Confounding Fireworks Neptune's Strange Necklace Recent Explosion on Sirius? Biology Prebiological Chemistry in Titan's Atmosphere Million-cell Memories? Grounded Bats Nicheless Philosophical Confusion? Monarch Migration An Illusion Geology Moho Vicissitudes A Slice of Ocean Crust in Wyoming The NACP Anomaly Reversed Magnetization in Rocks Geophysics Geomagnetic Reversals From Impacts on the Earth Mystery Plumes and Clouds Over Soviet Territory Sailing Through A Waterspout Psychology Personality and Immunity ...
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... galactic "shells" or "something else" The nullarbor lode Biology Cricket coordination Thousands of grebes fall from the skies Spider swordplay Archaea: the living ancestors of all life forms Life-creation from a different perspective Geology Possible chain of meteorite scars in argentina Dinosaur flatulence and climate changes The steens mountain conundrum Aerial bioluminescence Dead water Concentric, rotating luminous rings seen in sweden Anomalous optical events in the upper atmosphere Unidentified light Unclassified First cold-fusion bomb? When the chips are down ...
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... of Jupiter's Orbit AJF INTRINSIC RADIATION FROM JUPITER AJF1 Jupiter's Intrinsic Radiation AJF2 Variations in Jupiter's Decametric Radiation AJL JUPITER'S REMARKABLE GALILEAN SATELLITES AND RING AJL1 Pre-Voyager Sightings of Jupiter's Ring AJL2 Io's Bizarre Physical Makeup AJL3 Io's Anomalously Energetic Volcanos AJL4 Ganymede's Grooved Terrain AJL5 Europa's Lineaments AJL6 Temporary Disappearance of Ganymede AJW JOVIAN ATMOSPHERIC PHENOMENA AJW1 Periodicities of Jovian Atmospheric Features AJX TRANSIT AND OCCULTATION PHENOMENA AJX1 Distorted Shapes of Galilean Satellites in Transit AJX2 Hot Satellite Shadows AJX3 Dark Transits of Galilean Satellites AJX4 Double Shadows of Io AJX5 Limb Phenomena during Occultations and Transits AJX6 Post-Eclipse Brightening of Io AJX7 Discrepancies in Predictions of of Eclipses and Transits AJX JUPITER'S MAGNETIC FIELD AJX1 Offset Magnetic Field AL THE MOON ALB THE MOON ... Changes within Historical Times ALF LUNAR LUMINOUS PHENOMENA ALF1 Infrared Anomalies ALF2 Lunar Catastrophism within Historical Times ALF3 Transient Points of Light ALF4 Localized Color Phenomena ALF5 Transient, Large-Area Luminescence ALF6 Lightning-Like Phenomena on the Moon ALL THE MOTION OF LUNAR SATELLITES ALL1 Perturbation of Artificial Lunar Satellites ALO ANOMALOUS TELESCOPIC AND VISUAL OBSERVATIONS ALO1 Doubling of Lunar Detail ALO2 Variable Spots, Streaks, and Other (Apparently) Optical Phenomena ALO3 Banded Craters ALO4 Lunar "Canals" and Lineaments ALO5 The Lunar Zodiacal Light ALO6 Distortions of the Lunar Disk ALO7 Bright Diverging Ray above the Moon ALO8 Dark Triangular Patches under the Moon ALO9 Ring of Light around the New Moon ALO10 Shortened Lunar Crescents ALO11 The Lunar Post-Sunset Horizon Glow ALW LUNAR "WEATHER" ALW1 Clouds, Mists, and Obscurations ALW2 Anomalous Ion Clouds Detected on ...
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... fields, catalog sections that are already in print are given alphanumerical labels. For example, BHB1 = B (Biology)+ H (Humans)+ B (Behavior)+ 1 (first anomaly in Chapter BHB). Some anomalies and curiosities that are listed below have not yet been cataloged and published in catalog format. These do not have the alphanumerical labels. GE ELECTROMAGNETIC PHENOMENA IN THE ATMOSPHERE GEB RARE RAINBOWS AND ALLIED SPECTRAL PHENOMENA GEB1 Unusual Multiple Rainbows GEB2 Intersecting Rainbows GEB3 Lunar Rainbows with Offset White Arcs and Bows GEB4 Red Rainbows GEB5 Moving Rainbows... GEB6 Solar Rainbows with Offset White Arcs GEB7 Lunar Rainbows Transforming to Disks GEB8 Radial Streaks Crossing Rainbows GEB9 Rainbows Perturbed by Thunder and Lightning GEB10 Anomalous Fogbows... GEB11 Anomalous Dewbows, Cloud bows, Horizontal Rainbows GEB12 Sandbows ... Dark Lines in the Sky GEH UNUSUAL HALO DISPLAYS AND CORONAS GEH1 Offset Halos and Anomalous Arcs GEH2 Noncircular Halos GEH3 Extraordinary Mock-Sun and Mock-Moon Displays GEH4 Halos Dividing Sky Colors GEH5 Bishop's Ring... GEH6 Halos of Unusual Radii GEH7 Jumping and Moving Halos GEH8 Kaleidoscopic Suns GEH9 Skewed and Deformed Halo Displays GEH10 Bottlinger's Rings GEH11 Transient Lines Superimposed on Halo Displays GEH12 Optical Effects Where Halo Displays Touch the Horizon GEH13 Close, One-Sided Mock Suns GEH14 Halo Displays Formed by Terrestrial Ice Crystals Anomalous Lunar Coronas Circumzenithal Arc and Black Band GEI OBSERVER-CENTERED PHENOMENA GEI1 Puzzling Features of the Brocken Specter GEI2 Heligenschein GEI3 Rotating Spokes about the Shadow of One's Head Sylvanshine Snow Sparkles GEL LOW-SUN PHENOMENA GEL1 Puzzling Features of the Green Flash GEL2 Anomalous Diverging ...
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... vertical rock free-fall ever recorded seismically and it registered on seismographs up to 200 km distant." (Uhrhammer, R.A .; "Seismic Analysis of the Yosemite Rock Fall of July 10, 1996," Eos, 77:508, 1996.) December 9, 1995. Southern Ecuador. "On the afternoon of December 9, 1995, a bolide exploded in the atmosphere over the Andes in southern Ecuador. Many people in nearby towns witnessed the event. They reported seeing a streaking meteor, which terminated in a loud and brilliant explosion. In some locales, the flash was noticeable even through cloud cover. The burst of light was observed by satellite optical sensors used to detect atmospheric nuclear tests. Three local seismic stations also recorded signals from the explosion.. ... This bolide appears to be unique in that it was observed by eyewitnesses and located by both satellite and ground-based sensors." The sound of the meteor's explosion was heard at least 56 kilometers away. (Chael, Eric P.; "Seismic Signals from a Bolide in Ecuador," Eos, 77:508, 1996.) From Science Frontiers #111, MAY-JUN 1997 . 1997-2000 William R. Corliss ...
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... comet or meteorite. Vasilyev's data is based upon 167 reports, mostly in Russian. They show once again that this was no ordinary impact event, as illustrated by the following observations: A "local" magnetic storm began about 6 minutes after the explosion (If that is what it really was.) and lasted for more than 4 hours. These magnetic perturbations resembled those following nuclear atmospheric explosions. The Tunguska object left no smoky trail like many fireballs, but rather irridescent bands that looked like a rainbow. Following the "explosion," at least part of the object continued on in the same direction but veered upwards. [Meteors sometimes skip out of the atmosphere on trajectories like this.] Although the Tunguska event occurred on June 30, 1908, optical anomalies appeared all ... northern Europe as early as June 23. These included mesospheric, silvery clouds, very bright nights, colorful twilight afterglows [something like those following the Krakatoa eruption], and remarkably intense and long-lasting solar halos. Some of these effects persisted until late July. Neither craters nor meteoric debris have been discovered so far, despite assiduous searches. The explosion created a shock wave that leveled 2150 km2 of taiga and a flash that singed about 200 km2. (Vasilyev, N.V .; "The Tunguska Meteorite: A Dead-Lock or the Start of a New Stage of Inquiry?" RIAP Bulletin, 1;3 , nos. 3-4 , July-December 1994, and 2:1 , no. 1, January-March 1995. RIAP = Research ...
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... , when luminous ripples were observed at about 90 kilometers altitude moving at 91 meters/second, with a crest-to-crest wavelength of 16 kilome ters. The precise source of the visible light is still in doubt as is the identity of the stimulus causing the glowing ripples. Peterson has noted some correlation between the ripples, both visible and infrared, and the lunar high tide in the atmosphere. Gravity waves could thus be the stimulus creating the ripples. (Peterson, Alan W.; "Airglow Events Visible to the Naked Eye," Applied Optics, 18:3390, 1979.) Comment. Peterson's work may lead to explanations of the auroral "meteors" and the many reports of "banded sky" from astronomers. From Science Frontiers #10, Spring ... . 1980-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 33: May-Jun 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Mystery cloud of ad 536 "Dry fogs appear in the atmosphere when large volcanic eruptions inject massive quantities of fine silicate ash and aerosol-forming sulphur gases into the troposphere and stratosphere. Although the ash gravitationally settles out within weeks, the aerosols spread around the globe and can remain suspended in the stratosphere for years. Because solar radiation is easily absorbed and backscattered by the volcanic particles, a haziness in the sky and a dimming of the Sun and Moon are produced. Very dense and widespread dry fogs occur, on the average, once every few centuries. The sizes and intensities of some of the largest of them before the modern scientific ... have been estimated by several indirect methods. The densest and most persistent dry fog on record was observed in Europe and the Middle East during AD 536 and 537. Despite the earliness of the date, there is sufficient detailed information to estimate the optical depth and mass of this remarkable stratospheric dust cloud. The importance of this cloud resides in the fact that its mass and its climatic consequences appear to exceed those of any other volcanic cloud observed during the past three millenia. Although the volcano responsible remains a mystery, a tropical location (perhaps the volcano Rabaul on the island of New Britain, Papua, New Guinea) can be tentatively inferred." (Stothers, R.B .; "Mystery Cloud of AD 536," Nature, 307:344, 1984.) Comment. ...
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... Science Frontiers ONLINE No. 119: Sep-Oct 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Some Green Flashes Are Yellow Rarely, green flashes are observed just as the tip of the setting sun disappears below the horizon. Most of these flashes have a perfectly good explanation. The earth's atmosphere acts like a prism and disperses the light of the sun into a spectrum, and the last portion of this spectrum that one usually sees is green. Conditions have to be just right, though. A flat horizon and a layer of warm air are important. But even when conditions seem perfect, the green flash does not always appear, and all one sees is the red tip of the sun sinking out of sight. Even ... the patient observer is rewarded by a green flash, he may really have been deceived, for there are "false" green flashes. A. Young, San Diego State University, reported at a recent meeting of the American Astronomical Society on a peculiar type of optical illusion that can afflict observers of the setting sun. It seems that the intense red light of the sun near the horizon can bleach the red-sensitive receptors in the retina so that an intent observer becomes temporarily color blind to red. When this happens, the observer sees the yellow part of the dispersed solar spectrum as being green (yellow minus red = green). The true green flash may never have appeared at all. (Seife, Charles; "Don't Let Your Eyes Deceive You," New ...
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... Curious Internal Structures BBO ORGANS BBO1 Complexity and Sophistication of Some Owl Ear-Brain, Sound-Localization Systems BBO2 Regeneration of Brain Neurons BBO3 Curiosities of Avian Brains BBO4 The Pecten: A Unique Structure in the Avian Eye BBO5 Curiosities of Avian Eyes BBO6 High Complexity and Sophistication of the Avian Eye BBO7 Remarkable Tongue Adaptations BBO8 The Loss and Reduction of Reproductive Organs BBT UNUSUAL TALENTS AND FACULTIES BBT1 Infrasound and Atmospheric Pressure-Change Detection BBT2 Utility of Ultraviolet Vision in Birds BBT3 Echolocation: Parallel Evolution in Birds BBT4 Navigational Feats during Migration BBT5 Homing: Release Experiments BBT6 Curious Migration Phenomena: Navigation Errors? BBT7 Complexity and Sophistication of Avian Navigation BBT8 Inheritance of Migration Data BBT9 The Existence of Avian Migration BBT10 Sensitivity to Impending Weather and Earthquakes BBT11 Possible Unrecognized Senses BBT12 Remarkable Feats of Flight BBT13 The Origin of ... Special Brain Cells The "Seeing" Ear Role of Olfactory Receptors in Physical Development Information Transfer in the Cerebrospinal Fluid Utility of the Appendix Nostril Cycling [BHF3] BHT UNUSUAL SENSES AND FACULTIES BHT1 Telescopic Vision BHT2 Moonblindness BHT3 Blindsight BHT4 A TV-Snow Visual Phenomenon BHT5 Color-Vision Deficiency of Ancient Peoples BHT6 Color Sensitivity Correlated with Lunar Phase BHT7 Anomalies in the Evolution of Color Vision BHT8 Dermo-Optical Perception [PHD] BHT9 Visual Phenomena from the Passage of High-Energy Particles through the Eyes BHT10 Facial Vision or Human Echo Ranging BHT11 Our Sound-Suppression Faculty BHT12 Electromagnetic Radiation Perceived as Sound BHT13 Hearing under Anesthesia BHT14 Variability and Sophistication of Human Tone Perception BHT15 Anomalous Communication in Children BHT16 Discontinuity in the Evolution of Communication BHT17 The Ability to Sense and/or Detect Magnetic Fields BHT18 Human ...
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