7 results found containing all search terms.
... Science Frontiers ONLINE No. 123: May-Jun 1999 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Eclipse Shadow Bands E. Strach had the good fortune to have camcordered those elusive eclipse shadow bands that flit across the ground just before and after total solar eclipses. The time was February 26, 1998; the place, Knip Beach, Curaco. Strach had first laid out a 53-centimeter-diameter white screen on the ground. He pointed his camcorder at the screen ... pressed the ON switch 4 minutes before second contact. Playing back his recording, he was not a little surprised to find he had an excellent record of the curious parade of the hard-to photograph dark bands. "They were clearly seen for 32 seconds before the second contact and a little fainter for 27 seconds after totality. They moved rapidly across the screen from E to W before totality and from NNE to SSW after 3rd contact. Slow motion studies of the video show occasional merging of the bands and at times they ... to move in opposite directions -- probably a stroboscopic effect." The widths of the bands varied from 2.36 to 6.63 centimeters. (Strach, Eric; "Shadow Bands Recorded at February 26 Eclipse," British Astro nomical Association, Journal, vol. 108, 1998. Comment. Theorists have long been challenged by these ghostly, fleeting shadows. Their widths change; their directions and speeds vary; they come in different colors; sometimes more than one set of bands appear; giant bands have been ...
Terms matched: 3 - Score: 5155 - 15 May 2017 - URL: /sf123/sf123p04.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 Eclipse shadow-band anomalies Shadow bands moving across the face of a house during the total eclipse of December 22, 1870. J.L . Codona, in a long article in Sky and Telescope, described eclipse shadow bands in these words: "There mysterious gray ripples are sometimes seen flitting over the ground within a minute or two of to tality. The bands are ... faint and jumbled; but as totality approaches, 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 ... 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, ...
Terms matched: 3 - Score: 2911 - 15 May 2017 - URL: /sf077/sf077a04.htm
... Science Frontiers ONLINE No. 123: May-Jun 1999 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Caves as musical instruments Sophisticated chemistry in ancient egypt Heads down! Out-henging stonehenge Astronomy Eclipse shadow bands Moonstone in orbit? The storm-swept cosmos Biology Nanobes Strange appetites Flash fish Throwing sand in the gears of molecular clocks Geology Copper pseudomorphs Geophysics Mysterious mountain deaths Puzzling shadows Psychology Phantoms of the brain Focused group energy (fge) Megamemories Unclassified They went a byte ... far! ...
Terms matched: 3 - Score: 1040 - 15 May 2017 - URL: /sf123/index.htm
... GER14 Radar Dot Angels GER15 Radar Ring and Line Angels GER16 Radar Ghosts Mexico's Zone of Silence Infrared Angels Extremely-Low-Frequency (ELF) Phenomena Effect of Low-Pressure Areas upon Shortwave Propagation Unidentified Atmospheric Radio Bursts Detected by Satellites GES SHADOW PHENOMENA GES1 Eclipse Shadow Bands GES2 Moving Shadow Bands in the Atmosphere GES3 Colored Shadows GES4 Shadow Bands Seen through the Telescope GES5 Unusual Shadows Observed during Eclipses GES6 Non-Eclipse Shadow Bands GES7 Persistent or "Living" Shadows GES8 Curious Mountain Shadows Curious Shadows of Condensation Trails GEZ ANOMALOUS ... 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 Rays at Sunset and Sunrise GEL3 Color Phenomena and the Earth's Shadow on the Sky GEL4 Abnormal Refraction Phenomena with Astronomical Objects.. ... 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 Rays at Sunset and Sunrise GEL3 ...
Terms matched: 3 - Score: 1037 - 15 May 2017 - URL: /cat-geop.htm
... Frontiers ONLINE No. 77: Sep-Oct 1991 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology PLIOCENE SCULPTURES OR FREAKS OF NATURE? A PAPER TRAIL FROM ASIA TO THE AMERICAS Astronomy Mercury: the impossible planet Eclipse shadow-band anomalies Biology Supernova theory exploded NO UNKNOWN MONSTERS IN THOSE FIJI UNDERWATER CAVES: NEVERTHELESS, THE MYSTERY DEEPENS DO BIRDS USE GENETIC MAPS DURING MIGRATION? Cooler heads, bigger brains? The aye-aye, a percussive forager identical Geology VALLEYS OF DEATH ... ELEPHANT GRAVEYARDS Anthracite man? METHANE HYDRATE: PAST FRIEND OR FUTURE FOE? The gruyerizaton of switzerland faulting Geophysics CROP CIRCLES: DAISY PATTERNS AND A RED BALL OF LIGHT Hovering ball of fire SOME OLD GEYSERS ARE NOT SO FAITHFUL WATER'S MEMORY OR BENVENISTE STRIKES BACK Physics Drip, drop, drup, dr** ...
Terms matched: 3 - Score: 1021 - 15 May 2017 - URL: /sf077/index.htm
... 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'S ORBITAL ANOMALIES ALB1 Earth-Moon Instability ALB2 Discrepancies in the Moon's Ephemeris ALB3 Nongravitational Forces and ... 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 ... , 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 ...
Terms matched: 3 - Score: 930 - 15 May 2017 - URL: /cat-astr.htm
... startles Alpine climbers! Typical subjects covered: Rainbows with offset white arcs * Sandbows * Offset and skewed halos * The Brocken Specter * The Alpine Glow * Unexplained features of the green flash at sunset *Fata Morgana * Telescopic mirages * Long-delayed radio echos * Eclipse shadow bands * Geomagnetic effects of meteors * Intersecting rainbows * The Krakatoa sunsets * Kaleidoscopic suns [Picture caption: Shadow of Adam's Peak with glory and radial rays] Comments from reviews: ". .. all in all it's a fascinating ... ", Sky And Telescope. ". .. any student of the physical sciences will find it fascinating", Science Books. 244 pages, hardcover, $16.95, 111 illustrations, 5 indexes 1984. 569 references, LC 84-50491, ISBN 915554-12-7 , 7x10 format. Remarkable Luminous Phenomena in Nature: A Catalog of Geophysical Anomalies Sorry: Out of Print. No longer available. This volume is a major expansion of the first catalog in this series, Lightning, Auroras, Nocturnal ... , first published in 1982. So much additional information on luminous phenomena has been collected, that this new edition is almost twice the size of the 1982, that a new title seems appropriate. Dozens of new phenomena are recognized, and we have added a great many eye-witness account (mostly from science journals) of low-level auroras, ball lightning, earthquake lights, marine wheels, luminous phenomena above thunderclouds, and, especially, lengthy coverages of low-level nocturnal lights (Marfa, Brown Moutnain, Min ...
Terms matched: 3 - Score: 863 - 10 Oct 2021 - URL: /sourcebk.htm
