Science Frontiers
The Unusual & Unexplained

Strange Science * Bizarre Biophysics * Anomalous astronomy
From the pages of the World's Scientific Journals

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About Science Frontiers

Science Frontiers is the bimonthly newsletter providing digests of reports that describe scientific anomalies; that is, those observations and facts that challenge prevailing scientific paradigms. Over 2000 Science Frontiers digests have been published since 1976.

These 2,000+ digests represent only the tip of the proverbial iceberg. The Sourcebook Project, which publishes Science Frontiers, also publishes the Catalog of Anomalies, which delves far more deeply into anomalistics and now extends to sixteen volumes, and covers dozens of disciplines.

Over 14,000 volumes of science journals, including all issues of Nature and Science have been examined for reports on anomalies. In this context, the newsletter Science Frontiers is the appetizer and the Catalog of Anomalies is the main course.


Subscriptions to the Science Frontiers newsletter are no longer available.

Compilations of back issues can be found in Science Frontiers: The Book, and original and more detailed reports in the The Sourcebook Project series of books.

The publisher

Please note that the publisher has now closed, and can not be contacted.


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Search results for: lenses

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... Science Frontiers ONLINE No. 53: Sep-Oct 1987 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Lenses In Antiquity The ancient Greeks seem to have thought of just about everything. True, they didn't conceive of silicon chips or H-bombs, but they did know rudimentary optics. Excavations down the years have yielded hundreds of lenses ground from quartz crystals. (Later, the Romans used glass.) Many of these early lenses were articles of high craftsmanship, being accurately spherical and wellpolished. Lathes were evidently available for grinding the rock crystal into appropriate shapes. Some ancient lenses had holes drilled through them, possibly so that they could be carried around the neck on cords. These seem to have been used for kindling fires. Most lenses, though, were probably magnifiers for authenticating seals and for carving gems. (Sines, George, and Sakellarakis, Yannis A.; "Lenses in Antiquity," American Journal of Archaeology, 91:191, 1987.) Comment. We wonder if any ancient Greeks ever put two of these lenses together to make a telescope. Such a tan dem arrangement of lenses seems such a natural experiment; i.e ., if one is good, two will be better! The ancients probably ground lenses with the aid of bow-driven spindles. From Science Frontiers #53, SEP-OCT 1987 . 1987-2000 William R. Corliss ...
Terms matched: 1  -  Score: 162  -  15 May 2017  -  URL: /sf053/sf053a02.htm
... 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 Porpoise Stun Gun Just about everyone knows that some whales and porpoises have oil/wax-filled sound lenses in their foreheads. These biological lenses focus clicks and other sounds sonar-fashion ahead of the swimming animal, which then listens for echoes from prey and other targets. But what if these bursts of sound could be made very powerful -- could they be employed to stun and disorient prey? Bits of evidence are accumulating to support the theory that some whales and porpoises actually have acoustic stun guns in their foreheads. First, there are visual observations of fish being hunted by whales and porpoises suddenly giving up flight, becoming passive, and almost asking to be snapped up by their pursuers. Second, the stomachs of whales often contain much faster and more mobile prey -- often without any teeth marks. Finally, bottlenose dolphins are known to have the capability of producing bursts of sound five orders of magnitude more intense than their usual navigating clicks. This is more than enough to kill small fish. (Norris, Kenneth S., and Mohl, Bertel; "Can Odontocetes Debilitate Prey with Sound?" American Naturalist, 122:85, 1983.) Comment. Here is another instance of the "problem of perfection." An existing organ of great complexity seems utterly useless of only fractionally developed. One would think that the complicated sound lenses, the muscular sound-generating tissues, and their containing structures would ...
Terms matched: 1  -  Score: 42  -  15 May 2017  -  URL: /sf029/sf029p05.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 Celestial mirages?Those mysterious giant blue arcs mentioned above have at least two explanations. The less-favored states that the arcs are formed when a spherical light pulse from a briefly flaring quasar encounters a plane of gas and dust. This matter scatters the light, making it visible to us as a huge arc. The preferred model employs gravitational lensing. Here, the arcs are simply distorted images -- mirages, if you want -- of distant galaxies. (Two of the many reports on this subject are: Waldrop, M. Mitchell; "The Giant Arcs Are Gravitational Mirages," Science, 238:1351, 1987; and Anonymous; "Giant Arcs: Light Echoes or Lensed Galaxies?" Sky and Telescope, 75:7 , 1988.) Comment. A bit of background: according to Einstein, the presence of matter can bend light rays, just as our atmosphere does when mirages are created by refraction. Gravitational mirages of celestial objects are thus predicted by Relativity. From Science Frontiers #56, MAR-APR 1988 . 1988-2000 William R. Corliss ...
Terms matched: 1  -  Score: 29  -  15 May 2017  -  URL: /sf056/sf056a03.htm
... Science Frontiers ONLINE No. 53: Sep-Oct 1987 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology A TSUNAMI AND A PERUVIAN CULTURAL GLITCH Lenses in antiquity Strange craters Astronomy Hypnotic mars The perseus flasher: mystery solved! Three planetary notes Biology Has the second law been repealed? Human direction finding Magnetic "dead" reckoning Another tale of ogopogo Geology Meteor-impact winters, magnetic field reversals and tektites Tektite-like objects at lonar crater, india Geophysics Are the soviet plumes only orographic clouds? Lightning triggered from the magnetosphere Psychology Magnetic fields and the imagination Men in black (mibs) Folie a famille A "MAGICAL GENIUS" Pi and ramanajan A MODEST EXAMPLE OF THE LONG ARM OF SYNCHRONICITY ...
Terms matched: 1  -  Score: 15  -  15 May 2017  -  URL: /sf053/index.htm
... into the rain forest occur in both phases. Perhaps more remarkable is the systematic orientation of the raids in the stationary phase. These raids are separated by an average 123 , as diagrammed. This scattering allows time for new prey to enter the previously raided areas. But how does the colony determine direction in the dense rain forest? Probably from polarized sinlight, thinks Franks. But here we have a problem: each army ant, instead of having multi faceted compound eyes like most insects, has just a single facet in each eye. "The mystery is how the colony can navigate with each of its workers having such rudimentary eyesight. In my wildest dreams, I imagine that the whole swarm behaves like a huge compound eye, with each of the ants in the swarm front contributing two lenses to a 10- or 20-m wide 'eye' with hundreds of thousands of facets." (Franks, Nigel R.; "Army Ants: A Collective Intelligence," American Scientist, 77:139, 1989.) Comment. By analogy, the human body is a colony of individual cells, most of which are specialized in some way. Individual human cells can be grown alone, but they are as directionless as the 100 ants on the flat surface. From Science Frontiers #66, NOV-DEC 1989 . 1989-2000 William R. Corliss ...
Terms matched: 1  -  Score: 13  -  15 May 2017  -  URL: /sf066/sf066b07.htm
... of Unusual Mental Phenomena Out of print Hardcover, 754 pages, Apr 1982, ISBN: 0-915554-08-9 , 9.5 x 6.5 inches Archeology Handbook For a full list of archeology subjects, see here . Ancient Man: A Handbook of Puzzling Artifacts Sorry: Out of Print. No longer available. Now in its third printiing, our archeology Handbook reproduces hundreds of items from the difficult-to-obtain archeological literature. Typical subjects covered: Ancient Florida canals * The Maltese "cart tracks" * New England earthworks * Ancient coins in America * Ancient Greek analog computer * Inscriptions and tablets in unexpected places * The great ruins at Tiahuanaco * Zimbabwe and Dhlo-dhlo * Huge spheres in Costa Rica * The Great Wall of Peru * Ancient batteries and lenses * Mysterious walls everywhere * Pacific megalithicsites * European stone circles and forts * [Picture caption: Scottish carved stones from circa 1000 B.C . Comments from reviews ". .. a useful reference in undergraduate, public, and high school libraries", Booklist. 792 pages, hardcover, $23.95, 240 illustrations, index. 1978 references. LC 77-99243, ISBN 915554-03-8 , 6x9forrnat. Ancient Infrastructure: Remarkable Roads, Mines, Walls, Mounds, Stone Circles Sorry, Out of print Ancient people raised standing stones on all continents save Antarctica. The dug canals 50 miles long and erected even longer walls. Gleaned from hundreds of volumes of Science, Nature, Antiquity and other science journals, this massive collection of archeological puzzles will keep ...
Terms matched: 1  -  Score: 6  -  10 Oct 2021  -  URL: /sourcebk.htm
... in America Neolithic Pottery Ancient Pottery, Australia China in Egyptian Tombs China in New World/Africa Egypt in Australia Mohenjo-Daro in Mexico Japan in Ecuador (Valdivia/ Jomon) Llamas with 5 Toes on South American pottery Amphorae, Honduras, Bolivia Burial Jars Mohenjo-Daro Pottery Fused into Lumps Greek Lamp in New England Anforetas, ME MMS STONE ARTIFACTS Mortars in the Auriferous Gravels Stone Collars and Yokes Cogged Stones Chinese Anchor Stones Jade Artifacts in New World Plain Stone Spheres Discoidal Stones Bannerstones/gorgets Loess Balls Kimmeridge Coal Money Sandstone Discs in Kivas Block Grinders, HI Disk Factory Jade in New World Mortars on Continental Shelf Polynesia in New World Stone and Jade Telescopes [MGT] MMT HIGH TECHNOLOGY Electric Battery Greek Computer Balances Olmec Lodestone Ccompass Plumbing Radioactivity in Bible Microscopic Engraving Surgical Instruments Optical Devices (Lenses) Egyptian Electricity Clocks Musical Instruments Mastic and Adhesives Glass Slabs and Floors Diamond Drilling Manna Maker Shell Etching Egyptian Glider Stone Telescopes [MMS] Metal Plating [MMM] Cement Jade Astronomical Instruments [MMS] Earthquake Detector Mallia Table Olmec Mirrors Inca abacus Aluminum Buckle, China [MMM] Mayan Dentistry Ancient False Teeth Paints, Cosmetics Wine and Beer Chewing Gum Atlatl Treppaning [MAF] Cement Pyramids Aluminum and Platinum [MMM] Plating, Welding, Gilding Soldering [MMM] Metallurgy [MMM] Vimanas (Flying Machines [MMM] MMW WOODEN ARTIFACTS Ancient Charcoal Wooden Implements Cedar Collars Ancient Plank Eskimo Goggles Precocious Wooden Spears Santa Rosa Hearths Homo erectus and Fire MS ENGINEERING STRUCTURES ANCIENT ASTRONOMICAL OBSERVATORIES Notable Observatory Buildings The Great Pyramid as an Astronomical Observatory MSB MISCELLANEOUS ANCIENT STRUCTURES MSB1 Miscellanous ancient structures: North America ...
Terms matched: 1  -  Score: 5  -  15 May 2017  -  URL: /cat-arch.htm

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