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Cosmic ray visual phenomena, or light flashes ( LF ), also known as Astronaut's Eye, are spontaneous flashes of light visually perceived by some astronauts outside the magnetosphere of the Earth, such as during the Apollo program. While LF may be the result of actual photons of visible light being sensed by the retina, [1] the LF discussed here ...
Photopsia. This is an approximation of the zig-zag visual of a scintillating scotoma as a migraine aura. It moves and vibrates, expanding and slowly fading away over the course of about 20 minutes. Migraine with aura, which includes photopsia 39% of the time, typically lasts 10 to 20 minutes and often is followed by a headache.
Health threats from cosmic rays are the dangers posed by cosmic rays to astronauts on interplanetary missions or any missions that venture through the Van-Allen Belts or outside the Earth's magnetosphere. [ 1][ 2] They are one of the greatest barriers standing in the way of plans for interplanetary travel by crewed spacecraft, [ 3][ 4][ 5] but ...
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You're about to get a chance very soon. Noah Haggerty. July 29, 2024 at 3:00 AM. Bob Stephens, of Rancho Cucamonga, is among the many amateur astronomers who are eagerly awaiting the appearance of ...
This odd-eyed cat displays red-eye effect of its tapetum lucidum only in its blue eye. In flash photography the light of the flash occurs too fast for the pupil to close, so much of the very bright light from the flash passes into the eye through the pupil, reflects off the fundus at the back of the eyeball and out through the pupil. The camera ...
We've all grown up thinking that sitting too close to the television is damaging to our eyes ... but that might not be the case. Technology spawns lots of confusion ... and a few affectionately ...
One Hour Photo is a 2002 American psychological thriller film [2] [3] written and directed by Mark Romanek and starring Robin Williams, Connie Nielsen, Michael Vartan, Gary Cole and Eriq La Salle. The film was produced by Catch 23 Entertainment, Killer Films and John Wells Productions and released by Fox Searchlight Pictures .