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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 ...
Today, amateur astronomers’ work is getting so sophisticated, many in the field have a hard time calling them amateurs. “We call ourselves ‘small telescope scientists,’ ” said Sims.
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 ...
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Entoptic phenomena (from Ancient Greek ἐντός (entós) 'within' and ὀπτικός (optikós) 'visual') are visual effects whose source is within the human eye itself. (Occasionally, these are called entopic phenomena, which is probably a typographical mistake.) In Helmholtz 's words: "Under suitable conditions light falling on the eye ...
In the 30 years from 1993 to 2023, the S&P 500 ( ^GSPC) had a compound annual growth rate (CAGR) of 7.8%. Reinvesting dividends would have boosted that return to 9.9%, according to Yahoo Finance ...
When You Close Your Eyes. " When You Close Your Eyes " is a song by American rock band Night Ranger from their 1983 album Midnight Madness. [ 4] In the U.S., the single reached number 14 on the Billboard Hot 100 and number 7 on the Billboard Hot Mainstream Rock Tracks chart. [ 5][ 6] Ultimate Classic Rock ranked "When You Close Your Eyes" at ...
X-ray optics. X-ray optics is the branch of optics that manipulates X-rays instead of visible light. It deals with focusing and other ways of manipulating the X-ray beams for research techniques such as X-ray diffraction, X-ray crystallography, X-ray fluorescence, small-angle X-ray scattering, X-ray microscopy, X-ray phase-contrast imaging, and ...