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Rayleigh scattering causes the blue color of the daytime sky and the reddening of the Sun at sunset. Rayleigh scattering ( / ˈreɪli / RAY-lee) is the predominantly elastic scattering of light, or other electromagnetic radiation, by particles with a size much smaller than the wavelength of the radiation. For light frequencies well below the ...
Limiting magnitude. Visual effect of night sky's brightness. In astronomy, limiting magnitude is the faintest apparent magnitude of a celestial body that is detectable or detected by a given instrument. [ 1] In some cases, limiting magnitude refers to the upper threshold of detection. In more formal uses, limiting magnitude is specified along ...
Long-term sunlight exposure is known to be associated with the development of some types of skin cancer, skin aging, immune suppression, eye diseases such as cataracts. [ 14 ] [ 15 ] Since UV rays, and therefore sunlight and sunlamps, have both health benefits and risks, a number of public health organizations state that there needs to be a ...
Anthony Cuthbertson,Graeme Massie and Vishwam Sankaran. February 2, 2023 at 8:18 PM. A green comet is flying past Earth for the first time in 50,000 years, offering skygazers a one-off opportunity ...
Computer vision syndrome. Computer vision syndrome ( CVS) is a condition resulting from focusing the eyes on a computer or other display device for protracted, uninterrupted periods of time and the eye's muscles being unable to recover from the constant tension required to maintain focus on a close object.
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Like a Version is a weekly segment on Australian youth radio station Triple J.It involves Australian and international artists playing two songs live in the Triple J studio, one of their own songs (an "original") and then a cover version, hence the name of the segment.