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How much lux does the Sun emit? - Physics Stack Exchange I want to know how much lux the sun emits on a bright day - I don't mean when one stares directly at the sun, but rather when one walks casually outside when the sun is shinning brightly Now the
Black and white matters. But why and how? - Physics Stack Exchange So a metal door in the sun will transfer the heat of the visible spectrum to the interior if painted black, will reflect it back and keep the interior cooler if painted white It is a good reason for painting roofs and walls white in hot countries A white car is also better in hot countries for this reason
sun - Nuclear fusion - Hydrogen isotopes - Physics Stack Exchange What is the isotope composition of hydrogen atoms in the sun? Are the ratios of protium:deuterium:tritium similar to those we find on earth? What does the nuclear fusion of hydrogen atoms in the sun
Review: Lisa @ Sun Spa | AMP Reviews Title: Review: Lisa @ Sun Spa Date: Apr 24, 2025 Phone: 571-638-1888 City: Vienna State: VA Location: By Chans Chinese House Fee Tip (if applicable) 80+160 Nationality: Chinese Age Estimate: 25 Physical Description: 5’1”-5’3”, maybe 115-120lbs, C cup, mid back long hair, shaved
How hot can metal get in sunlight? - Physics Stack Exchange I quite liked this one [archived] describing measurements on cars It shows that things left in the sun can get significantly hotter than the surrounding air (although there are some issues with the method used, the conclusions are mostly valid), One final note - how hot things are is not the same as how hot they seem to be
How is Earth protected from the gamma rays generated by the Sun? The Sun is generating energy by nuclear fusion This nuclear fusion will emit energy in the form of gamma rays Normally, the earth's ozone layer filters the ultraviolet radiation while the earth's
Nuclear fission in the Sun - Physics Stack Exchange The Sun's energy comes primarily from fusion of light elements in its core It is estimated that a very small fraction of mass of the Sun (~$10^{-12}$ times the abundance of hydrogen) is uranium (b
photons - Light formed by the sun? - Physics Stack Exchange The photons take thousands of years to "fight" their way to the surface of the Sun, but then escape into space as visible or near visible photons at the speed of light I am really confused about how the sun produces light I understand that through nuclear fusion, energy is formed, but isn't this energy in the form of thermal and gamma photons?