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How hot can metal get in sunlight? - Physics Stack Exchange 31 May 2015 · 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 …
optics - If the sea surface were absolutely calm should the Sun ... 18 Jan 2021 · On the other hand, if the water were completely still, with a smooth and horizontal surface, then the sun glitter ribbon would be gone, and you would just see a direct mirror …
sun - Nuclear fusion - Hydrogen isotopes - Physics Stack Exchange 15 Dec 2014 · 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 …
How is distance between sun and earth calculated? 15 Feb 2011 · How has the distance between sun and earth been calculated? Also what is the size of the sun?
temperature - How does water evaporate if it doesn't boil? I don't the the rate of evaporation depends upon the temperature of the overlying air, i.e. it is a function of the thermodynamic processes withing the liquid (or solid, like in ann's example). …
Calculating the Earth-Sun distance - Physics Stack Exchange 2 Oct 2018 · Using just the facts that the period of earth around the sun is 1 year. that the distance of 1 degree of latitude on earth is 100km . that the acceleration due to gravity on earth is …
Black and white matters. But why and how? - Physics Stack … 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 …
Why does the Sun always rise in the East? - Physics Stack … 26 Nov 2014 · The Sun does not rise, it is the horizon that goes down. You say that Sun rises in the East (with a certain degree of oscillations due to the tilt of the axis) just because the Earth …
How does the Earth's orbit change as the Sun decreases in mass? 10 Mar 2020 · It continues along this elliptical path, climbing further out from the Sun towards aphelion, and slowing down as it climbs. Of course, in reality, the Sun's mass loss is …
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