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- everyday life - Why do sunbeams diverge even though the sun is much . . .
Consider this picture of sun beams streaming onto the valley through the clouds Given that the valley is only (at a guess) 3km wide, with simple trigonometry and the angles of the beams, this give
- 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
- What is the simplest way to prove that Earth orbits the Sun?
Assume you're talking to someone ignorant of the basic facts of astronomy How would you prove to them that Earth orbits the Sun? Similarly, how would you prove to them that the Moon orbits Earth?
- How is distance between sun and earth calculated?
How has the distance between sun and earth been calculated? Also what is the size of the sun?
- What would happen if Jupiter collided with the Sun?
This question is inspired by a similar one asked on Quora Let's say a wizard magicked Jupiter into the Sun, with or without high velocity What happens? The Quora question has two completely oppo
- 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
- 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
- What does the Moons orbit around the Sun look like?
Here are some things I'm assuming when trying to tackle this question: The Moon's orbit must be concave toward the Sun The Moon speeds up as it goes toward the Sun, and it slows down as it moves away For an observer on the Earth, the Moon appears to orbit the Earth roughly 13 13 times a year The Earth, the Moon, and the Sun remain in the
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