everyday life - Why do sunbeams diverge even though the sun is …
Dec 26, 2014 · The same applies to the beams of light above them. The Sun is very far away and the beams are pretty much parallel, but they're pointing towards you, and perspective makes …
How much lux does the Sun emit? - Physics Stack Exchange
When you look 'at the world' (i.e. to the horizon) on a clear day, unlesss the sun is at a very low angle, the surface of your eye is not illuminated directly by the sun, only reflected sunlight from …
How is distance between sun and earth calculated?
Feb 15, 2011 · Another way of calculating the earth - sun distance is to look at the centrifugal and the gravitational force. This solution assumes that one already knows the mass of the sun, but …
sun - Why is sunlight spectrum continuous? - Physics Stack …
The continuous spectrum of the visible photosphere of the Sun is attributable to the radiative equilibrium of the $\mathrm{H}^{-}$ ion. This has been recognised for at least 80 years ( Wildt …
orbital motion - Earth-Sun distance on a given day of the year ...
Apr 23, 2015 · But if you want to calculate more accurately the distance between the Earth and the Sun at any given epoch, you need to look up for Kepler's Equation. This can be obtained …
How does the Earth's orbit change as the Sun decreases in mass?
Mar 10, 2020 · Now the Sun loses a small amount of mass. The Earth is still traveling at the same velocity, and requires the same centripetal force to maintain the same circular orbit. …
What is the simplest way to prove that Earth orbits the Sun?
Apr 17, 2015 · If we assume the Sun orbits the Earth, the math says that the Sun should be much less massive than the Earth. If we assume the Earth orbits the Sun, the opposite is true. Either …
How hot can metal get in sunlight? - Physics Stack Exchange
May 31, 2015 · If the building is located in Hammerfest, Norway the metal might get warm to the touch. If it's on the sun-facing side in Las Vegas you may find it gets hot enough to cause …
How can sunlight be white , but pictures of the sun be orange?
The Sun is white, but the reason why it is white is because your brain adjusts the white balance to make the totality of all the ambient light illuminating the objects you see, white. Now, the Sun …
Why does the Sun always rise in the East? - Physics Stack Exchange
Nov 26, 2014 · At noon, the Sun is above the observer, and east points backward, against the orbital motion. At sunset, east points away of the Sun, because the planet made a half …