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 …
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 …
What would happen if Jupiter collided with the Sun?
Apr 27, 2018 · However, the Sun will accrete $\sim 10^{42}\ \mathrm{kg\ m^2\ s^{-1}}$ of angular momentum, which is comparable to its current angular momentum. The accretion of Jupiter in …
How is Earth protected from the gamma rays generated by the Sun?
The Sun does, however, emit X-rays, ultraviolet, visible light, infrared, and even radio waves not to mention neutrinos. Gamma ray photons produced by fission make their arduous journey to …
How is distance between sun and earth calculated?
Apr 27, 2015 · 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 …
Mar 27, 2022 · 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 …
thermodynamics - Black and white matters. But why and how?
Jul 3, 2014 · The visible has about half of the energy coming from the sun on the surface, as seen in the link. So a metal door in the sun will transfer the heat of the visible spectrum to the …
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 …
orbital motion - What did general relativity clarify about Mercury ...
A nonrotating Sun would also beget the observed anomalous precession, whose non-Newtonian component almost wholly arises from the inverse cubic term in the effective potential coming …
Equation of Earth's Orbit around Sun (ellipse)
The sun is one of the two foci. For the Earth, the perihelion is 147.1 million km and the aphelion is 152.1 million km. These two distances help identify the location of the sun on the major axis of …