How is distance between sun and earth calculated?
Feb 15, 2011 · Do you want to know both how the Earth-sun distance is measured and how the speed of light is measured? Those are completely different things. As I asked before, separate …
Why does the Sun "shine brighter" some days? [duplicate]
1) The sun seems brighter (more dazzling) if there is more scattering in the atmosphere. The sun would actually look very small to us in the sky if there were no atmosphere (it's the same …
Why does Sun appear white at noon? - Physics Stack Exchange
Sep 6, 2024 · The Sun appears white at noon because the sunlight reaching the observer maintains its full spectral composition, meaning that all visible wavelengths arrive in nearly …
Why does the Sun always rise in the East? - Physics Stack Exchange
Nov 26, 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 …
Why do we say that the Earth moves around the Sun?
3 The sun, moon, earth (and so on) all move around each other. The reason we say the earth moves around the sun is because the effects are more visible on a macro scale, and easier to …
orbital motion - Finding how much time it takes for a complete …
Nov 29, 2019 · 21 Long story short, my brother made a joke about how stupid it is to celebrate the Earth making one "trip" around the Sun: New Year's Eve. So I got curious and was wondering: …
How come the Sun's gravity can hold distant planets in orbit, but ...
Nov 29, 2016 · First, we should speak of acceleration rather than force, because like I said earlier all objects at a given distance from the Sun experience different forces but the same …
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 …
What determines the surface temperature of the sun?
Jun 20, 2018 · The core temperature of the sun is on the order of 15 million degrees kelvin while its surface temperature is around 6000k. What are the main factors which determine the …
sun - Why is sunlight spectrum continuous? - Physics Stack …
The sun's spectrum is very complex, and indeed there are a lot of "lines"—both light and dark (emission and absorption)—amidst a sea of what looks to be continuous frequencies.