|
- How is distance between sun and earth calculated?
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 threads, please
- 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 angular size as the moon) and most of the brightness seen in the direction of the sun is from small deflection rayleigh scattering
- Why does Sun appear white at noon? - Physics Stack Exchange
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 equal proportions
- Why does the Sun always rise in the East? - Physics Stack Exchange
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 spins from West to East The revolution affects the difference between sidereal time and solar time, and makes the solar day $\approx 4$ minutes longer If the Earth spinned in the opposite direction the Sun would
- 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
- orbital motion - Finding how much time it takes for a complete Earth . . .
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 could the first physicists guess that a revolution of the Earth around the Sun takes 365 25xxx days?
- How come the Suns gravity can hold distant planets in orbit, but . . .
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 acceleration You ask "how come the Sun is strong enough to keep the distant planets in orbit but I don't fall into it?"
- optics - If the sea surface were absolutely calm should the Sun . . .
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 image of the Sun
|
|
|