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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
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
How to get 3D coordinates (XYZ) of the sun given Azimuth and altitude . . . 0 I want to create an Augmented Reality (AR) application to show the sun's position where I need the 3D (XYZ) coordinates to plot in Augmented Reality (AR) Main question: I need to calculate the 3D coordinates (XYZ) from the sun Azimuth and altitude elevation Look at the image
orbital motion - Finding how much time it takes for a complete Earth . . . Can you elaborate on how precession changes how long it takes the Earth to complete an orbit around the sun? I am having a hard time seeing how a wobbly axis could either change the length of a day or the speed at which the Earth orbits the sun - and 20+ minutes year seems like a big difference
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
What is actually meant by sun set and sun rise times, when taking . . . If this is the case, then when we read things like what time sun sets and rises on websites, books, calendars, other official times, et al… does that mean when we see for example ‘sun set at 18:35’ is the time denoting the actual sun set taking into account of the mirage or what is visible to us
What determines the surface temperature of the sun? 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 surface temperature of the