How long until the sun cannot sustain human life on earth? The sun will last, at its current brightness for 9 billion more years How long until the sun gets burned down to the point where it cannot sustain life on Earth anymore? Updated: I am more concer
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
Why does the Sun rotate? - Physics Stack Exchange The Sun was certainly much faster rotating in the past When it was 100 million years old it likely had a rotation period somewhere between 0 5 and 5 days (observed in solar analogues at that age)
Why do we actually see the sun? - Physics Stack Exchange The Sun is an incoherent source, meaning the photons coming from its surface really are independent in phase, so the above calculations are appropriate This is in contrast to a laser, where the phases have a very tight relation to one another (they are all the same)
everyday life - Why do sunbeams diverge even though the sun is much . . . The Sun is very far away and the beams are pretty much parallel, but they're pointing towards you, and perspective makes them appear to converge towards the vanishing point - which in this case is the Sun's location in the sky
Why is Suns energy entropy low on Earth? - Physics Stack Exchange 3 Warning I don't have a physics background, having said that I was recently looking into the sun's radiation energy entropy and I had a couple of questions So it is said that we can utilize the energy from the sun on Earth because of its low entropy