Recent content by liron

Homework Statement A distant observer is at rest relative to a spherical mass and at a distance where the effects of gravity are negligible. The distant observer sends a photon radially towards the mass. At the distant observer, the photon's frequency is f. What is the momentum relative to...

Homework Statement An object falls radially towards a non rotating black hole from infinity (i.e. the velocity is the same as the escape velocity except negative). The black hole has a Schwarzschild radius of Rs = 2GM/c2 where G is the gravitational constant, M is the black hole's mass and c...

Thanks to all the replies. In answer to Simon Bridge's question, I read about spaghettification inside a black hole in a Wikipedia article on Spaghettification. I read and heard about space and time being reversed in an online course on general relativity from Stanford University and...

Hi, I've heard and read that if someone was to fall towards a black hole, say feet first, they would undergo spaghettification at a certain distance, as the gravity at their feet would be much greater than the gravity at their head, and their body wouldn't be able to reisist the pulling effect...