sort by best latest
Best Answer John Parks says
Yes sorry I did mean 8 Minutes and not seconds. A senior moment I'm afraid.
Tim Mitchell says
So, then there is not matter unless existence. In the case the sun becomes non-existent then the laws of physics would not apply as there would not be anything to act upon, unless something remained?
- See all 2 commentsHide extra comments
Philip Cooper says
I am not sure that the Earth will also move at the same time, as you say. It is reasonable to expect that it would be almost at the same time, but I am not sure if we can say so precisely. I think that this is an open problem in physics...
flysky : it is an assumption of course... but the reason i said it would move right away is because the size of the sun in proportion to the earth... I was thinking of the concept of magnetism while stating my assumption. A little delay : yes.
We make an assumption: all atoms are interconnected. There is permanent tension b/w the Sun and the Earth and b/w the Earth and you. We call this tension ‘gravity’. We make the Sun disappear. The Earth HAD BETTER fly away INSTANTANEOUSLY!
- See all 4 commentsHide extra comments
Gravity is not a force. Gravity is a tension, and tension is NOT a force. Stretch a rubber band and hold. Feel the tension. There is no motion. If someone cuts the rubber band, the tension HAD BETTER disappear INSTANTANEOUSLY! It won't take 8 mins!
Actually the speed of gravity is unknown. We are working hard to assign a value to "gravity" but it has proven elusive to all attempts. We just don't know enough, with our current physics, to solve the "mystery" of gravity.....yet!