This is too complicated for me. I did Physics at University but it still hurt my heard when you get to this part of it!
Hare you read the “Uncle Albert” books by Russell Stannard. I htihnk they were written for 11-12 year olds, but our lecturer had them on our reading list at university too!
Time and space and Uncle Albert
Black Holes and Uncle Albert
Uncle Albert and the Quantum Quest
Might be woth asking for them for Christmas? They’re really good fun and explain it all really well, and you can tell mum and dad that they are purely educcational too!
Hi
So it’s not exactly that there is not time in the middle of a black hole. In fact it is because we are not good enough in mathematics that we come to this conclusion. The idea is that if we apply the mathematics “carelessly” around a black hole then we find some weird things. Namely, the space becomes time and times becomes space. Now that doesn’t make much sense, so what cosmologists do in effect is what we call a “transformation of coordinates”. It’s a big word to say that we make some change in the way we define space and time so that we can still do physics inside the black hole.
To be honest nobody really knows what is going down there.
@Pierre but then why would we looking at an object being sucked into a black hole being very slow/ not moving at all, but the object is actually being pulled in faster than the speed of light?
@Kate @Pierre thanks for answering!
Hi
Yes so it is a little more complicated than this actually. Basically light bends around massive object, just like a ball falls in a gravitational field. If you do this basically you add a component of to the velocity of light, and then you obtain that light is faster than the speed of light! So to come around this, time has to go “slower” so that the light is always at the same speed. This is why time is slower near massive objects for a person who is not being accelerated by the black hole and who is looking at the something falling inside in it… Does this answer your question?
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Yash The [A] Star commented on :
@Pierre but then why would we looking at an object being sucked into a black hole being very slow/ not moving at all, but the object is actually being pulled in faster than the speed of light?
@Kate @Pierre thanks for answering!
Pierre commented on :
Hi
Yes so it is a little more complicated than this actually. Basically light bends around massive object, just like a ball falls in a gravitational field. If you do this basically you add a component of to the velocity of light, and then you obtain that light is faster than the speed of light! So to come around this, time has to go “slower” so that the light is always at the same speed. This is why time is slower near massive objects for a person who is not being accelerated by the black hole and who is looking at the something falling inside in it… Does this answer your question?
Yash The [A] Star commented on :
Yeah, thanks Pierre!