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Why Does Time Slow Down Near a Black Hole?

Black holes are some of the most intriguing, yet not very well-understood objects in the universe, which are best described by Einstein’s theory of general relativity

One of the more interesting predictions of the theory is that even time will slow down near a black hole. But why, exactly?



Time slows down near a black hole due to the extremely strong gravitational field of the black hole. According to the theory of general relativity, this phenomenon is due to the gravity of the black hole curving spacetime in a way that affects all measurements of time and space near the black hole.

In this article, we’ll be discussing all about this slowing down of time -thing in great detail (namely the interesting geometry behind it) as well as looking at some consequences of this phenomenon (such as how it affects aging).

We’ll also look at some concrete examples of how much time actually slows down near a black hole as well as how different properties of black holes affect this (such as electric charge and spin).

If you’ve ever heard of general relativity or black holes before, you’ve probably also heard about the phenomenon called gravitational time dilation.

This is the effect a gravitational field has on the passing of time around it, namely that a clock will “tick” slower near, for example, a black hole than it would far away from the black hole.

The real question is, however, why such a phenomenon actually occurs and the answer is quite subtle but has a nice geometric explanation.

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