I feel like talking about physics, and something I’ve always found fascinating at that. For years I’ve been interested in the concept of time, it’s about as far as I like to tread into philosophy, but anyways on with the show.
Gravitational time dilation is the odd effect of relativity where by gravity affects the passage of time. Most of you should know about the sort of analogy as space-time (And hopefully most of you know that space and time CANNOT ever be separated) being compared with say a rubber sheet and lead weights. The lead weights if placed on the rubber sheet then stretch it and if you were to draw two points on the sheet before stretching it they’d be further apart after applying the weights. Obviously it’s a bit more complex and 3D, but it illustrates the point quite nicely. Any way these distortions affect both time and space (well really just space-time but whatever) and what this does is mean that the closer you are to a mass the slower time will pass. Similarly the further away the faster time travels. This has been measured experimentally a few years back using atomic clocks which are hugely accurate at various altitudes above the Earth. The differences between them were only a few nanoseconds but none the less GPS satellites had to be recalibrate to take it into account.
Oh I just had a thought. Let’s assume that a black hole reaches an almost infinitesimal point in space (I’ve heard singularity thrown around but I’m not sure if that theory is still in vogue), that means as you approach said point time will become increasingly slow, which means you may theoretically never reach the centre. Woah.