- #1
Nick Prince
- 20
- 0
Can anyone please explain to me in simple terms what the difference is between a trapped surface and an event horizon. I'm not familiar with global general relativity so cannot understand any of the results I've looked up by googling. I think that Tipler has said that when the future C-boundary of a collapsing universe is a single point then there will be no event horizons. moreover, event horizons can totally vanish if the universe is spatially compact which is to say it is closed. I really need an intuitive idea of the difference between an event horizon and a trapped surface.
Any help gratefully received.
Any help gratefully received.