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Very interesting discussion relating to spacetime geometry and the speed of light.

The discussion started on reddit and split to Hacker News.

http://www.reddit.com/r/askscience/comments/fjwkh/why_exactly_can_nothing_go_faster_than_the_speed/#c1gh4x7

http://news.ycombinator.net/item?id=2244304

u4842819


Yes, excellent! Got to say I'm surprised to find something so good on those web sites. Thanks for finding this.

Jason


Great! The original poster was right, i like that idea of thinking about it a lot more, it is in a way more beautiful. Also correct me if I'm wrong, but does that mean that Light in a vacuum doesn't move forwards in time?

Jordan Pitt


Jordan, I am not sure (hence my desire to come to uni) but I think we can say that since a photon is massless and is travelling through space at "c" then from its perspective there is no such thing as time.

u4842819


Right.

Jason