lavinia Science Advisor Messages 3,385 Reaction score 760 Thread starter Feb 8, 2011 #1 Can a freely floating observer do an experiment that tells him when he is crossing the event horizon?
Can a freely floating observer do an experiment that tells him when he is crossing the event horizon?
Dale Mentor Insights Author Messages 36,982 Reaction score 15,958 Feb 8, 2011 #2 Not a "local" experiment.