#1
May2303, 08:16 PM

P: n/a

My woodshop teacher, who is a physics hobbyist, insists that by using magnitism to stretch time, we could travel faster than light.
I protested at the idea; but my explanations of how time doesn't matter much when it comes to ftl travel, and the fact that you need infinite energy failed to convince him. Besides, I don't see how 'stretching time' could allow for ftl travel. To prove his hypothesis, he took one step, and claimed he traveled faster than light. Can anyone make sense out of this?? 



#2
May2303, 09:31 PM

P: 3,715

As for that last comment (about his having traveled faster than light), I think he was either joking, or under some strange misconception. 



#3
May2303, 10:49 PM

P: 179

I dont think so because the only contribution to bending spacetime that energy makes is small  m=E/c^{2} (or m=hf/c^{2}), so 1 kilogram of matter bends space the same as a superconcentrated energy of 9x10^{16} joules. That'd be a lot of EM energy, such as having a bunch of Hbombs in a very small space.




#4
May2403, 04:03 PM

Emeritus
Sci Advisor
PF Gold
P: 12,493

Woodshop teacher's ftl theory 


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