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RahSuh
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- Everyone moving through spacetime at speed c - don't get it
Hi
I have been reading Brian Cox/Jeff Forshaw book on Why does E=mc2 (highly recommend it)
One thing I don't get (page 95) is when they say everything moves through spacetime at the same constant speed c?!
I get why a person/object A at rest moves through space time with speed c - but say that A is moving at speed v with respect to B,
Apparently B thinks A is is moving through spacetime at speed C...
I can't follow the logic in the book - I have googled the question - and have come across terms like propert time (which I get everyone thinks is the same) but can't get to the fact that speed through space time is constant
Any help appreciated
ThanksSuhail
I have been reading Brian Cox/Jeff Forshaw book on Why does E=mc2 (highly recommend it)
One thing I don't get (page 95) is when they say everything moves through spacetime at the same constant speed c?!
I get why a person/object A at rest moves through space time with speed c - but say that A is moving at speed v with respect to B,
Apparently B thinks A is is moving through spacetime at speed C...
I can't follow the logic in the book - I have googled the question - and have come across terms like propert time (which I get everyone thinks is the same) but can't get to the fact that speed through space time is constant
Any help appreciated
ThanksSuhail