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Author Topic:   Size of the Universe
DevilsAdvocate
Member (Idle past 3129 days)
Posts: 1548
Joined: 06-05-2008


Message 15 of 22 (493629)
01-09-2009 10:34 PM
Reply to: Message 14 by Rrhain
01-09-2009 4:42 PM


The seemingly immortal photon
Here is another bizarre thought.
If theoretically you were on the photon proceeding at the speed of light, time would stand still. Meaning that to the light particle it reaches us say 78 billion light years away instantaneously though to us it would take 78 billion light years for it to reach us. That is how relativity works (actually Einstein used flashes of lightning and a moving train as his metaphore for relativity).
This is why some subatomic particles when they are not traveling at the speed of light will decay in fractions of a second but when they are accelerated to near or at the speed of light have an almost infinite lifespan.
Sorry just thought I'd throw that interesting bit of quantum trivia in.

For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.
Dr. Carl Sagan

This message is a reply to:
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