It's time for another physics question...
Post Fiend
Joined: Jun 2004
Posts: 8,147
Likes: 1
From: Joppa, Maryland
Originally Posted by BikerWithTruck
Dude, your avatar makes it WAY to hard to focus on physics... but I think you get what I'm saying. If you follow that logic (no promise that's it's correct, but I think it is) then the closer the object to the light source the slower it would have to go to make a shadow that travels at the speed of light. Further I hold that, because of this, a shadow can exceed the speed of light. I would love for somebody to explain to me how this might be incorrect.
Senior User
Joined: Nov 2005
Posts: 415
Likes: 0
From: Burlington Vermont area
ooops. I googled it. Looks like it's not a new idea - big suprize.
"... If the wall is very far away the movement of the shadow will be delayed because of the time it takes light to get there but its speed is still amplified by the same ratio. The speed of a shadow is therefore not restricted to be less than the speed of light...."
Found here: Is Faster Than Light Travel or Communication Possible?
"... If the wall is very far away the movement of the shadow will be delayed because of the time it takes light to get there but its speed is still amplified by the same ratio. The speed of a shadow is therefore not restricted to be less than the speed of light...."
Found here: Is Faster Than Light Travel or Communication Possible?
Postmaster
Joined: Jul 2003
Posts: 2,628
Likes: 0
From: Calgary, Canada
How about putting the objec creating the shadow in orbit around the sun, travelling at light speed.
Light travelling from the sun takes a finite amound of time to reach earth. When you block it, you don't see it, so, the only thing that would change by speeding up the orbit, is, the distance the moon would travel away from the eclipse position, in the 8 minutes it takes light to reach earth, as you speed up the orbit.
Interesting concept, I'm 'barely' on the side of, 'it will keep pace' group.
Light travelling from the sun takes a finite amound of time to reach earth. When you block it, you don't see it, so, the only thing that would change by speeding up the orbit, is, the distance the moon would travel away from the eclipse position, in the 8 minutes it takes light to reach earth, as you speed up the orbit.
Interesting concept, I'm 'barely' on the side of, 'it will keep pace' group.
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