If shadows can move faster than the speed of light, would it be possible to use shadows or the "absence of light" to send information at faster than light speeds?
If shadows can move faster than the speed of light...
Grayson Ramirez
Other urls found in this thread:
Gabriel Carter
>If shadows can move faster than the speed of light
They can't.
/thread
Kevin Johnson
>If shadows can move faster than the speed of light
They can't.
Ryan Butler
No, because shadows are an absence of light. Plus, it would still be limited by the speed of the object being used to detect the difference.
Leo Bailey
>shadows can move faster than the speed of light
what
Brandon Long
How can mirrors be real if our eyes aren't real?
William Cruz
damn, that's dumb
Kayden Allen
What I mean is, if you had a giant shadow on the moon of your hand from earth, and moved it across, the shadow of your hand could "move" faster than light right?
Jayden Gomez
The light that was previously reaching you and is now blocked by the thing casting the shadow can't travel faster than light though. Basically you won't see the shadow appear until the light that was emitted the instant before the shadow was cast has a chance to reach the observer. So no matter how you move shadows around, an observer won't see those movements until light has had a chance to reach him.
Cooper Ward
...
Bentley Ortiz
...
Cameron Perry
what if lightbulbs didnt produce lihgt they are just "dark absorbers" which suck up darkness, in which absence is light?
Henry Cooper
your hand's shadow is just a gap in the light that "moves" at the exact same speed as the light as it travels through space.
Josiah Thomas
But lets say we had a bunch of switches on the moon that were kept "off" so long as light was hitting them, wouldn't the speed in which the shadow moved across the moon turn them on in a somewhat "faster than light" way?
Shit it's hard to explain without sounding retarded
Oliver Bell
youtube.com
Basically got the idea from this video
Caleb Brown
>If shadows can move faster than the speed of light
They can't.
Aaron Wood
"One way to think of a "moving shadow" is by following the last photon that was allowed through. In that case, the speed of a shadow is exactly the speed of light.
On the other hand, you could also define the speed of a shadow as the speed of the boundary between dark and light. In that case there is no thing that's actually moving, so there's no bound on the speed of the shadow -- it can go as fast as you want it to. (Well, it's limited by your device and the distance to the moon, which serves to multiply the speed because you're presumably using the distance to multiply the angle.)"
Ryan Robinson
>On the other hand, you could also define the speed of a shadow as the speed of the boundary between dark and light. In that case there is no thing that's actually moving, so there's no bound on the speed of the shadow -- it can go as fast as you want it to
That's true, but you can't use this phenomenon to transfer information faster than light, because the delay between when you activate the device that moves the shadow and when someone at the far end sees the shadow move is equal to the time needed for light to travel that distance. Which is another way of saying the "follow the last photon" thing.
Joseph Perez
I see, thanks I needed an explanation.
Isaiah Evans
A shadow isn't a 'thing'. Its the... oh never mind. This whole site is fucking retarded.
Logan Parker
>Shit it's hard to explain without sounding retarded
Probably because it's retarded.
Daniel King
...
Parker Garcia
You do sound retarded. Think about how old the light hitting your dumbass eyes is from the stars.
Jack Myers
I suppose you think light isn't a thing as well moron.
Cameron Ross
This is retarded. No, shadows don't move faster than light, if you block the light the shadow won't appear until the last of the light has reached the faraway object.
Jordan Adams
You dumb fuck. Light is an actual thing. A shadow is just the lack of something called light in certain areas.
Camden Foster
I always thought the speed of light was a poor term for it. What we're really talking about is the speed of information, and light just happens to be the fastest possible way of sending information.
Colton Evans
>he doesn't know about the quantums particles called darkons that are repelled by photons
Idiot.