Why would'nt this work?
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Perhaps also worth pointing out that the speed of light is that exact speed, because light itself hits a speed limit.
As far as we know, light has no mass, so if it is accelerated in any way, it should immediately have infinite acceleration and therefore infinite speed (this is simplifying too much by using a classical physics formula, but basically it's like this:
a = f/m = f/0 = ∞). And well, light doesn't go at infinite speed, presumably because it hits that speed limit, which is somehow inherent to the universe.That speed limit is referred to as the "speed of causality" and we assume it to apply to everything. That's also why other massless things happen to travel at the speed of causality/light, too, like for example gravitational waves. Well, and it would definitely also apply to that pole.
Here's a video of someone going into much more depth on this: https://www.pbs.org/video/pbs-space-time-speed-light-not-about-light/
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Cool vid, thanks for sharing
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A perfectly rigid object would be usable as a tool of FTL communication
Would it though? I feel like the theoretical limit is still c
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This wouldn't work because the moon is more than 300k km away
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The problem lies in what "unstretchable" and "unbendable" means. Its always molecules and your push takes time to reach the other end. You think its instantaneous because you never held such a long stick. The push signal is slower than the light
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That's what he meant by we'll use sticks on the other side
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You think its instantaneous because you never held such a long stick.
Speak for yourself!
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You should make it out of feathers. Steel is heavier than feathers.
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always had this question as a kid
And then went, draw it out, and asked.
I applaud that (and the art), good for you.(And the good people already provided answers.)
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why wouldn't this work
because bullets are faster than whatever the fuck speed stickman is achieving
and even bullets are slower than light -
Yes, the speed of sound in an object is how fast neighboring atoms can react to each other, and not only is that information (therefore limited to C already) but specifically it's the electric field caused by the electrons that keep atoms certain distances from each other and push each other around. And changes in the electric/magnetic fields are famously carried by photons (light) specifically - so even in bulk those changes move at the speed of light at most
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Yes, that's the point. The limit c denies the possibility of a perfectly rigid body existing physically. It can only exist as a thought experiment.
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I think relativity demonstrates that light does have mass?
They might not have "rest mass" but they do have mass!
The eclipse experiment proved it, solar sails whilst hypothetical demonstrate it.
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Wow, TIL that the speed of sound has this equivalence
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AlphaPhoenix is definitely one of the best scientists on YouTube, that video is good.
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What about using c++ or rust?
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If you're openminded enough to listen to those who disagree with the standard model,
take an elastic band and twist it, that's what will happen to the stick and this travels at lightspeed,
as this is what light does. Do it fast enough and the 'elastic band'/stick/'atom on the other end' breaks. -
Actually, the thing that applies to the pole is the speed of sound (of the pole material), which is the speed the atoms in the pole move at. Not even close to the speed of light.
