Why would'nt this work?
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Stop fooling around and give Ruyi Jingu Bang back to Sun Wukong.
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Yep. Like holding a jump rope between two people, and one of them sends a wave through it to the other. The force still has to travel through the material.
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That would not work. Pushing an object is transmitting kinetic energy to it. The object will push back, and energy would not be distributed to the whole object at the same time.
If the object cannot be altered in any way, then the energy would not be transferred to it, and if it has enough plasticity to absorb the kinetic energy, it would be spread in a wave to the tip. A wave that would always be slower than light.Now stop fooling around and give Ruyi Jingu Bang back to Sun Wukong.
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Okay for a thought experiment what if it’s a perfect element incapable of that?
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You are slightly and temporarily increasing the spacing between atoms/compounds in the stick. This spacing will effectively travel like a shockwave of "pull" down the stick.
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Well no. As others have said the force in the pole will travel at the speed of sound.
Though if you were to wiggle the flashlight back and forth really fast the spotlight on the moon would travel "faster" than the speed of light.
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Like some sort of material that has a speed of sound close or equal to the speed of light? Then yeah, it would move about the same speed as the speed of light.
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Wouldn't that still be normal light speed communication from earth to two places on the moon, not FTL communication between two places on the moon?
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Reminds me of
- If you can have dinner with anyone, alive or dead, who would it be?
- No thanks, I've already eaten.
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It was Alpha Phoenix
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Objects like an unbreakable stick are still composed of atoms suspended in space and held together by the fundamental forces of nature. When you push on one end, the other end doesn't immediately move with it but rather the object experiences a wave of compression traveling through it. This wave of compression travels faster than we can perceive but still cannot travel faster than light.
Look up why arrows bend after they've been released by a bow, it's essentially the same mechanic.
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Because you put the apostrophe in the wrong place?
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It's still called the speed of sound. Your intuition is correct in that it's much higher for solid things, but it's still much slower than the speed of light.
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Move a sheet up and down rapidly
You can see the wave travel across it
