Even if it were perfectly rigid, supernaturally so, your push would still only transmit through the stick at the speed of light. The speed of light is the speed of time.
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.
Even if it were perfectly rigid, supernaturally so, your push would still only transmit through the stick at the speed of light. The speed of light is the speed of time.
The push would travel at the speed of sound in the stick, much slower than the speed of light
In a “perfectly rigid” stick (a fictional invention), the speed of sound is the speed of light.
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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.