Re: length contraction difficulty

David <dseppala@xxxxxxxxxxxxx> wrote in
news:l6j2v2prbmu5n1eev9naj64r847k5olnsk@xxxxxxx:

But we can rotate these two rods 90 degrees at a rotation rate faster
than the speed of sound can adjust the length.

Are you sure?

Each atom in the rod "wants to move" 'along a straight line' rather than to
follow the rotation.

You may well NOT be able to rotate the rods faster than the speed of sound.
The forces may tear the rod apart before you can reach that point.




--
bz

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

bz+spr@xxxxxxxxxxxxxxxxxxxx remove ch100-5 to avoid spam trap
.

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