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Assume a solid disc of such a radius that...
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Assume a solid disc of such a radius that at 1 rpm, a point on the outermost edge would travel at an angular velocity of 0.9c (or any relativistic speed).

Further assume that it's made of such a material that it doesn't break in any way under the strain.

What, if any, are the relativistic effects of a solid body where there's some portion that's at zero relative speed to the other portion of the body?
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>>7807248
Is this a variation on Ehrenfests paradox?
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>>7807248
wouldn't it just look like half its size, with the outer half being too fast to see
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>>7807248
>What, if any, are the relativistic effects of a solid body where there's some portion that's at zero relative speed to the other portion of the body?
The relativistic effects are that the body does in fact break and your assumption is contradictory.
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>>7807251
Reading about that now.
>>7807285
Why?
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>>7807285
>What is a thought experiment
>What is Born rigidity
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>>7807300
>What is a thought experiment
I'll tell you what a thought experiment isn't: It's not something where you can assume something *incoherent* and expect coherent results.
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>>7807319
So tell me how that whole square root of a negative one thing is working out.
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>>7807248
spooky
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>>7807319
I've found the retard. Thought experiments are an important part of theoretical physics (https://en.wikipedia.org/wiki/Thought_experiment#Physics) You might notice that a lot of those experiments reached strange conclusions. What OP is talking about sounds very familiar to Ehrenfests paradox, something that fell out of a thought experiment involving a cylinder rotating at relativistic speeds.
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>>7807343
>>7807327
>Ehrenfests paradox
If I'm understanding what I'm reading at least somewhat correctly, I guess that is like what I was talking about...just something I've always been curious about and didn't know how to search for. Thanks.
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>>7807360
No problem, I actually had never heard of it until this thread so I grabbed that off of Wikipedia because it gave me an ah-ha moment for sure.
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>Ehrenfests paradox
>using Euclidean geometry
>not Minkowski
Thread replies: 13
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