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Re: Cardinality of turning wheel
Posted:
Mar 5, 2013 10:58 AM
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Frederick Williams wrote:
>
> quasi wrote:
> >
> > netzweltler wrote:
> > >
> > >Meaning, that the notion of infinite speed is nonsense,
> > >right?
> >
> > Well, I surely don't know how to make sense of it (but
> > I'm willing to be educated).
>
> Would it do to say that if a material object moved a non-zero distance
> instantaneously, then it moved with infinite speed?
Shmuel Metz's post a little down stream shows that (accepting
Einsteinian relativity) this won't work. If a particle is moving along
the x-axis at speed v from 0 to 2 and from 3 to 4 at speed v, but when
it gets to 2 it disappears and simultaneously reappears at 3, then
simultaneity causes problems.
--
When a true genius appears in the world, you may know him by
this sign, that the dunces are all in confederacy against him.
Jonathan Swift: Thoughts on Various Subjects, Moral and Diverting
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