Re: twin patadox question


"The Ghost In The Machine" <ewill@xxxxxxxxxxxxxxxxxxxxxxx> wrote in
message news:mntnt2-lon.ln1@xxxxxxxxxxxxxxxxxxxxxxxxxx
| In sci.physics.relativity, slefkowit@xxxxxxx
| <slefkowit@xxxxxxx>
| wrote
| on 29 Aug 2005 10:01:28 -0700
| <1125333294.553585.309380@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>:
| > The usual explanation (as I understand it) as to why the twin
paradox
| > is not really a paradox is that one twin experiences acceleration
and
| > the other doesn't.
|
| To the point of squishing him or her flat, yes.
|
| Consider that c = 3 * 10^8 m/s and that the normal
| tolerance of humans is about 10 g or 100 N/kg. Divide
| the two and one gets 3 * 10^6 s -- about a month at
| a *very* brutal acceleration that experienced fighter
| pilots tolerate for maybe some seconds.
|
| If one goes the more genteel 1 g = 9.805 N/kg, one
| gets a time interval of just short of a year.
|
| All this is assuming Newtonian mechanics, which isn't quite right;
| were one to add 1/2 m c^2 to a particle of mass m, the actual
| velocity would be on the order of sqrt(1-(1/(1+0.5))^2) = .74536 c.


Bean counting again, dingbat?
Have a hill of beans to count.
gamma Desired velocity
1 0.000000000000000
10 0.994987437106620
100 0.999949998749938
1000 0.999999499999875
10000 0.999999995000000
100000 0.999999999950000
1000000 0.999999999999500
10000000 0.999999999999995

Androcles

.

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