Search SJML Archives! (Powered by Google)

Previous Message: Re: Fantasy relativity
Next Message: How to define "magic" (was Re: Fantasy relativity)
Month Index: November, 2001


From:     Silmacar Halfelven <silmacar@???????.com>
Date:     Thu, 1 Nov 2001 22:18:21 +0000
Subject:  Re: Fantasy "physics" - it's magic :)
>From: George LaValle <flamebringer@???????.com>
>
>Not that I mean to be picky, but one point in your discussion seems a tad
>off to me. The speed of light being 186,000 miles a second, how is 4
>million
>miles an hour a substantial fraction? not that I know any particular
>definition of what makes a fraction substantial, as such...

In physics it is commonly held that anything with a speed below c/100 is
non-relativistic as Galileian relativity works with a very high precision.

>
>Seeing as light travels 669.6 million miles an hour, that's lss than a
>fourth of a percent, yeah? I mean, hey, the earth is travelling fast enough
>as it is...I should think we'd be experiencing time dilation.
>

Well, there was such an experiment. Two atomic clocks were synchronized.
Then one was flown around the world on a jet airplane (so we're talking no
more than 300 m/s, when c is 300000000 m/s). And at the end of the trip, the
clock on the airplane was some minuscule fraction of second slower than the
clock fixed to Earth. So time dilation works even at very small speed.


>
>"So let me get this straight...You want to fly on a magic carpet to see the
>King of the Potato People and plead with him for your freedom, and you
>think
>you're completely sane?"
>
>Rimmer, Red Dwarf
>
>

Totally off topic: we don't get Red Dwarf here in Italy. Sob.

Silmacar Halfelven
Captain of the Guards of Cardolan

"Since this Galaxy began, vast civilizations have risen and fallen, risen
and fallen, risen and fallen so often that it's quite tempting to think that
life in the Galaxy must be
a) something akin to seasick - space-sick, time sick, history sick or some
such thing, and
b) stupid."




_________________________________________________________________
Scarica GRATUITAMENTE MSN Explorer all'indirizzo
http://explorer.msn.it/intl.asp


Previous Message: Re: Fantasy relativity
Next Message: How to define "magic" (was Re: Fantasy relativity)
Month Index: November, 2001

SubjectFromDate (UTC)
Fantasy "physics" - it's magic :)    Jim Davis    31 Oct 2001 11:39:07
Re: Fantasy "physics" - it's magic :)    Static    31 Oct 2001 18:11:37
Re: Fantasy "physics" - it's magic :)    George LaValle    01 Nov 2001 02:53:52
Re: Fantasy "physics" - it's magic :)    TayJK    01 Nov 2001 03:18:57
Re: Fantasy "physics" - it's magic :)    Andrew 'NightBeing' Alchemist    01 Nov 2001 03:37:44
Re: Fantasy "physics" - it's magic :)    George LaValle    01 Nov 2001 05:13:50
Re: Fantasy "physics" - it's magic :)    Silmacar Halfelven    01 Nov 2001 22:18:21

[ SPJ-L@Cornell.edu ] [ Spelljammer@Leicester.ac.uk ] [ Spelljammer@MPGN.com ] [ Spelljammer-L@Oracle.Wizards.com ]