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Re: Misner, Thorne and Wheeler, Exercise 8.5 (c)
Posted:
Apr 9, 2013 3:05 AM


"Dirk Van de moortel" wrote in message news:kk0e6p$7g2$1@speranza.aioe.org...
"Hetware" <hattons@speakyeasy.net> schreef in bericht news:Duidna9WrZBIBv7MnZ2dnUVZ_rydnZ2d@megapath.net... > On 4/8/2013 9:27 AM, Dirk Van de moortel wrote: >> Hetware <hattons@speakyeasy.net> wrote: >>> This is the geodesic equation under discussion: >>> >>> d^2(r)/dt^2 = r(dp/dt)^2 >>> >>> d^2(p)/dt^2 = (2/r)(dp/dt)(dr/dt). >>> >>> r is radius in polar coordinates, p is the angle, and t is a path >>> parameter. >>> The authors ask me to "[S]olve the geodesic equation for r(t) and >>> p(t), and show that the solution is a uniformly parametrized straight >>> line(x===r cos(p) = at+p for some a and b; y===r sin(p) = jt+k for >>> some j and k). >> >> Normally we'd write dotted variables, but with quotes it's easier. >> So write > > Like this? > > <math xmlns='http://www.w3.org/1998/Math/MathML'
[snip]
This is a text group :)
Dirk Vdm ============================================== I knew you would snip, you are such a predictable imbecile.
 "Dork Van de faggot" <dirkvandemoortel@hotspam.not> wrote in message news:ke1gcs$f2d$1@speranza.aioe.org... > Indeed, writing LT and inverse: > x' = g ( x  v t ) [1] > t' = g ( t  v x ) [2] > x = g ( x' + v t' ) [3] > t = g ( t' + v x' ) [4]
[ but v' = x'/t', the inverse velocity ] > No, imbecile, v' = 0.
"Dork Van de faggot" wrote in message news:kfp3ba$ku0$1@speranza.aioe.org... How hard is it to listen to the definitions and stick with the rules? "Did you ever had algebra?"  Dork Van de faggot "the transformation equations are valid only for speeds below or up to c"  Dork Van de faggot
 So if T = 5 years and v = 0.8c, then the stay at home twin will have aged 10 years (2T) while his travelling twin sister will have aged 6 years (2T/g). <no silly grin>  Psychodork Van de improper faggot.


Date

Subject

Author

4/7/13


Guest

4/7/13


Lord Androcles, Zeroth Earl of Medway

4/8/13


Lord Androcles, Zeroth Earl of Medway

4/8/13


Hetware

4/8/13


Lord Androcles, Zeroth Earl of Medway

4/8/13


Hetware

4/9/13


Lord Androcles, Zeroth Earl of Medway

4/9/13


Hetware

4/8/13


Hetware

4/8/13


Lord Androcles, Zeroth Earl of Medway

4/9/13


Hetware

4/9/13


Lord Androcles, Zeroth Earl of Medway

4/9/13


Hetware

4/9/13


Lord Androcles, Zeroth Earl of Medway

4/9/13


Hetware

4/8/13


Dirk Van de moortel

4/8/13


Lord Androcles, Zeroth Earl of Medway

4/8/13


rotchm@gmail.com

4/9/13


Dirk Van de moortel

4/13/13


Dono

4/13/13


rotchm@gmail.com

4/13/13


Dono

4/13/13


Dono

4/13/13


Dono

4/13/13


rotchm@gmail.com

4/13/13


Dono

4/13/13


rotchm@gmail.com

4/13/13


Dono

4/13/13


Dono

4/13/13


rotchm@gmail.com

4/13/13


Dono

4/13/13


rotchm@gmail.com

4/13/13


Dono

4/9/13


Guest

4/9/13


Dirk Van de moortel

4/9/13


Lord Androcles, Zeroth Earl of Medway

4/8/13


Rock Brentwood

4/8/13


Hetware

4/8/13


Lord Androcles, Zeroth Earl of Medway


