FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups 
 ProfileProfile   PreferencesPreferences   Log in to check your private messagesLog in to check your private messages   Log inLog in 
Forum index » Science and Technology » Physics » Research
Exercises in expansion
Post new topic   Reply to topic Page 1 of 1 [1 Post] View previous topic :: View next topic
Author Message
Oh No
science forum addict


Joined: 06 Apr 2006
Posts: 82

PostPosted: Tue Jul 11, 2006 4:35 pm    Post subject: Exercises in expansion Reply with quote

I like to find simple examples which give insight into physics, and came
up with these, which I thought quite fun and that some of you might like
to try them.

Place a single stationary particle at distance r from the origin in a
flat Minkowski space-time, using spherical coordinates. Introduce primed
coordinates such that t' = t and r'= a(t)r with a^dot/a = const. Solve
the equation of motion of the particle in primed coordinates?

Now place the particle in a Schwarzschild geometry and again introduce
primed coordinates with r'= a(t)r with a^dot/a = const, and allow the
Schwarzschild geometry to contract with the primed coordinates. In other
words the geometry is Schwarzschild in primed coordinates. Show the
relationship between t and t' and solve the equations of motion in
primed and unprimed coordinates.



Regards

--
Charles Francis
substitute charles for NotI to email
Back to top
Google

Back to top
Display posts from previous:   
Post new topic   Reply to topic Page 1 of 1 [1 Post] View previous topic :: View next topic
The time now is Wed Jun 28, 2017 3:38 am | All times are GMT
Forum index » Science and Technology » Physics » Research
Jump to:  

Similar Topics
Topic Author Forum Replies Last Post
No new posts Expansion of Factorial of a Fraction Jonas Math 4 Thu Jun 22, 2006 3:02 pm
No new posts Challenging exercises in relativity theory Spoonfed (www.spoonfedrel Relativity 41 Thu Jun 22, 2006 4:02 am
No new posts taylor expansion of f(x+h) about x ? G Patel Math 4 Mon Jun 05, 2006 3:36 am
No new posts Tayler Expansion of Exp[z] and Exp[z^2] about z=0? marcinrak@gmail.com Math 7 Fri Jun 02, 2006 8:39 pm
No new posts Expansion of the universe and creating energy... roninfromde@yahoo.com Relativity 4 Thu May 04, 2006 6:12 pm

Copyright © 2004-2005 DeniX Solutions SRL
Other DeniX Solutions sites: Electronics forum |  Medicine forum |  Unix/Linux blog |  Unix/Linux documentation |  Unix/Linux forums  |  send newsletters
 


Powered by phpBB © 2001, 2005 phpBB Group
[ Time: 0.0166s ][ Queries: 16 (0.0034s) ][ GZIP on - Debug on ]