-2
votes
0answers
16 views

Local Galilean coordinate system? [closed]

What is a local Galilean coordinate system? I'm trying to find the most clear way of defining this...
2
votes
1answer
295 views

Degrees of freedom in the infinite momentum frame

Lenny Susskind explains in this video at about 40min, as an extended object (for example a relativistic string) is boosted to the infinite momentum frame (sometimes called light cone frame), it has no ...
3
votes
7answers
454 views

Relation between coordinates and frames of reference

I always get a little uneasy that all the theories I can think of (at least since Newton) are constructed in a way such that they would be true in heaven and on earth ... but we can never go ...