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visits member for 4 years, 7 months
seen Aug 27 at 23:27

Aug
24
reviewed Approve Why are gravitational forces always attractive?
Aug
22
comment Euclidean geometry in non-inertial frame
I find your other answer far clearer, and maybe you should focus on tweaking it, rather than this one which is too difficult for a beginner to take in on first reading.
Aug
3
comment Can you depict the electron's electromagnetic field?
From the manifestly covariant Lorentz force equation, you're contracting the 4-velocity with the EM tensor to give the 4-force. As geometrical objects in themselves, they're independent of any reference frame, and I guess that's what John's after. If you can interpret the contraction operation, you should be able to work backwards to give a picture of the EM tensor.
Jul
27
reviewed Edit Does a ticking watch have more mass?
Jul
27
revised Does a ticking watch have more mass?
corrected additional grammar to save editing later on, changed relativity tag to special-relativity with more followers
Jun
4
comment Is the EmDrive, or “Relativity Drive” possible?
Shaw wrote a paper on the theory; I think he's sincere, but like a lot of electrical engineers arrogantly deluded, and doesn't understand the criticisms of professional physicists. I understand where he's coming from because I've done exactly the same, only to realize my stupid mistakes upon spending a year reading around it. Laithwaite was a professor of electrical engineering, convinced that gyroscopes held the key to weight loss: Eric Laithwaite Gyro Propulsion 1994 UK
Mar
29
awarded  Excavator
Mar
29
revised Is the change in kinetic energy of a particle frame independent?
fixed mathjax rendering
Feb
25
reviewed Approve Is space “real”, or is it some sort of accepted postulate?
Feb
21
awarded  Nice Answer
Jan
16
awarded  Yearling
Jan
11
revised Why does relativistic kinetic energy (KE) equal to the total relativistic energy minus the rest mass energy?
improved clarity
Jan
11
answered Why does relativistic kinetic energy (KE) equal to the total relativistic energy minus the rest mass energy?
Dec
10
answered Magnetic force and frames of reference
Dec
1
awarded  Organizer
Nov
19
awarded  Notable Question
Nov
9
reviewed No Action Needed Can light gravitationally affect itself?
Nov
9
reviewed No Action Needed Why does the acceleration $g$ due to gravity not affect the period of a vertically mounted spring?
Nov
7
reviewed No Action Needed Why does burning magnesium explode when sprinkled with water?
Nov
5
reviewed Edit Derivation of the Maxwell-Boltzmann speed distribution