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visits member for 2 years, 5 months
seen Nov 21 at 22:43

Jul
28
awarded  Favorite Question
Jul
23
awarded  Teacher
Jul
13
awarded  Yearling
Jul
2
awarded  Curious
Jun
22
accepted How can I derive this Hamiltonian?
Jun
22
comment How can I derive this Hamiltonian?
So when I take a partial derivative with respect to $z$ or $p$, $t$ is considered to be constant?
Jun
20
asked How can I derive this Hamiltonian?
Jun
20
comment How did Eratosthenes know the suns rays are parallel?
Aristarchus of Samos: The Ancient Copernicus by Thomas Heath contains the only translation of On the Sizes and Distances I could find, for future reference.
Jun
20
accepted What do the derivatives in these Hamilton equations mean?
Jun
20
comment What do the derivatives in these Hamilton equations mean?
@jinawee My question is more computational/mathematical, but yes.
Jun
19
asked What do the derivatives in these Hamilton equations mean?
May
6
comment Rocky Planet in the center of System
Until your second paragraph, it seemed more like you were asking if there could be rocky objects in a galaxy which don't orbit any star.
Apr
10
awarded  Notable Question
Mar
22
awarded  Good Question
Feb
17
awarded  Notable Question
Feb
16
awarded  Quorum
Feb
10
comment What justifies dimensional analysis?
@jwimberley I actually didn't even read the math (sorry! It seemed overkill). It was that you explicitly explained that "such a formula would necessarily stop being true if you used different units, and we assume physical laws don't depend on units" that did it for me.
Feb
10
comment What justifies dimensional analysis?
@CarlWitthoft The non-triviality of the question is evidenced by the fact that only 1 answer out of 9 produced a conclusive argument that wasn't just a restatement of "it obviously wouldn't make sense". You should read the accepted answer (and Rahul Narain's which is basically a summary of it) and see if the question still seems so silly.
Feb
9
accepted What justifies dimensional analysis?
Feb
8
awarded  Popular Question