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Dec
1
awarded  Popular Question
Jan
15
accepted Where to find the current positions and velocities of the planets?
Jan
14
awarded  Commentator
Jan
14
comment Where to find the current positions and velocities of the planets?
The link to the blog post in your previous edit worked perfectly! (Shockingly!) If you revert I'll be happy to accept.
Jan
14
asked Where to find the current positions and velocities of the planets?
Jan
14
comment How would it be to look at the sky if the earth were near the edge of the universe?
Earth is by definition the center of the observable universe. The observable universe is the region of space such that light from the beginning of the universe can reach the observer, i.e. Earth.
Jan
1
awarded  Teacher
Sep
10
awarded  Student
Sep
6
comment Heat Equation Equalities
I voted to migrate it. I'll flag it so the mods can do so unilaterally.
Sep
6
comment Heat Equation Equalities
Perhaps this would be better suited for physics.SE?
Sep
3
answered Franck-Hertz Experiment explanation
Aug
29
comment Pressure change due to fan removing air from a non-airtight room
@JasonWaldrop I guess I was unclear. The fan is blowing air out of another hole, at a rate of 100cfm at 101.3kPa (and the inside pressure should be close enough to this for the difference not to matter).
Aug
29
awarded  Scholar
Aug
29
accepted Pressure change due to fan removing air from a non-airtight room
Aug
29
comment Pressure change due to fan removing air from a non-airtight room
Ah, I hadn't realized air had such a small MFP. Thanks for the answer!
Aug
29
comment Pressure change due to fan removing air from a non-airtight room
Yes, I assumed infinite MFP, because intuitively I think of the particles travelling through largely empty space and thus colliding rarely. Why is an infinitesimal MFP more accurate? Also, I'm not sure what you mean by "From your problem statement, it seems this scale constant was given separately." Is the information I've given enough to determine the scale constant? If not, what more do I need to specify?
Aug
29
comment How can a non-conservative field be a scalar multiple of a conservative field?
@jak You would certainly expect non-scalar multiples to be equal somewhere. Being equal everywhere is very different.
Aug
29
asked Pressure change due to fan removing air from a non-airtight room
Feb
28
comment What's the importance of Noether's theorem in Physics
I think this is better suited for physics.SE
Jan
23
awarded  Supporter