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seen Jun 27 at 14:20

Jun
11
comment How are the higher derivatives (jerk, jounce) of position with respect to time used in physics?
Hmmm, en.wikipedia.org/wiki/… and en.wikipedia.org/wiki/Jerk_(physics)#Applications ? But "[h]igher-order derivatives of position are not commonly useful. Thus, there has been no consensus among physicists on the proper names for derivatives above pop." (en.wikipedia.org/wiki/Pop_(motion))
Jun
2
awarded  Popular Question
May
23
comment Can I do something for being heavier to be lifted?
It's much easier to lift (from the ground, completely) a 4 m stick than a 4 m rope of the same mass.
May
23
comment Can I do something for being heavier to be lifted?
I'm fairly sure that tensing your muscles will make you easier to lift. Acting like a sack will be more difficult.
Apr
20
comment Is time an illusion?
Related: physics.stackexchange.com/q/71823/17609
Apr
12
comment By what maximum amount can we concentrate sunlight?
This (p. 7) looks close to the number given by you.
Apr
12
comment Do virtual photons have a frequency?
Related: physics.stackexchange.com/q/19015/17609
Apr
11
revised When was the first time that superconducting quasiparticles were called Majorana fermions?
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Apr
11
answered When was the first time that superconducting quasiparticles were called Majorana fermions?
Apr
7
comment What is the “Obscuration Factor (OBF)”?
Google "obscuration factor" -alcohol -alcoholic. Lots of optics links.
Apr
6
comment Is $0\,\mathrm{m}$ dimensionless?
@EmilioPisanty Sure. Quick answer. Citations. If I Google "An Ontology for Engineering Mathematics" it shows up as hit #1 with 446 citations (meaning references to this particular paper).
Apr
6
revised Is $0\,\mathrm{m}$ dimensionless?
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Apr
6
revised Is $0\,\mathrm{m}$ dimensionless?
added 452 characters in body
Apr
6
revised Is $0\,\mathrm{m}$ dimensionless?
added 452 characters in body
Apr
6
answered Is $0\,\mathrm{m}$ dimensionless?
Apr
3
revised What was Feynman's famous formula?
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Apr
3
answered What was Feynman's famous formula?
Mar
31
comment What's up with my whipped cream?
+1 Because of the video. It demands a (simple) explanation. (Like how the fluid actually moves.) (Also, the pictures aren't very helpful, I think.)
Mar
26
comment Physics without time
See en.wikipedia.org/wiki/The_End_of_Time_(book), en.wikipedia.org/wiki/The_Unreality_of_Time, en.wikipedia.org/wiki/Eternalism_(philosophy_of_time). Pretty philosophical, I believe. Therefore: plato.stanford.edu/entries/time.
Mar
22
revised Are Thomas Breuer's subjective decoherence and Scott Aaronson's freebits with Knightian freedom the same things in essence?
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