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Jul
2
awarded  Curious
Apr
24
awarded  Nice Question
Apr
21
awarded  Notable Question
Feb
22
comment Surface Area: Volume and its relation with heat
More surface area means more space for heat to leave the body. I'm guessing the "less volume" part means you want more surface area while keeping the volume the same (eg breaking an ice cube to create more surface area but keeping the same exact volume).
Feb
22
comment The physics of sound boards
I'm only guessing, and it's not a mathematical answer. A sound board vibrates at the same frequency your string vibrates, so there's constructive interference. I think it's not that the same energy is able to produce a louder sound with a sound board, but more that that energy would have gone to waste without a sound board.
Feb
11
awarded  Popular Question
Jan
20
awarded  Yearling
Nov
2
awarded  Popular Question
Sep
13
awarded  Popular Question
Aug
6
comment What's going on along the “sides” of an Alcubierre warp bubble?
I don't really know the answer, so this is just speculation. "In front" of the bubble could span side to side, and "behind" the bubble could be the remaining 180 degrees. There is no "side" in the sense you mean, though the sides require negative energy.
Aug
6
comment What do you call the period after sunrise when the sky is bright?
@Jim that's definitely a good point. But in that case, the start and end of the day would be the sunrise and sunset respectively. I get what you mean, and in everyday usage there would be no debate as to what you mean, but I'm asking if there's a formal name for that particular time. :)
Aug
6
revised What do you call the period after sunrise when the sky is bright?
added 928 characters in body
Aug
6
comment What do you call the period after sunrise when the sky is bright?
Thanks for sparing it the lock. :) @Jim, unfortunately the beginning and end of a day is midnight, so it covers all 24 hours and doesnt end at twilight/sunrise/sunset.
Aug
6
comment What do you call the period after sunrise when the sky is bright?
The twilights happen before sunrise, so basically at the end of the very last twilight, is sunrise. At sunrise, the sky isn't blue or bright yet. The wikipedia article doesnt mention a "boundary" in the day after sunrise when the sky does become blue. Maybe there just isnt a word for it.
Aug
6
comment What do you call the period after sunrise when the sky is bright?
Well, I tried to go to an astronomy-related stack exchange but it was closed, and all the things there were moved to the physics stackexchange, so I figured this is probably the best place to ask.
Aug
6
asked What do you call the period after sunrise when the sky is bright?
Jun
23
comment Virtual photons, what makes them virtual?
In other words, virtual photons don't "exist." They're just tricks of math that work, and give some surprisingly accurate predictions of reality that are so good, we have to accept them as "real."
Mar
30
comment Why are magnetic lines of force invisible?
This is an interesting question. Too bad it was never answered. Some species of birds can see magnetic fields, after all.
Mar
29
comment Why is AC more “dangerous” than DC?
I think he means that, since he clearly describes it in his question
Mar
27
revised Net work output of an engine performing Carnot cycle?
added 87 characters in body