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 Yearling
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Jan
23
comment Books about arrow of time
Sean Carroll, From Eternity to Here: The Quest for the Ultimate Theory of Time. I haven't read it. Also: arxiv.org/abs/hep-th/0410270
Jan
17
comment Bicycle counter-intuitive: in which direction it will move?
It depends on whether the man pulling the string retains a fixed position relative to the ground or relative to the bike. In the former case, the bike will move backward (and the pedals will rotate counterclockwise). In the latter case (similar to him being on the bike), the bike will move forward (and the pedals will rotate clockwise). NB: The former case assumes that the bike does not have a backpedal braking mechanism, and that gearing is 'normal'. It is the lack of appreciation of the distinction between being fixed to the bike or to the ground that may make things look cntrintuitive.
Jan
11
revised Why things get dry (meaning from water)?
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Jan
11
revised Why things get dry (meaning from water)?
edited body
Jan
8
awarded  Yearling
Jan
5
comment What would we observe as background on the sky if the big bang had never occurred?
At least some of the alternative theories were suggestive of less uniformity. See, e.g. en.wikipedia.org/wiki/… and maybe en.wikipedia.org/wiki/Non-standard_cosmology or en.wikipedia.org/wiki/…
Jan
1
comment Will physics ever be able to answer the question: “What caused the universe to come into existance”?
On first read, your 'I doubt [...]' doesn't seem quite relevant. (However, perhaps you mean to understate.) Care to strengthen that last statement (perhaps using references/polls/etc. suggesting such a general stance/lack of belief/lack of ambition/whatever)?
Dec
23
awarded  Pundit
Dec
19
comment Is black hole a black body?
Duplicate: physics.stackexchange.com/q/61582/17609
Dec
13
comment Principle of least action and greedy algorithm
@Viesr This is where I tend to recommend goodreads.com/book/show/5552.QED, which I think is the best (not just on physics) little book out there.
Dec
13
comment Principle of least action and greedy algorithm
@Viesr I suggest that in classical billiard ball physics, that would be right (and super-intuitive, I suppose). But not in quantum or wave physics, where interference plays a big part. Also see: physics.stackexchange.com/a/212730/17609
Dec
13
revised Why do people say nuclear fusion is 50 years away?
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Dec
13
revised Why do people say nuclear fusion is 50 years away?
added 25 characters in body
Dec
13
answered Why do people say nuclear fusion is 50 years away?
Dec
12
comment Why lightning most likely occure in night?
Related/duplicate: earthscience.stackexchange.com/q/4967 Also it seems to depend on location: earthsky.org/earth/night-thunderstorms-top-things-to-know nsf.gov/discoveries/…
Dec
10
comment Why isn't $G=1$ as common as $c=\hbar=1$?
en.wikipedia.org/wiki/Geometrized_unit_system (But: "The geometrized unit system, used in general relativity, is not a completely defined system.")
Nov
23
awarded  Popular Question
Nov
7
comment Is there an way water can burn or cause fire?
I pretty sure that taking your fire to $14000000^\circ~\textrm{C}$ should do it...
Nov
7
comment What is theMost compressible material commonly found?
Perhaps look up the compressibility of rubidium and potassium.
Nov
7
comment What is theMost compressible material commonly found?
It's not. Unless you live in a warm place. Room temperature is $20^\circ~\textrm{C}$.