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 Inquisitive
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~34k people reached

Apr
25
asked Why is it easier to make inks which show up on white paper than on black?
Apr
11
awarded  Inquisitive
Apr
10
answered Entanglement, Bohr-Einstein Debate, Bell's Inequality
Apr
10
comment How can $\Lambda^0$ and $\Sigma^0$ both have $uds$ quark content?
Thanks, I've looked into this a bit more. If I understand correctly, it's because the quarks are in higher-energy states within the exotic baryons, is that right?
Apr
10
accepted How can $\Lambda^0$ and $\Sigma^0$ both have $uds$ quark content?
Apr
10
asked How can $\Lambda^0$ and $\Sigma^0$ both have $uds$ quark content?
Apr
6
comment Why don't stars re-emit the photons they absorb, thus restoring a continuous emission spectrum?
Okay, so some other observer will get the photon, but equally likely an atom from another part of the star might randomly emit its photon in our direction. Shouldn't this compensate? If not, why not?
Apr
6
asked Why don't stars re-emit the photons they absorb, thus restoring a continuous emission spectrum?
Mar
6
awarded  Nice Question
Mar
4
comment How can a green laser be reflected as orange?
The dot appears on the object being illuminated.
Mar
3
comment Why are particles in Quantum Mechanics indistinguishable?
In CM if you say "p1 is at position r1 and p2 has position r2" and you have no other information about either of them, then they would be indistinguishable. Suppose you closed your eyes and someone maybe switched them around or not, how could you tell? Paint a dot on one of them? Well, then you'd have information other than the position vectors and the premise fails.
Feb
10
asked Why does conservation of étendue matter when showing one cannot focus light to arbitrary temperatures?
Dec
5
asked Why should gluons move at a speed determined by $\mu_0$ and $\varepsilon_0$?
Nov
30
awarded  Popular Question
Nov
24
comment How does $p=fv$ hold when $v=0$ and an engine is working?
I'm implicitly assuming that force and displacement are colinear, just for simplicity of presentation.
Nov
21
comment How can I apply Planck's law to calculate the photon energy density of a warm room?
Intuitively, if you put an object into this little volume, how many photons per second would hit it?
Nov
21
comment How can I apply Planck's law to calculate the photon energy density of a warm room?
Could you clarify "take the volume as your system" please? I think you've glossed over the essential core of my question :-)
Nov
19
asked How can I apply Planck's law to calculate the photon energy density of a warm room?
Nov
4
comment How is it possible that quantum phenomenons (e.g. superposition) are possible when all quantum particles are being constantly observed?
Here's a nice short story which illustrates the philosophical problem nicely. Why our subjective experience of measurements is the way it is is a big mystery.
Nov
4
asked How can quantum wavefunctions be smooth/continuous when particles are created/destroyed/changed?