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"If you can't explain it simply, you don't understand it well enough" - Albert Einstein

"What he said ^" - Steeven


3h
answered How does a bulb light up when it's connected in a circuit with an uncharged capacitor and a cell?
1d
answered Is there a formula/relationship between $q$, $m$, $c$, $\Delta T$ and $t$ (time)?
Jul
28
reviewed Approve How to integrate this physics model?
Jul
28
comment A pendulum clock vs. an atomic clock
Well, if you make the scale to fit, then they are both correct...
Jul
28
reviewed Edit Black-hole meets Black-hole
Jul
28
revised Black-hole meets Black-hole
came across
Jul
28
revised Find an angle in 3 dimensions
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Jul
26
revised Electron flow: Are these two simulations contradicting each other?
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Jul
26
answered Electron flow: Are these two simulations contradicting each other?
Jul
26
comment Electromagnetic cooling
@acs To be very strict, it is rather thermal energy that is stored as kinetic energy in matter and not heat. Heat is rather energy "in transit" and not a stored amount. Just a note on the terminology.
Jul
26
comment Electromagnetic cooling
@acs The cooling Dave talks about is not external. It is the material itself cooling down in some part of it as electrons move and carry thermal energy along with them from within the material. Consider it a redistribution of thermal energy rather than a cooling process from the outside.
Jul
23
comment Why does water freeze from top to bottom
This is good, but doesn't answer the question of why.
Jul
21
answered understanding time: Is time simply the rate change?
Jul
20
comment How can one derive the Ohm's Law?
+1 Good answer - it would be improved by adding a note of what the variables symbolize.
Jul
20
revised How is it possible that it can get hotter in the car than it is outside?
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Jul
20
revised How is it possible that it can get hotter in the car than it is outside?
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Jul
20
answered How is it possible that it can get hotter in the car than it is outside?
Jul
20
comment Force to deflect ball colliding with wall
Well, there are other expression of force - but all include the time in some way or another, because force fundamentally depends on time. I wouldn't know about meteorites. It is interesting, though - do you have an example of an article that actually gives the force done on Earth at impact?
Jul
20
comment Force to deflect ball colliding with wall
@Fabio It then depends on the elasticity of the ball. To say "the ball is elastic" is not enough; you need to know how elastic. You cannot avoid the time (or something in that relation, like the elasticity you are talking about) to find the force, because the force done depends on the duration.
Jul
20
revised Force to deflect ball colliding with wall
added 99 characters in body