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visits member for 1 year, 11 months
seen Apr 16 at 21:44

BS Physics

MS Computational Neuroscience

PhD Theoretical Neuroscience (pursuing)


Aug
31
comment Would a sea level rise (on the other side of the Earth) if you would dip your finger into the ocean?
Pascal's law assumes the fluid is incompressible. It also requires the fluid be confined.
Jul
28
comment Why does a dielectric have a frequency dependent resistivity?
keeping with a classical treatment, I see it more as a voltage source reversed than a resistor. Either way, you do experience a voltage drop across the dielectric and its proportional to the polarization (so basically compute the potential generated by the polarization.) If you're ok with differential equations, you could model the capacitor and solve for V (t).
Jul
25
comment Mass is a stuff or not?
laymen language often uses mass for "stuff", but in physics it is a property describing inertia (resistance to change in velocity)
Jul
21
comment Would a sea level rise (on the other side of the Earth) if you would dip your finger into the ocean?
I mentioned only spatial decay, not temporal decay.
Jul
21
comment Would a sea level rise (on the other side of the Earth) if you would dip your finger into the ocean?
A formal treatment would rely on Navier Stokes and volume viscocity, but just thinking of the bulk modulus for simplicity as you draw large concentric rings around the point where you put your finger in. The expression (dV/V) dV is change in volume, V is total volume. As you consider larger and larger concentric circles, dV stays the same, but V is getting larger, so the ratio dV/V is getting smaller, thus dP (change in pressure) is getting smaller as you go further away from the perturbation point.
Jul
18
comment Would a sea level rise (on the other side of the Earth) if you would dip your finger into the ocean?
True, I assumed the question was about the steady state solution after all the transients have passed.
Jul
17
comment In a large city how much hotter on average is it outside due to the air conditioning of all the buildings?
good question. I speculate that it's not a significant contribution.
Jul
9
comment Kolgomorov entropy issues
maybe you could break this question into several questions? Some people might only be able to answer one of your questions and those don't feel it's appropriate to answer this thread.
Jul
9
comment What are the *necessary* conditions to deterministic chaos?
Also, the chaotic manifold doesn't need to be an attractor, it can aslo be a chaotic saddle (leading to transient chaos).