Recent content by hutchphd

I am very confused by much of this colloquy. Can the OP reference a particular section or equation in Griffiths, please? And I am confused by several f the oanswers. Is the charge at the interior center of a conducting shell??? In the limit of zero thickness a dipole layer vanishes (pluses...

I once worked on an external "artificial liver" for acute liver crises caused mostly from ongoing OD from Tylenol The problem with Acetominophen (paracetamol) is the tight long term dose window and its seemingly ubiquitous analgesic use. Folks taking several different meds could get into a...

Ah , Uncle Angus.....I do love the number of descriptors of (often deficient) humans that are availible in Yiddish. A sclemiel is hopeless a schlemazel hapless and we could all use a few more good mensch.

I still think it is closer to "schlemiel" than to "schlimazel" but I'll just stick to the Yiddish. (Its my Scots-Irish roots.) Why look elsewhere?

The thickness of such a slice is known as the sagitta (a term familiar to mirror grinders. @davidjoe you have not said what motivates the question.......

I, too, assumed that this was stipulated by all. Now I am lost in the arguement. Can we just agree that there are local methods to differentiate a radial field from an absolutely uniform one? What else is important here (in fact what is the question??). The OP never indicated the original...

No its OK that is what I meant and the rest was an expansion to include more nuance. Of course the use of the verticle angle of a pendulum (or compare several) would also work. The field of a sphere can be "easilly" distinguished from uniform field in many ways without" looking out the...

Of course a quick high jump will tell you something about the size of your new planet immediately. There are very sensitive gravity meters that can measure nearby mass perturbations. So yes this is possible.

Cyclotron radiation

Scott Manley on the subject of propellants....good stuff .

That's a really good question. be certain to write a summary here when you figure it out ! I feel certain the answer, while unknown to me, is not that difficult. Wet stuff.......

Yes the cycle of an harmonic wave in spacce is called the wavelength. The cyclic in time is called the period. For the OP: these are semantics, do you understand that any f(x,t) of the form g(x-vt) is a traveling wave? Harmonic waves are particularly useful because they are affiliated with...

What does that even mean????......at a fixed point in time nothing moves oscillitory or not. You need to just relax and think a bit..

Why do you think that. Details please.

Yikes you are told in the problem statement: "The travelling pulse is shown at different times. The speed of the pulse is 2m/s. " Relax a little. This is not an inquisition nor is it very complicated (yet).