Hi, Not sure what the question is, but there is a lovely animation of involute profile toothed gears meshing without interference at http://en.wikipedia.org/wiki/Involute_gear.
Namaste,
Mesmer8
I agree, Dadface. All's I meant is that not until we know which charge carrier we are talking about can we have a fair guess about the direction of the flow. It is redundant as the OP discovered to say that the "current flows*" if all one means is that the charge carriers flow. Their...
There is a page on electricity somewhere online written by a former teacher which mentions the awkwardness of the sentence, "Current is flowing (through a circuit)." It is merely a common error in parlance and print to be understood as meaning, "charge flows..."
Indeed, the electron does not...
If all the clocks stop (such as when the power goes out), there is no experimental grounds for thinking that Time, itself, has also stopped. Rather, after the power is restored, one must set his clock forward by the amount of time the power was out. As another example, when the speedometer...
The one thing you can't do in SpaceTime is not travel. Even if we all stood still and didn't metabolize, it would have to be for a certain amount of... Time, for as long as we occupy Space...! *\* We are only able to travel through / on / with / against SpaceTime. No standing Time...
But this is largely your assignment. We should only give you pointers, here - not free homework, yes? (/;
Your pdf indicates that the straight line which is part of the two-line icon for, "capacitor," corresponds with its positive leg (provided that we are dealing with polarized caps). This...
Much of what you ask, if not all of it, is explained at Wikipedia. The contemporary scientific description of gravitation is based on Einstein's Theory of General Relativity and field equations. He didn't know that the Universe was expanding (thought it was static), but he did recognize that...
Yes.
(Remember that visible light is a photon _and_ a transverse eletromagnetic wave, depending on how you measure it. The same is true for other rays. An x-ray is made of photons, and, therefore, is an e-m wave.)
It is difficult to answer these types of questions without access to...
It's true that metals will increase in resistance as they are heated (just the opposite is true of semiconductors), however, the alpha (temperature coefficient) of NiChrome (the same wire used to heat the cutting stylus of a disc mastering lathe, btw) is extremely small. It is about 0.00017...
Is the plastic in contact with the NiChrome when you are measuring the votage?
If not, one might say that your wire is 0.8 Ohms / foot, but that the flow of electrical charge is 25 Amperes. If it is truly 12 Amperes, then the Req of the circuit described is 5.2 Ohms greater than expected...