There are actaully a number of things to consider. One is the drift velocity of the electrons but, in practical circuit analysis, that's meaningless.
If thats the case how do you explain the resistance of a conductor.?
Wow! You're making me work here to "requote" your comments in quotes but, I think I've got it.
As I understand it, electrical resistance comes from two things. One is the number of electrons available for current flow (cross sectional area) and the other then ease (or reluctance) that a material exhibits in releasing it's valence electrons.
Now, that raises yet another, related issue. There is a phenomena that applying a magnetic field to some materials doesn't change the resistance but, it does change the rate at which a signal can propagate along the material (it's called a magneto-restrictive material). I used to have a delay line that worked that way and I sure wish I knew whatever happened to it! It was really neat to play around with. I don't know that (or if) that effect changes the electron drift rate at all.
Rules for the thread could be that you have to quote the last thread posted, show all editorial changes in brackets, describe all editorial changes in double brackets, and note the date of all posts copied and pasted in double brackets. Can anyone think of any other rules? It could be like Wikipedia, except with fewer rules.Why dont you start the thread you mentioned.?
Rules for the thread could be that you have to quote the last thread posted, show all editorial changes in brackets, describe all editorial changes in double brackets, and note the date of all posts copied and pasted in double brackets. Can anyone think of any other rules? It could be like Wikipedia, except with fewer rules.
As I posted previously the +V removes electrons from the conductor and the -V injects electrons into the conductor as soon as the voltage is applied to the loop.
This causes the potential gradient in the conductor to be applied close to the speed of light and would exist as long as the voltage is applied.
I would say that the free electrons would drift along the conductor.
The physicists tell us this the drift in the order of inches/hour
hmmm...., so it is the electric field that energies the device (say an LED ) causing it to function "almost" immediately and not the physical flow of electron, but then why a P-N junction transistor works so faster ? ?
Hi crashsite,
I got that, it is the same as I understood but just needed fine confirmation thanks, and I also thanks to you too Eric,
BTW: HOLES is the term used to represent the absence of electron, nothing physically exist, I had rad in an instrumentation book where the author explains the definition of THEORY, it says that any scientific theory is just the MOST SUITABLE IMAGINATION through which we can explain the lows of nature but, it is not necessary that things should actually work as the THEORY explains it, Think of that famous Large Hadron Collider experiment where they are still trying to find the lost 70% of universe while we still use the basic gravitational lows for calculation even when they are largely inappropriate at cosmic level, I WONDER THEN WHAT IS THE ULTIMATE SCIENCE AND TRUTH !
Well...we could all be required to type only left-handed....
Even If you knew how to develop a left-handed keystroke pattern recognition program, I don’t know that detection would be legal!
Is there a relationship between the length of a wire through which AC can travel and the cycle of the AC? In other words, is it possible for whatever is alternating in AC to alternate so quickly that whatever it is starting out on one end of the wire comes back, or alternates, so quickly that it never reaches the other end of the wire?
I didn’t realize that you had come up with a realistic rule. So far, I’m the only one who has voted against it.It would be the honor system....
i remember having to calculate current velocity in a circuits class once, i forget the details though.
...the posibilities of trying to tap into that energy in novel ways...
If you haven’t already heard, click here to see the New Sony Bio-Battery that Runs on Glucose: https://www.youtube.com/watch?v=gl3Yn-BPWw8.
These are no good...I bought one and it turned out to be diabetic.....
Hehe, very good :Þ
They made this one sideways but you don't have to join...Just imagine if it was not open and the gas had no escape.. A smoke bomb when in can vent, something very much different when it can't...
https://www.youtube.com/watch?v=m903HoTnk80
Wow...there were so many things wrong with that video.
**SNIP**
Two questions come to mind while watching the posted video (without audio because I was in a public place) – what types of combustion are best for harnessing pressure, and why are so many pictures taken of the smoke in the road? Also, in what ways can heat energy be harnessed? One person was able to provide what seemed like a really good explanation of why heat can’t be used as an energy source in terms of entropy and enthalpy (which is a little too much for me to try and explain right now), but, then again, heat rises in one direction.other "sugar bomb" videos
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