1cm a second? Where'd you come up with that random number?

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1cm/s. Right, that's that all cleared up then. I don't suppose you happen also to know the speed of water molecules in a pipe?

 

I'm just really pleased I moved this silly thread to the Chit Chat forum!

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PIC programmer software, and PIC Tutorials at:
http://www.winpicprog.co.uk

 

After reading some of your posts I wouldn´t expect anything different from you.

The Super Moderator calling this thread a silly thread

Next think I expect from you is to throw me out of this forum

I´ll be pleased if you do so

(My last post as long as you are the moderator)

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Luis German

 

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I do not answer private messages asking for help because no one else can: benefit from advice I may give or correct me if I'm wrong.

Please ask on the open forum if you have a question and I'll be happy to help, if I know the answer.

 

As long as it's actually in the chit-chat forum now I don't feel so bad about leaving one sentance pointless replys.

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Current measured in amps, 1amp = 1Coulum/1sec. 1 coulum = 6.25X10^18Electrons.

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NeoMach

 

The usual analogy is a hose that's already full of electrons....er...water. When new water comes in one end, old water immediately comes out the other due to the interactions of the water molecules (but, not instantly. There is a propagation delay for the effect to travel through the hose). The actual water travels slowly but pressure changes propagate rapidly.

 

THat number sounds familiar to me. I think we came up across it in my second electromagnetics class. Except I think it was more like 2-3cm/s. I forget how we calculated it.

 

according to einstein's laws e[v+phase ]=hc where e=electron charge =1.6x10-19 coulombs phase=work function in volts =6.6x10-34 joule/sec c=velocity of light=3x10+10 so now do your math.ephase=hc/lanbda=12000 armstrong units of course thiese are photons emissions.

 

Eye Captain, I'm givin you all shes got, at this rate she is sure to blow at any moment.


Lefty

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Measurement changes behavior

 

~4cm/s if I remember correctly

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"Everything that is done in the world is done by hope." -Martin Luther
"There are two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle."-Albert Einstein

 

See: http://hyperphysics.phy-astr.gsu.edu...ic/ohmmic.html

In brief, the citation assumes a physical model in which each atom of copper has one mobile electron. There are so many atoms in a wire with a diameter of 1 mm that the wire can pass 1 A with a very low drift velocity.

For example, the aforementioned wire has 6.62X10E20 copper atoms per lineal cm. Assuming one mobile electron per atom, that is equivalent to approximately 100 coulombs of mobile electrons per cm. Thus, a current of 10 A would have a drift velocity of only 1 mm/sec. Of course, that conclusion is dependent on the validity of the assumed number of mobile electrons per atom that are involved during conduction. John

 

Taking this into consideration, if I hooked up each end of a wire one light minute long [according to http://en.wikipedia.org/wiki/Light-minute, the average distance from the Earth to the Sun (or 1 astronomical unit) is about 8.317 light-minutes] to an AC source having a half cycle of one minute, would the wire carry electricity?

 

O.K. i just have had a look at this thread it is a mixture of scientific and silly discussion, any way I think it was earjun who asked that "How an electron get to the destination as soon as we turn on the switch, the destination being at very far?" and there was the answer from luisgerman explaining about electromagantic wave and that stuff ( all these on page 1 of the thread).......
Well I'm not a genius but this is what I was tought in school, an electron enters into conductor from negative terminal of source and at the same time one electron gets out of the conductor at the other end being pulled by positive terminal of the source.Look at the Doc,
If an electron actually travels THROUGH the conductor than that would change the whole atomic structure of the conductor (COPPER), The image explains why the electricity reaches to destination as soon as the switch is closed.

Attached Files

Elctron conduction.pdf (24.3 KB, 11 views)

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CHRIS