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Strategies & Market Trends : 2026 TeoTwawKi ... 2032 Darkest Interregnum -- Ignore unavailable to you. Want to Upgrade?

To: benwood who wrote (63887)	5/26/2010 8:21:46 PM
From: yard_man	Read Replies (1) \| Respond to of 217572

300 million meters long --- 300,000 km?? what?? LOL <g> of course you are right -- the disturbance travels at close to the speed of light -- but that is not on the order of centimeters or millimeters/second that the electrons travel -- I'm picking a nit -- but that's me -- it doesn't have anything to do with propagation delays -- that has to do with the speed the signal propagates -- but you have the order of magnitude way off for the electrons ... here it's even on wiki en.wikipedia.org As a numerical example,for a copper wire of 1 square mm area, carrying a current of 3 amperes, the drift velocity of electrons would be about 0.00028 metres per second (or just about an hour to travel one metre). nice primer here ... hyperphysics.phy-astr.gsu.edu