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[Reddit] Free online Basics of Electronics e-book. - Adventures in Engineering — LiveJournal
The wanderings of a modern ronin.

Ben Cantrick
  Date: 2006-11-18 17:12
  Subject:   [Reddit] Free online Basics of Electronics e-book.
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A noteworthy observation may be made here. As each electron moves uniformly through a conductor, it pushes on the one ahead of it, such that all the electrons move together as a group. The starting and stopping of electron flow through the length of a conductive path is virtually instantaneous from one end of a conductor to the other, even though the motion of each electron may be very slow. An approximate analogy is that of a tube filled end-to-end with marbles:

The tube is full of marbles, just as a conductor is full of free electrons ready to be moved by an outside influence. If a single marble is suddenly inserted into this full tube on the left-hand side, another marble will immediately try to exit the tube on the right. Even though each marble only traveled a short distance, the transfer of motion through the tube is virtually instantaneous from the left end to the right end, no matter how long the tube is. With electricity, the overall effect from one end of a conductor to the other happens at the speed of light: a swift 186,000 miles per second! Each individual electron, though, travels through the conductor at a much slower pace.


http://www.vias.org/feee/basiccon_03.html


I haven't gotten into the later sections, but it looks pretty good from the first few chapters.
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Ben Cantrick
  User: mackys
  Date: 2006-11-19 00:48 (UTC)
  Subject:   (no subject)
Hm, okay, well, I think it was a bad idea to get into the specifics of SPICE in the second chapter of the book. WinBreadBoard is a much better program for beginners.
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Not Matt
  User: jameshroberts
  Date: 2006-11-19 01:25 (UTC)
  Subject:   (no subject)
So, the internets ARE a series of tubes . . .
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Ben Cantrick
  User: mackys
  Date: 2006-11-19 03:03 (UTC)
  Subject:   (no subject)
BIG, TANGLED tubes!
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Triggur
  User: triggur
  Date: 2006-11-19 04:06 (UTC)
  Subject:   (no subject)
...thus setting up the analogy promulgated by mister Stevens:

The internet is a series of tubes.

He just forgot to mention the marbles.
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Willow: Happy Willow
  User: willow_red
  Date: 2006-11-19 17:57 (UTC)
  Subject:   (no subject)
Keyword:Happy Willow
He just forgot to mention the marbles.

That's because his are long gone...
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Willow: Akito
  User: willow_red
  Date: 2006-11-19 18:00 (UTC)
  Subject:   (no subject)
Keyword:Akito
This looks good, thanks for posting the link!

*bookmarks and sends to self for work reference*
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