On Tue, Oct 04, 2011 at 12:44:01AM +1100, Scott Ferguson wrote:
> Electricity didn't go much of anywhere without AC - I recall Edison
> tried with DC. Can't remember alternators - would that be Seimens??

For crossing "large" distances DC is used, whereas AC is more useful for
local distribution.

Interesting reads:

http://cityroom.blogs.nytimes.com/2007/11/14/off-goes-the-power-current-started-by-thomas-edison/

http://science.slashdot.org/story/07/11/16/225213/the-last-dc-power-grid-shut-down-in-nyc

-- 
"Religion is excellent stuff for keeping common people quiet."
   -- Napoleon Bonaparte


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