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coryrc
on May 12, 2014
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Google offering $1M prize for a much smaller power...
That's part of the reason those power lines are steel-cored with copper jackets; the other reason being strength, of course.
votingprawn
on May 12, 2014
[–]
They're Aluminium over a steel core, not copper. A copper over steel version would be significantly heavier.
coryrc
on May 17, 2014
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headsmack
yes, of course.
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