Finally, we've got that sorted out.
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Tuesday, 5 April 2011
3 comments:
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That was *awesome*! You need to post more of those kinds of videos!
ReplyDeleteWhat? How Things Work? I thought that's what posting series like Civilisation (going through it an episode or two at a time) is all about.
ReplyDeleteFunnily enough, the differential gear is originally a Chinese invention. It was first used on a mechanical compass, the "south-pointing chariot".
ReplyDelete