Submitted by Rear-gunner t3_112tz0i in history
socks t1_j8ml3r6 wrote
Many thanks for this. There's also a Leonardo sub, where I've put this article (via Cal-tech): https://www.reddit.com/r/LeonardodaVinci/comments/112wv59/leonardo_da_vincis_forgotten_experiments_explored/?
[deleted] t1_j8oipsq wrote
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