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by Helioaeolian
Thu May 06, 2010 8:08 am
Forum: Hover Tank Challenge
Topic: Very old technologies
Replies: 3
Views: 16310

Very old technologies

First-time poster anywhere. Sorry if this runs long, but I've been digesting everything that went before. I've got a suggestion for making metal float that comes from a 17th century illustration I saw in a history of flight. It showed a wooden boat suspended from four copper spheres that enclosed a ...