Way back in the 17th Century German scientist Otto von Guericke demonstrated the power of vacuum forming by joining two steel half domes that two teams of horses pulling in opposite directions could not pull apart. In this video, MAKE Contributing Editor William Gurstelle recreates the experiment with two cake pans. And you can, too, in this easy to follow experiment.
This is about the power of vacuum, not the power of vacuum forming, yes?
The spheres were copper, not steel.
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