Oxford Electric Bell(en.wikipedia.org)
16 points by gurjeet | 1 comments
First screen, captured .
Looks similar
Pyrophone(en.wikipedia.org)
71 points by drdee | 13 comments
Vacuum airship(en.wikipedia.org)
87 points by guerrilla | 56 comments
Armstrong Effect(en.wikipedia.org)
36 points by userbinator | 2 comments
Artificio de Juanelo(en.wikipedia.org)
86 points by benbreen | 10 comments
