die aufhebung der schwerkraft\nmetal ball with holes through it, slipped onto glass rod and floats up and down on it\nh. f. c. suhr\naufhebung der schwerkraft\nfriedrich "fritz" hügli
1898
der zauberspiegel H. F. C. Suhr
Die Aufhebung der Schwerkraft
metal ball with holes through it, slipped onto glass rod and floats up and down on it
zero gee\nlunaball (scientific toy), light metal sphere with magnetic outer surface, close-up levitation\nkarl fulves\nbabel\nkarl fulves
1975
the pallbearers review vol. 9-10 Karl Fulves
Zero Gee
Lunaball (scientific toy), light metal sphere with magnetic outer surface, close-up levitation