Crookes tube with a Maltese Cross.
The tube demonstrates that electrons go in a straight line and don\’t go through metal. The cross can actually lay down and stand up (mechanically). When the cross lies down, the glass face of the tube emits a green glow when the electrons strike the glass wall, when it\’s right up you will see the shadow of the cross.
Ask the Dealer
Antiques Le St Georges was established By G.Bruguière de Gorgot in 1981 in south of France and now in Barcelona since 2004 .
We are specialized in Antique scientific instruments: Globes and Planetaria, Microscopes, Sundials, Mathematical instruments.
We advise and supply private collections and international museums.
We also buy valuable instruments.
You can visit us at www.globe-antique.com .
Do not hesitate to contact us at email@example.com if you are searching for something in particular, or tel: +34637730240