Crookes tube with a Maltese Cross


Crookes tube with a Maltese Cross.  (Crookes nr 9) 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.

SKU: 00 400619 UG S Categories: ,

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