Vacuum Crookes tube fai clic per ingrandire la foto



The different parts are connected to each other with a progressive reduction in their sections down to the narrow, cylindrical tube, and are 2 cm long, with the exception of the blue one which is 1 cm in length.
The craftsmanship that went into the making is extremely refined and the object also has excellent aesthetic qualities; the effects of discharges on the different kinds of glass, with different shapes and qualities, must have been quite spectacular.