Tube étincelant (tube scintillant, serpent électrique)
Scintillating tube (Sparkling tube, Fulminating tube, Electric serpent)
Funkelnde Röhre

These tubes were popular in the late eighteenth century because of the spectacular effect that they produced in the dark. The sparkling tube consists of a long glass tube to which a series of tin foil leaves are attached. They are rhomb-shaped and placed in a helical form one after another along the outside of the tube. When one end of the tube is held in the hand and the other approaches the prime conductor of an electrical machine, scintillating sparks appear between each of the tin-foil patches, producing a long helix of fire.

 

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Longueur • Length • Länge : 25 cm • 9" 7/8
Diamètre • Diameter • Durchmesser : 11 mm • 7/16"

 

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