gas x-ray tube with 4.5" spherical bulb
Date: 1900-1920
Inventory Number: 2008-1-0012
Classification: Discharge Tube
Dimensions:11.3 x 20 x 40 cm (4 7/16 x 7 7/8 x 15 3/4 in.)
bulb: 11.3 cm (4 7/16 in.)
Description:
Unusual x-ray tube. Three electrodes, one of which (anti-cathode) reaches into center of bulb. Bulb is not sealed--one leg (with 2" mouth) is stuffed with tissue paper to keep dirt out but paper can be easily removed presumably for connecting to a vacuum pump.