Réunion de quatre appareils pour expériences électrostatiques... Lot n° 36

Set of four devices for electrostatic and dynamic experiments - A Crookes Maltese cross tube 16 x 24 cm - A vertical Crookes tube or electric egg H. 43.5 cm - An X-ray tube L. 33 cm - A glass drill to demonstrate the mechanical effect of electric discharges 24 x 18 cm Late 19th - early 20th century