
Collection of discharge tubes comprising 6 spectrum tubes (Plücker form)


Collection of discharge tubes comprising 6 spectrum tubes (Plücker form), 9 decorative Geissler tubes, 14 (originally 15) tubes to show the fluorescent of various solids, 2 restricted ray tubes, 1 tube to show the rotation of the discharge in a magnetic field


Spectrum tube

Spectrum tube

Spectrum tube

Spectrum tube

Spectrum tube
Geissler tube

Geissler tube
Geissler tube
Geissler tube
Geissler tube
Geissler tube

Geissler tube
Geissler tube
Geissler tube

Crookes vacuum tube containing a mineral sample

Crookes vacuum tube containing a mineral sample

Crookes vacuum tube containing a mineral sample

Crookes vacuum tube containing a mineral sample

Ebert's phosphorescent lamp

Crookes vacuum tube containing a fluorescent 'flower'

Puluj electrical radiometer

Crookes vacuum tube containing a fluorescent screen

Crookes vacuum tube containing a mineral sample
