Four Crookes' focus tubes
- Made:
- 1897
Four Crookes' focus tubes in which cathode rays are received on adjustable surfaces
Details
- Category:
- Electricity and Magnetism
- Object Number:
- 1916-33
- type:
- tube
- credit:
- Swinton, Mr. A.A. Cambell
Four Crookes' focus tubes in which cathode rays are received on adjustable surfaces
