Multi-Anodal Crookes Tube
|
Laboratory demonstration Crookes tube, with
one concave cathode (unlike
early Crookes tubes where the cathode was flat), and
three short, spherically tipped anodes.
Undated, possibly early 20th Century.
|
|
Under high vacuum, the cathode ray beam (the
electron beam), would hit the glass wall of the bulb opposite the cathode,
irrespective of the position of the activated anode. With a lower vacuum, the
electron beam would deviate towards the activated anode, or split into three
beams when the three anodes are simultaneously connected. |
| Previous | Next | |
 |
 |