The ionization method of creating cathode rays used in Crookes tubes is today only used in a few specialized gas discharge tubes such as thyratrons.
32.
Workshops began making specialized versions of Crookes tubes for generating X-rays and these first-generation cold cathode or Crookes X-ray tubes were used until about 1920.
33.
In the mid-nineteenth century, Julius Pl�cker investigated the light emitted in discharge tubes ( Crookes tubes ) and the influence of magnetic fields on the glow.
34.
The medical applications of X-rays created the first practical use for Crookes tubes, and workshops began manufacturing specialized Crookes tubes to generate X-rays, the first X-ray tubes.
35.
The medical applications of X-rays created the first practical use for Crookes tubes, and workshops began manufacturing specialized Crookes tubes to generate X-rays, the first X-ray tubes.
36.
After R�ntgen identified the x-ray Tesla began making X-ray images of his own using high voltages and tubes of his own design, as well as Crookes tubes.
37.
Starting in 1888, Philipp Lenard, a student of Heinrich Hertz, conducted experiments to see whether cathode rays could pass out of the Crookes tube into the air.
38.
The discovery for which J . J . Thomson is best remembered was made after he installed parallel metal plates in a modified Crookes tube, downstream from the anode.
39.
The full details of the action in a Crookes tube are complicated, because it contains a nonequilibrium plasma of positively charged ions, electrons, and neutral atoms which are constantly interacting.
40.
As a result of his Crookes tube investigations, he showed that the rays produced by irradiating metals in a vacuum with ultraviolet light were similar in many respects to cathode rays.
