They proved what Crookes had surmised about the radiations he discovered in his vacuum tube.
Fluorescence is most efficiently excited by the cathode rays of a vacuum tube.
If that were true a vacuum tube structure could eventually be devised to do anything a man could do.
The terms usually apply to conductors leading the current through a liquid or gas, as an electrolytic cell, or vacuum tube.
The effect has been observed independently by Lo Surdo whilst working on the positive rays in a vacuum tube.
The electric spark, the arc, the electric discharge in a vacuum tube, and the flame are the means usually employed.
This is the reason the vacuum tube amplifies as well as detects.
The apparatus used for the purpose consists of a vacuum tube mounted in the usual way upon a horizontal axis capable of rotation.
The way a grid leak and vacuum tube detector with a one-step amplifier are connected up is shown at A in Fig. 44.
So engrossed were the boys in the problem of the magnet and vacuum tube that they forgot all about Herb and his experiments.
|vacuum tube |
An electron tube from which all air has been removed. The vacuum ensures transparency inside the tube for electric fields and moving electrons. Most electron tubes are vacuum tubes; cathode-ray tubes, which include television picture tubes and other video display tubes, are the most widely used vacuum tubes. In other electronic applications, vacuum tubes have largely been replaced by transistors.