Cathode-ray tube
part · 1897 · Electric age
A picture tube in which an electron beam draws the image (Braun).
Principles and materials it uses
- Electromagnetism — uses. The beam is deflected by a magnetic field.
- Glass — is made of. A picture tube is a glass bulb.
- Vacuum — uses. Inside is a vacuum.
Where it is used
- Monitor — is part of. The first monitors were CRTs.
- Television set — is part of. A picture tube.
- Oscilloscope — is part of. The first ones used CRTs.
- Sketchpad — is used in. A CRT screen.
- Arcade machine — is part of. A CRT monitor.
History: what it evolved from and what it influenced
- Electron — evolved into. Thomson discovered the electron in cathode rays.
What it is a kind of
- Vacuum tube — is a kind of. An electron vacuum device.