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Does the electron gun physically move, though? I thought it was fixed and the beam is just steered with magnets.
by thescriptkiddie 11y ago
Does the electron gun physically move, though? I thought it was fixed and the beam is just steered with magnets.
- detaro 11y agoelectron beam would fit better in the sentence
- 0xcde4c3db 11y agoRight; the gun is fixed and the beam is "deflected" (that's the term).
- orangepenguin 11y agoNo the gun does not move. The author appears to have misunderstood this. I don't find it likely that he would have used the words "physically moves to point" if he meant that the electron beam is deflected magnetically. Still, great article.
- blakeyrat 11y agoThe gun fires straight ahead. The electrons it produces are deflected in the desired direction by electromagnets. I don't think it's possible to create a mechanical way of moving the gun fast enough to achieve the needs of even a low-res TV screen. If it was a physical mechanism, you can imagine it'd break all the time.
- schwap 11y agoNot to mention your TV would sound like it was possessed by a banshee from the servo (presumably) noise.
- mchanson 11y agoThere was such a thing as a mechanical television: https://en.wikipedia.org/wiki/Mechanical_television https://en.wikipedia.org/wiki/Mechanical_television
- blakeyrat 11y agoNot one using an electron gun. The article is specifically about CRTs. (Of course I know about mechanical televisions; I just didn't talk about them because they weren't relevant to the topic.)