How do plasma TVs work? I James May Q&A I Head Squeeze

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So how do plasma TV’s work? Believe it or not the concept of plasma displays had been invented as long ago as the 1930’s, Not quite 21st cutting edge technology! The idea is that instead of using electrons to create lines, the plasma screen uses three fluorescent light cells, one in each primary colour.

Plasma displays are considerably shallower than older TVs, you can mount them on a wall and conveniently hide them behind a well-placed curtain. They can also be scaled up by adding more pixels and enough power to run them. The biggest plasma TV we found was a 152 inch! That’s pretty much 3 meters long and will set you back a measly £380,000.

I bet your TV is not as big as 152 inches! If you enjoyed this vid then why not give us a thumbs up or share it with your friends.

If that didn’t satisfy your quest for knowledge, James explains how quartz watches work in this vid:

Matt Parker’s Pixel Wars

James May’s Q&A – How Does A Quartz Watch Work

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35 thoughts on “How do plasma TVs work? I James May Q&A I Head Squeeze

  1. Ahhh the good old days when I would pause the porno and fall asleep wake up and have a burn-in that I would have to explain to my guest.

  2. CRT's use Red Green and Blue phosphors to produce color. Scaling up the size of a CRT width wise did not proportionally effect the depth. Larger units weren't all that deeper than their smaller counterparts especially in the late days of the technology. Also RGB triads on a Slot/Shadow Mask display are not pixels as they're not individually addressed and not digital, they are analogue. Either way entertaining video.

  3. I still own a Plasma, I barf everytime I see the motion resolution of a modern panel, we need low persistent panels to be a thing soon for TV's!

  4. we have studied in video engineering red ,blue and green electron gun.but here you said in video at 1:17 red ,blue and yellow.

  5. Red Blue and Green NOT Red Blue Yellow I have never seen a TV with a yellow gun or a yellow pixel if you can call them pixels RGB

  6. Tv and monitor displays always use red, green and blue. These are the cone colours in our eyes and no other combination will work, since this is additive colour mixing of lights. Yellow is only used in paints and dyes, along with cyan and magenta; which is subtractive colour mixing. A very fundamental misunderstanding in this video.

  7. Plasma leak on my TV, hole in the floor, went to the diy-store and picked up a can of plasma, topped of the TV, and it's all good again.

  8. The real secret may be changing to PAL blue. That's what PAL did different that really matters. Update rates based on multiples of 52 Hz? That, too.

  9. The superfluous diode in the circuit design (OrCAD drawing) of plasma screen televisions prevents them from being powered by PoE by an HDPP cable (high definition point to point).

  10. MASSIVE amount of half knowledge here in the comments! I wish the video had ended at 0:16 with 5‘ of credits! Anyway that Snooker joke was sweet….

  11. Red, blue and yellow? I thought it was red, blue and GREEN. Oh well… BBC is going down hill, right to the level of Discovery and History Channel.

  12. Actually color CRT's had Red, Blue and GREEN electron guns, not yellow. Red, Blue and Yellow are indeed Primary Colors out of which all other colors are derived, but that's not how a CRT works.

  13. i think it is not RYB (read, yellow and blue)!! it is RGB color which is Read, Grean and Blue. with thanks to your video

  14. Question – can I lay my 40" plasma flat screen up to make a virtual pinball , will it still work ?

  15. Plasma displays are more brightly lit than LED, which makes it easier to watch daylight or rooms with a lot of light, but in dimmed lighting, darkness, or darkened rooms, LED has better and more accurate colours, whereas plasma tends to produce faded and blended colours (which incidentally also means images on plasma screens tend to look less pixelated than on LED screens). Incidentially, plasma TVs are mostly popular in America where they were invented, but since NTSC can't reproduce colours properly – or even the entire colour spectrum visible to the human eye – you'd be hard pressed to see any real difference between the same NTSC TV signal reproduced on a plasma screen versus a LED screen.

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