What is a cathode ray tube?

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  • 1 month ago

    An old style TV used them

    Attachment image
  • 1 month ago

    a thingy that..um 

     does stuff.

  • 1 month ago

    its basically a tube that shoots rays

  • 1 month ago

    A proper explanation would take many pages worth of typing. 

     

    Look it up on Wikipedia. 

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  • David
    Lv 5
    1 month ago

    It's a tube with a cathode that shoots rays.

  • khalil
    Lv 7
    1 month ago

    it was used in old tvs ....

    it had a yoke for sweeping electrons ... left to right and bottom to top

    it emits electrons ,,, depending on the video signal level,the electrons get velocity...higher levels make the screen white ... lower ones make black and between them makes gray ...so a staircase video will show eight bars from  white to black on the screen

  • 1 month ago

    It is a vacuum tube inside the a old box television set.

    It has three laser guns that shoots ions into the phosper thus creating an image on the screen.

  • 1 month ago

    Except for some special applications the "CRT" was made a dinosaur with the coming of LED and flat panel.

    https://en.wikipedia.org/wiki/Cathode-ray_tube

    Guess those old TVs that took at least 2 people to lift was before your day.

  • 1 month ago

    The cathode-ray tube (CRT) is a vacuum tube that contains one or more electron guns and a phosphorescent screen and is used to display images.  It was mainly used on old televisions, computer monitors, radar, and sonar

  • .
    Lv 7
    1 month ago

    Googling is your friend, try it

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