color tube

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color tube

A child watches a cartoon on a color tube television.

Definition
  1. Noun:
    • A television tube that displays images in full color: A "color tube" is the cathode-ray tube (CRT) component inside a television set or monitor that is capable of producing a full-color image. It works by using three electron guns (for red, green, and blue) to illuminate phosphor dots on the inside of the screen.
Usage Examples
  • Noun:
    • The old television's color tube began to fade, making the picture look dim.
    • Replacing the color tube in a CRT monitor was often an expensive repair.
Advanced Usage
  • Technical Context: In electronics and repair, "color tube" specifically refers to the picture tube in color television sets and computer monitors manufactured before the widespread adoption of flat-panel displays (LCD, plasma).
    • The technician diagnosed the problem as a failing yoke on the color tube.
Variants and Related Words
  • Color CRT: An acronym for "Color Cathode-Ray Tube," a more technical synonym.
  • Picture tube: A more general term that can refer to both monochrome and color television tubes.
  • Trinitron: A proprietary type of aperture-grille color tube developed by Sony.
  • Shadow mask: A key component inside a color tube that helps align the electron beams.
Synonyms
  • Color picture tube
  • Color CRT
Notes on Meaning
  • The term "color tube" is largely historical and technical, as modern displays (LCD, LED, OLED) do not use cathode-ray tubes. It refers specifically to the vacuum tube technology used in color televisions and computer monitors for much of the 20th century.
color tube

A child watches a cartoon on a color tube television.

Noun
  1. a television tube that displays images in full color