color tube
Definition
- 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.
Noun
-
a television tube that displays images in full color
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