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  1. Cathode-ray tube - Wikipedia

  2. Television - Picture Tubes, Cathode Ray, Resolution | Britannica

  3. Television History and the Cathode Ray Tube - ThoughtCo

  4. How to Know When Your TV Picture Tube Is Bad - Techwalla

  5. What Is a CRT, and Why Don't We Use Them Anymore? - How-To Geek

  6. Television picture tube | instrument | Britannica

  7. CRT (Cathode Ray Tube) TV Basics - YouTube

  8. How does television picture tube works? - Physics Network

  9. What It Was Really Like To Watch The First Color TVs

  10. Trinitron - Wikipedia