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Cathode ray tube



A high vacuum exists within all CRT monitors. If the outer glass envelope is damaged, a dangerous implosion may occur. Due to the power of the implosion, glass may explode outwards. This shrapnel can travel at dangerous and potentially fatal velocities. While modern CRT used in televisions and computer displays have epoxy-bonded face-plates or other measures to prevent shattering of the envelope, CRTs removed from equipment must be handled carefully to avoid personal injury.

Early TV receivers had safety glass in front of their CRTs for protection. Modern CRTs have exposed faceplates; they have tension bands around the widest part of the glass envelope, at the edge of the faceplate, to keep the faceplate's glass under considerable compression, greatly enhancing resistance to impact. The tension in the band is on the order of a ton or more.

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See also

Electronics Portal

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References

  1. ^ http://www.taschenfernseher.de/bilder/sony-flat.jpg
  2. ^ http://www.ebeaminc.com/images/cap02.jpg
  3. ^ Cathode Ray Tube. Medical Discoveries. Advameg, Inc. (2007). Retrieved on 2008-04-27.
  4. ^ "The basics of TV power", CNET, 2007. Retrieved on 2007-01-13. 
  5. ^ 14 Gaming Myths Exposed. GamePro.com (February 15, 2007). Retrieved on 2007-08-15.
  6. ^ Wong, May. "Flat Panels Drive Old TVs From Market", AP via Excite News, October 22, 2006. Retrieved on 2006-10-22. 
  7. ^ "The future is flat as Dixons withdraws sale of 'big box' televisions", London Evening Standard, November 26, 2006. Retrieved on 2006-12-03. 
  8. ^ VDU work and hazards to health Retrieved on 2008-02-29
  9. ^ advert for EMF bioshield
  10. ^ SUBCHAPTER J--RADIOLOGICAL HEALTH (21CFR1020.10). U.S. Food and Drug Administration (April 1, 2006). Retrieved on 2007-08-13.

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External links

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