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CRT(Cathode Ray Tube): The most common screens are direct-view CRTs for up to 40 in (100 cm) (in 4:3) and 46 in (115 cm) (in 16:9) diagonally. These are the least expensive, and are a refined technology that can still provide the best value for overall picture quality. As they do not have a fixed native resolution, they are capable of displaying sources with a variety of different resolutions at the best possible image quality. The frame rate or refresh rate of a typical NTSC format CRT TV is 60 Hz, and for the PAL format, is 50 Hz. A typical NTSC broadcast signal's visible portion has an equivalent resolution of about 640x480 pixels. It actually could be slightly higher than that, but the Vertical Blanking Interval, or VBI, allows other signals to be carried along with the broadcast.

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1. Television
   
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Latest Articles on Television & Radio

1. Haunted Movie Sets And Ghostly Encounters
   You have probably heard about the fact that a number of people died who were involved in this movie- Seven to be exact. Carol Anne (Heather O’Rourke) was only twelve when she died during a bowel obstruction surgery. Dominique Dunne was strangled by her boyfriend at just 22. Will Sampson died from a heart-lung transplant at 53. Brian Gibson and Julian Beck both died of different types of cancer....
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   CRT(Cathode Ray Tube): The most common screens are direct-view CRTs for up to 40 in (100 cm) (in 4:3) and 46 in (115 cm) (in 16:9) diagonally. These are the least expensive, and are a refined technology that can still provide the best value for overall picture quality. As they do not have a fixed native resolution, they are capable of displaying so...
8. Television Invention
   The television was not invented by a single person, but by a number of scientists' advancements contributing to the ultimate all-electronic version of the invention. The origins of what would become today's television system can be traced back as far as the discovery of the photoconductivity of the element selenium by Willoughby Smith in 1873 follo...
9. Television
   Television is a telecommunication system for broadcasting and receiving moving pictures and sound over a distance. The term has come to refer to all the aspects of television from the television set to the programming and transmission. The word is derived from mixed Latin and Greek roots, meaning "far sight": Greek τῆλε "tele",...

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