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Why Widescreen?
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How is screen size measured?

TV screen size is measured diagonally, from one top corner to the opposite bottom corner. In addition, it's takes into account the entire screen, not just the viewing area. In the case of regular CRT televisions, your viewable area may be an inch or more less than the measured size.

Because TV's are measured diagonally, the height of a widescreen TV will be less than that of a standard SD television with the same diagonal measurement. This means, if you watch a lot of standard definition television, make sure you get a widescreen TV with a larger diagonal measurement when you upgrade in order to maintain the same image size for those shows. The bonus will be that widescreen programming, such as HDTV or DVD movies will be larger than on your old TV.

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