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what does 120hz mean

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When looking at the specifications to an HDTV, such as an LED LCD TV, you may notice numbers such as: 60Hz, 100Hz, and 240Hz. These numbers refer to the refresh rate employed by the televisions picture displaying technology. The higher the number, the quicker the refresh rate of the picture on screen is. When an LCD TV has a slower refresh rate, such as 60Hz, fast movements in the televisions picture may be blurred as the TV refreshes the screen. This blur is sometimes called 'HDTV blur', and can be eliminated for the most part with 100+ Hz technology. To learn more about the different HDTV refresh rates and how they effect the televisions features, visit: http://www.ask.com/wiki/HDTV_blur#100.C2.A0Hz_.2B.

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