Wide-screen TV-viewing distances
With wide-screen sets showing DVD or HDTV, you can sit as close as 1.5 times the screen's diagonal measurement and not notice any loss in quality, while sitting farther away than three times the screen size means you're likely to miss out on the immersive feel. Here's a rundown of minimum and maximum recommended viewing distances for wide-screen sets.
16:9 TV diagonal screen size Min. viewing distance Max. viewing distance
(in metres) (in metres)
26 1 2.0
32 1.2 2.3
37 1.3 2.6
42 1.6 3.2
47 1.8 3.6
50 1.8 3.8
55 2.1 3.9
60 2.3 4.6
65 2.5 4.9
LCD - Liquid Crystal Display
LCD's are colour television sets which use LCD technology to produce images. LCD televisionsare thinner and lighter than CRTs (Cathode Ray Tubes) of similar size, and are available in much larger sizes.This combination of features made LCDs more practical than CRTs for many roles, and as manufacturingcosts fell LCD became increasingly dominant.
PlasmaA plasma display panel (PDP) is atype of flat panel display common to large TV displays (32" inches or larger). Many tiny cells between two panels of glass hold an inertmixture of noble gases. The gas inthe cells is electrically turned intoa plasma which thenexcites phosphors toemit light. Plasma displays should not be confused withLCDs, anotherlightweight flatscreen display usingdifferent technology.
High-definition television (or HDTV)is a digital televisionbroadcasting system with higherresolutionthan traditional television systems (standard-definition TV, or SDTV).HDTV is digitally broadcast; the earliest implementationsused analog broadcasting,but today digital television (DTV) signals are used, requiring lessbandwidth due to digital video compression.