Perhaps the easiest way to figure out the optimal screen height is to take your viewing distance from eyeballs to the surface ...

For projection technologies (CRT, LCD, etc.), see rear-projection TV. See data projector. Front-projection TVs can change their screen size by replacing the screen and moving the unit closer or ...

Drop that bottle of Windex and let's talk business. You can still give your TV screen the TLC it deserves. But using the wrong type of cleaner will do more damage than good. With that in mind ...