after switching

Posted by Liu Yi over 6 months ago

the Pythagorean theorem, V 337 is the length of the diagonal (root 337). The ratio of the screen height and diagonal is 9 / 337 v. Next, we are the key to solve the problem. Generally in the industry view, the actual viewing distance is 3-5 times the screen height. 3 times a good spot, if less than this distance will be more tired, and the distance of 5 times to watch the shock. Set the minimum size of A (inches), the maximum size of B (inches), viewing distance of L (cm). Now we can build such an equation. 2.54A * (9 / V 337) * 5=L 2.54B * (9 * 3=L / V 337) available: A=L / 6.226 B=L / 3.736: such as sofa from TV cabinet for a distance of 3 meters, the size range is 48-80 inch tv. Similarly, you can also adjust to the appropriate viewing distance according to the size of the TV at home now. Two, how to choose the TV when you buy a brand and the size of the TV, you can pick up the box. (1) appearance: first look at the TV package is intact, clean and tidy. If there is oil or water stains or tear on the packaging box, which means that the TV in the course of transportation were hit, hit and damp. When the packaging is no problem, you can check the body. See whether the screen surface is smooth and clean, there are no bubbles and scratches, screen phosphor should be uniform. Chassis joints must be tight, no cracks, deformation, plating parts bright, no rust, no burr, decorative pieces complete, suitable for antenna tightness. Switches, knobs, buttons, flexible and reliable, no slippage, loose, stuck and so on. (2) grating: when the power [url=http://cheapplasticwooddecking.com/supplier/2338.html]non slip wood decking case[/url] [url=http://cheapplasticwooddecking.com/supplier/2233.html]make a garden fence out of a pallet[/url] [url=http://cheapplasticwooddecking.com/supplier/2504.html]composite decking vs vinyl[/url]