720P 片源下的电视尺寸选择
資深大佬 : Jay54520 0
https://www.rtings.com/tv/reviews/by-size/size-to-distance-relationship 中的观点是否合适？
- 角度太小可能会头晕，比如你观看体育赛事时紧盯着屏幕的一部分
This becomes very apparent if you try to watch sports from up close while fixating a single part of the screen, as it gets quite nauseating.
角度指 
该文认为大部分的片源是 4K/Ultra HD，但是在中国，很多中老年人观看的 IPTV 是 720P 。
角度分辨率 = 像素 / 角度，如果太小，就会感觉模糊。在视距不变的情况下，尺寸减小，角度减小，所以角度分辨率增大，从而更清楚。
Sitting close to a 1080p TV will often make it seem like you are watching your TV through a screen door, even if it is playing a high quality 1080p HD movie. By increasing your distance from the TV, the density of the details will also increase, producing a better image. This is the angular resolution: the number of pixels per angle.
我们是否要选择屏幕尺寸来符合下图中的 720P 片源？
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