Dot is measured in millimeters (mm), and indicates the diagonal distance between same-colored phosphor dots on the screen.
像素点以毫米为单位，表示屏幕上相同颜色的磷光点之间的对角线距离。
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Lower resolution can be effectively used with larger screen; this will help those short-sighted users, and allows the user to read screens from a farther distance.
These subtended angles correspond to a viewing distance of roughly 2.2 times the screen width at the back row of the seating down to 1.5 times the screen width at the front.