Why can a higher screen refresh rate make scrolling look smoother?
Show answer & explanation
Answer: It lets the screen show more intermediate positions each second
It raises brightness so moving objects become easier to see — A higher refresh rate does not by itself mean a brighter screen. Brightness describes light output, while refresh rate describes how often the image can update. More frequent position updates are what can make scrolling smoother.
It adds more pixels so each moving object becomes sharper — A higher refresh rate does not add pixels to the screen. Resolution determines how many pixels make up an image, while refresh rate determines how frequently it can change. A screen can be sharp but still show jerky motion if updates are infrequent.
It lets the screen show more intermediate positions each second ✓ — A faster refresh rate lets a screen show more updates per second, making the jumps between an object's displayed positions smaller. That benefit requires the device to supply enough new frames. A 120 Hz display does not turn a 24-frame-per-second video into 120 distinct pictures by itself.
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