STEM与日常科技·英语30篇（3）
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Screen Refresh Rate and Motion Blur Perception
屏幕刷新率与运动模糊感知
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A screen's refresh rate measures how many times per second it redraws the image.
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Standard monitors refresh at 60 Hz, while gaming displays often reach 144 or 240 Hz.
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Low refresh rates cause visible 'motion blur' when fast objects move across the screen.
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This happens because the human eye retains images briefly, blending successive frames.
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Higher refresh rates reduce blur by updating positions more frequently and smoothly.
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Response time — how quickly pixels change color — also affects perceived sharpness.
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Smartphones use adaptive refresh rates to save battery while maintaining clarity.
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Video content filmed at 24 or 30 fps may still look smooth on high-Hz screens due to interpolation.
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VR headsets require at least 90 Hz to prevent nausea from lag-induced disorientation.
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Refresh rate matters most in dynamic tasks like gaming, sports viewing, or drone piloting.