頻閃觀測器

頻閃觀測器是一個可以轉動的圓盤,圓盤上有狹縫,能發出脈衝光。頻閃觀測器大多用來量度水波腦波頻率

頻閃觀測器

頻閃觀測器(Stroboscope)又稱同步定時儀,可測量反覆運動所需的時間。

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