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$0
$1,050
測量單擺擺動與時間、擺繩長度與擺質對時間的關係比較實驗。
配件：大型三腳台及鐵架，銅、鐵、鋁同直徑的圓球各一個，附繩及固定夾一個。
The pendulum clamp connects to a vertical steel rod support. Up to 3 pendulums can be connected on the same horizontal line, includes one set of iron/brass/aluminum balls.
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