The Synchrodropper—A Versatile Tool

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Abstract
A usefully stable synchronous water dropper having many uses in demonstration and laboratory work is described. A tuned leaf spring is driven by ordinary 60-cps alternating current power and arranged to dispense serially drops of constant size. By observing these drops with an electronic flash or synchronous motor driven stroboscope during either their free fall or collision, demonstration experiments and measurements can be made. A design for producing uniform drops with a minimum of “jitter” and operating difficulty is given together with appropriate methods for assuring reliable performance.

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