A text-book on chemistry. For the use of schools and colleges (1866)
Draper, Henry, 1837-1882 · New York, Harper & brothers · leaf 116
its horizontal position. Take two tuning-forks of the same note,and fasten by a little sealing-wax on oneprong of each a disc of cardboard half aninch in diameter, as seen in Fig. 78, a. Makeone of the forks a little heavier than the oth-er by putting on the end of it a drop of thewax. Then take a… … 104 TWO SOUNDS PRODUCE SILENCE. ing made one of the forks vibrate, hold it over themouth of the jar, as seen at c?, its piece of cardboard be-ing downward; commence pouring water into the jar,and the sound will be greatly re-enforced. It is the col-umn of air in the jar vibrating in unison with the…
Chemistry · Physics
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