Abstract
III. Experiments by which Compound Sounds are analysed by viewing in a Rotating Mirror the Vibrations of Konig's Manometric Flames.
TAKE a piece of pine board, A, Fig. 15, I inch (25 millimetres) thick, 11/2 inch (38 millimetres) wide, and 9 inches (22.8 centimetres) long. One inch from its top bore with an inch centre-bit a shallow hole 1/8 inch deep. Bore a like shallow hole in the block B, which is 3/4 inch thick, 13/4 inch wide, and 2 inches (51 millimetres) long. Place a 1/2-inch centre-bit in the centre of the shallow hole in A and bore with it a hole through the wood. Into this fit a glass or metal-tube, .as shown at E. Bore a -33/16-inch (5 millimetres) hole obliquely into the shallow hole in B, and into this fit the glass tube C. Then bore another 3/16-inch hole directly into the shallow hole in B. Put a glass tube in a gas or spirit flame and heat it red-hot at a place about two inches from its end. Then draw the tube out at this place into a narrow neck. Make a cut with the edge of a file across this narrow neck, and the tube will readily snap asunder at this mark. Then heat a place on the tube in a flame, and here bend it into a right angle, as shown at D, Fig. 15. Now fit this tube into the hole just made, as shown at D. These tubes may be firmly and tightly fitted by wrapping their ends with paper coated with glue before they are forced into their holes.
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ON THE NATURE OF VIBRATORY MOTIONS 1 . Nature 18, 648–650 (1878). https://doi.org/10.1038/018648a0
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DOI: https://doi.org/10.1038/018648a0