Lynde, Carleton John, b. 1872 · New York : Macmillan · leaf 291
Fig. 203. — Sound doesnot travel through avacuum. 276 PHYSICS OF THE HOUSEHOLD and then comes to rest, but the compression moves out indef-initely. This is true also when sound travels through soUdsor liquids. When a gun is discharged, only one wave is produced, andtherefore only one sound is… … Fig. 204. — Illustrating sound waves. waves travel out in all directions, and when they fall upon theear produce a series of sounds. What is sound ? — A sound, then, may be defined as anyvibration, in a solid, liquid, or gas, which has sufficient energyto affect the ear. Nature of sound waves. —…
Physics · Home Economics
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