Elementary natural philosophy : designed for high schools and academies (1881)
Griffin, La Roy F. (La Roy Freese), 1844-1916 · Philadelphia : Sower, Potts & Co. · leaf 135
s, similar to thoseof strings. The particles of air at the node do not changetheir position, but there is at that point an alternate con-densation and rarefaction. Atthe loop, the density of the airdoes not vary, but the particlesmove back and forth througha distance proportionate to thenumber of… … 126 ACOUSTICS. loop. A thin membrane is stretched over the hole, and a gas pipe isattached, with a jet, as shown in the figure, fastened to the stand. 453. When the air at the node is condensed, it pressesthe membrane forward, closes the opening, and puts outthe light. The jets at the loops…
Physics
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