Bland & Long
Published: 2013-09
Total Pages: 54
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1854 edition. Excerpt: ...3J feet long and 3 feet wide 4 14s. 6d. and 6 0 0 ACOUSTICS. This section treats of those Instruments that illustrate the nature and properties of sound, and the variation it undergoes in quality aud intensity under different circumstances. Beli, with pendulum escapement attached to the hammer, for striking the Bell under the receiver of an Air Pump, to show the effect of atmospheres of different density on the conduction of sound 110 Sliding-tube arrangement, for increasing the intensity of the sound, in addition to the foregoing experiment. 2 12 6 Model, to show the composition of different modes of undulation, and for showing the normal or transverse undulations in a row of particles., 4 14 6 Apparatus, formed of two series of curves drawn on a revolving cylinder, for showing progressive and stationary longitudinal undulations in a row of particles.... 3 13 0 Kaleidophone.wheatstone's, for showing experimentally the principle of super-position of small motions, 10s. 6d., iSl. 1s., and 1116 Monoohord, an instrument for exhibiting the relation and subdivision of musical sounds, 2 2s., ' 3 3s., and 5 5 0 Ditto, with arrangement for regulating the tension of a chord.. A 14s. 6d., 5 10s. and 7 7 0 Apparatus, forshowing the reflexion and propagation of a wave, and the conversion of progressive into stationary undulations... 1s., 2 2s., and 3 3 0 Apparatus, Biot's, for producing a grave harmonic from a siugle string... 15s. and 10 0 By the arrangement of this instrument a note can be produced one-fifth below that natural to the chord. Apparatus for showing the production of subordinate sounds or harmonics with a single string, with shifting weight.. 10s. 6d. and 0 15 0 s. d. Apparatus for...