CATALOGUE.—ACUSTICS, SOURCES OK SOUND.
Tl\e so\md of carbonic acid gas, nitrous gas, and oxygenSis > agreed with the theory; but azote, of which the spe-
cific gravity was . 085 , common air being unity, gave a notehalf
duced
IU
a tone lower than common air. Hydrogen gas pro-
a note an octave or a minor tenth higher.
U
4l
hnve on the sounds from hydrogen gits.Joiun. Phys. LV. 165. Nidi. 8. IV.23. Pli.XIV. 24.
‘ggins on the sound from hydrogen gas.^ieh, 8. I, 129.
tarmonica. Gilb. XVII. 482.
A glass tube sounding while hot.
The a
e “tit in a flute is like a slow river with waves moving
ra pidly along it.
■Got mt o/m. Del A in ve's Memoir on the Sounds produced
ty burning Hydrogen Gas* Journ.R. I. 259.
h ' s Well known, that when a stream of hydrogen gas
^ 5Se * through a small tube, and is inflamed at its orifice,
a large tube be held over the flame so as partially to in-clo.
fte,
Ptodu,
se lt , an agreeable sound is frequently produced. The*l Ut nt failure of the experiment, and the impossibility ofc ' n E the same effect with other kinds of flame, left^hsiderable obscurity with respect to the immediate causethe sound, M. Delarivc appears to have been veryessf ul in his attempts to remove these difficulties. He^P° s es the continual production and condensation of<!Ueous vapour to cause a brisk vibratory motion, which"h h UC a ' 3 ' 6 ’ order ,0 f iroduce a sound, to harmonize'he dimensions of the tube, and is then regulated and! l'lali se( j t jj e rC g U i ar reflections from the tube, so as totute together a clear musical sound 1 he observes, that
‘Of th*
15 Purpose there must be a great difference of tempe-fail * the a ‘ r and tu h e near the flame ; hence thefe tiic vapour of ether, which produces too slight atoo" 6 ° f l ' eat > and the difficult f of succeedin 6 in a W3rmpla 1 ^ >r want of a sufficient supply of cool air. This ex-^.^ atl0n >s confirmed by a curious experiment on tubes,n »all' )U " )S resem hhng that of a thermometer, in which aP ar ticle of water or mercury is exposed to a conside-the ' *' eat> S0 as to b e wholly converted into vapour, while's * >Srt 'he tube remains cool; in this case a sound
ced somewhat similar to that of hydrogen gas, butMlo k‘ nter . Brugnatelli has obtained a sound from*b*t P ^° rV1S humt in a tube ; and M. Delarive supposesScss^j * phosphorous acid, in the form of a vapour, pos-bith 4 de 8 ree of elasticity, and that it is condensedtlf t(;ts U ® c ' e nt rapidity for the production of the sonorous
Vibrations of Solids.
Chords.
Labile on the trumpet Marigni. A. P. IX.330.
Taylor de motu liervi tensi. Ph.tr. 17 13XXVIIl. 26.
Sauveur on the sounds of chords. A P. 1713.324. H. 68.
Jo. Bernoulli on vibrating chords. C. Petr.III. 13.
D. Bernoulli on the curvature of ati extendedchord. C. Petr. HI. 62.
D. Bernoulli on vibrating chords. A. Bert-1753. 147, 173.
Bernoulli on the vibrations ol’unequal chords,A. Berl. 1765. 281.
Some may be harmonious though unequal; others in-harmonious.
Bernoulli on the vibrations of compoundchords. N. C. Petr. XVI. 257.
Euler on the vibrations of flexible and rigidbodies. C. Petr. VII. 99.
Euler on the oscillations of flexible bodies,C. Petr. XIII. 124. XIV. 182.
On the motion of flexible bodies. A. Berl.1745. H. 54.
Euler on the vibration of chords. A. Berl.1748. 69.
Euler ’s remarks 011 Bernoulli. A. Berl. 1753.196.
Euler on the vibrations of a loaded thread.N.C. Petr. IX. 215.
Euler on the vibrations of unequal chords.N. C. Petr. IX. 246.
Euler on the propagation of agitations. M.Taur. II. ii. 1.
i