THE PRODUCTION OF SOUND BY RADIANT ENERGY.
THE PRODUCTION OF SOUND BY RADIANT ENERGY.
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DOI:
10.1126/science.os-2.49.242
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发表时间:
1881-05-28
期刊:
影响因子:
--
通讯作者:
Bell, A G
中科院分区:
文献类型:
--
作者:
Bell, A G
miany) years religiotisly regarded as the true uiltimiate ousness uinder such circumstances would be foundI to) be resolution o tht (itm wudpoetob nilD a genlerail property of all matter. resoutioi oftha diaoiii woild roveto e ai ill- At that t'ime we hadl failed to ob) tain auilible ef-fects from sion? Wh'Iile to make the case miore complicated, Pro-masse: s of thie v-arious substances wshich be: came sonocruus fessor E. Abbe states that" 1whiile it is not miy op) inion in'the condlition of thiin (Iiaphragms, but this faiilure was txp) lained upon the suppositin that the miolecular thatthe Jn. eula, unvalv is ompsed f sherues, disturbanice p) rcdIucedl by the lig, ht was chiieflya surface yet even if sttchi shiould exist, they'wvoildI not have a azction, antI that tunder the circumstances of the experi-differenteffect."~~~~~~~ nints, the vibration hadl to be, tranismiitted throughi the mass of the substance in or (ler to affect the ear. It was Thius" The Afs i/e'rpr/i/n of/ic JJie1ros0Yop'therefore supposed that, if we couldI lead to the car air ttn (ercrtan coditins, is no myth, btit an admiitted that was dlirectly in contact w~ ith thet illuminated surface, facti; ler weltiicomedithenste Imrviflft hc hl loudler souni (ls might be obtained, and solid mrasses b-at least partially remedy the evil. Th'le highangle t ea ooosa hnda rgn.'h is experiments niiarle to verify this hypothecsis l) ointe (l to-objectives of the p) resen3t, althiouigh far fromi l) erfect, wards success. A beami of sunlig-hk was focussezd into give great hiope for the ftitttre, and ('ye trace in one end (of an optn'tube, the ear being placedI at the9 towlichefeeiie las een othier endl. Upon interrupting the beam, a clear, musicalPlrofessor Smiith's wvork, t hc eernehsbe tone w~ as heard, the pitch of wh, xiich depended upon thle md, the advent of a highier intelligence among" freqjuency of the interruption of the lig, ht and 10IodthSS, Microscopical workers.'1'hiis new spirit of p) rogress U) fh aeilcmoigtetle At this stage our experimients were interrup) te (l. as cir-is wvell (describ) e (l by D) r. Beale whieni hie says. thectimstances called mie to Europe. Microscopist, like thle Astronomer, is ever l'onging\While in Paris a new formi of the experiment ocetiriied