optoacoustic, a.
(ˌɒptəʊəˈkuːstɪk)
Also opto-acoustic.
[f. opto- + acoustic a.]
Involving or being the effect whereby a light beam periodically interrupted at an audio frequency produces an audible sound when made to irradiate an enclosed body of gas.
| [1959 Science Progress XLVII. 459 (heading) The optic-acoustic effect in gases.] 1971 Jrnl. Appl. Physics XLII. 2934/1 This technique uses the optoacoustic effect which was discovered by Bell, Tyndall, and Röntgen. 1976 Nature 19 Aug. 681/2 Opto-acoustic detection was discovered by Bell nearly a century ago, but was recently revived as a means of monitoring low concentrations of pollutant molecules. |