Photophone

[fәutәufәun]

(n.) An apparatus for the production of sound by the action of rays of light.

科林整理

n. an apparatus for transmitting articulate speech to a distance along a beam of light.

埃维塔校對

Bell and Tainter with their _photophone_ have converted the undulatory waves of light into the sweetest music. 威廉·亨利·杜利特. 世紀發明.

埃维塔校對