RADIOPHONE
Source: 567
Ra″di‐o‐phone (rā″dĭ‐ō̍‐fōn), n. [[Radio- + Gr. φωνή sound.]] (Physics) An apparatus for the production of sound by the action of luminous or thermal rays. It is essentially the same as the photophone.
Source: 567
Ra″di‐o‐phone (rā″dĭ‐ō̍‐fōn), n. [[Radio- + Gr. φωνή sound.]] (Physics) An apparatus for the production of sound by the action of luminous or thermal rays. It is essentially the same as the photophone.