Drawings of photophone components

Two drawings indicating the apparatus used in the photophone. The top drawing depicts a man sitting in a chair blowing into an object so the sound goes to the other end of the table.  The bottom drawing depicts two men; one with ear phones and the other speaking into a big round object. Alexander Graham Bell's photophone modulated reflected sunlight with sound vibrations, then detected the sound by using the light to illuminate a piece of selenium.  It carried voices without wires, but not very far., Credit Line: Bell Laboratories / Alcatel-Lucent USA Inc. / Collins Radio Company, courtesy AIP Emilio Segrè Visual Archives, Hecht Collection
Abstract/Description: Two drawings indicating the apparatus used in the photophone. The top drawing depicts a man sitting in a chair blowing into an object so the sound goes to the other end of the table. The bottom drawing depicts two men; one with ear phones and the other speaking into a big round object. Alexander Graham Bell's photophone modulated reflected sunlight with sound vibrations, then detected the sound by using the light to illuminate a piece of selenium. It carried voices without wires, but not very far.
Subject(s): Equipment and supplies
Acoustical engineering
Sound equipment & supplies
Photophone
Date Created: circa December 1880
Credit Line: Bell Laboratories / Alcatel-Lucent USA Inc. / Collins Radio Company, courtesy AIP Emilio Segrè Visual Archives, Hecht Collection
Catalog ID: Photophone H1