alb5411764

How to Use a Bell Telephone,1876

How to Use a Bell Telephone, 1876
Share
pinterestPinterest
twitterTwitter
facebookFacebook
emailEmail

Add to another lightbox

Add to another lightbox

add to lightbox print share
Do you already have an account? Sign in
You do not have an account? Register
Buy this image. Select the use:
Loading...
Title: How to Use a Bell Telephone,1876
Caption: A 19th century illustration of the proper use of a Bell telephone, where the microphone and speaker are separate devices. A telephone converts sound, typically and most efficiently the human voice, into electronic signals suitable for transmission via cables or other transmission media over long distances, and replays such signals simultaneously in audible form to its user. In 1876, Scottish-American Alexander Graham Bell was the first to be granted a United States patent for a device that produced clearly intelligible replication of the human voice. This instrument was further developed by many others.
Credit: Album / Science Source
Releases: ? Model Release: No - ? Property Release: No
Rights questions?
Image size: 1949 × 1356 px | 7.6 MB
Print size: 16.5 × 11.5 cm | 767.3 × 533.9 in (300 dpi)