|
Date: |
|
Description: | print. etching. Alexander Graham Bell 1847-1922 / A Delzers ; from copyright photograph by Harris & Ewing Washington DC. - n.d. [1955-1964] [Men in telecommunications] International Telecommunication Union 23x19cm. -Portrait. HL to L. Alexander Graham Bell 1847-1922, devised apparatus for transmitting sound by electricity, the telephone, invented photophone- transmission of sound on a beam of light- a precursor of today's optical fiber systems, medical researcher, invented techniques for teaching speech to the deaf. | License: | http://creativecommons.org/licenses/by-nc-sa/2.5/ | Subjects: | etching print portrait | Temporal: | 1955-1964 | Source: | Science Museum | Creator: | International Telecommunication Union | Identifier: | 1982-1382/4 | Go to resource |
|
More Like this...
-
-
-
-
-
-
Faraday
print. etching. [Michael] Faraday 1791-1867.…
-
-
-
-
|