Javascript must be enabled to view this site.

Read our system requirements.

Reis telephone transmitter, 1863
1 of 1

Reis telephone transmitter, 1863, result 1 of 1

Item Details
Open Artstor
Available to everyone
Title
Reis telephone transmitter, 1863
Transmitter, part of Reis telephone made in 1863
Work Type
Telecommunications
Date
1863
Location
Frankfurt am Main
Material
brass (copper, zinc alloy); copper (metal); steel (metal); wood (unidentified)
Measurements
overall: 100 mm x 135 mm x 190 mm, .5 kg
Description
Reis telephone transmitter, made by J W Arnold, Frankfurt, Germany, 1863; Reis telephone transmitter, made by J W Arnold, Frankfurt 1863; Reis telephone transmitter, made by J W Arnold, Frankfurt, 1863; Reis telephone transmitter, made by J W Arnold, Frankfurt, Germany, 1863.; This object represents the final form of the several designs of 'telephon' apparatus designed by Philipp Reis (1834-1874) between 1860 and 1863, and made for him by the precision engineers J W Albert. The transmitter used a membrane with a loose microphonic contact arranged between platinum points in the centre - the sound waves caused the membrane to vibrate, and this movement varied the electrical current that passed through the metal contacts. These were of the 'make and break' type and could not transmit true 'undulatory' current except when out of adjustment. Reports from the time prove that Reis succeeded in transmitting fragments of speech and musical tones, but the apparatus he designed was too inefficient for practical use without further development, which Reis didn't undertake.
Repository
Science Museum, Information Age Gallery: Exchange
ID Number
co8005634
Source
Image and original data from Science Museum Group - https://collection.sciencemuseum.org.uk
Rights
The source metadata displayed in the Description field is released under a Creative Commons Attribution 4.0 license - https://creativecommons.org/licenses/by/4.0/. All other source metadata is released under Creative Commons Zero - https://creativecommons.org/publicdomain/zero/1.0/. The image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License - https://creativecommons.org/licenses/by-nc-sa/4.0/.
File Properties
File Name
large_1923_0273_0001__0003_.jpg
SSID
26234805

Now viewing Reis telephone transmitter, 1863