Log ind for at se denne genstand på andre sprog.
Reis telephone transmitter
At the top of a mahogany box is stretched a diaphragm of bladder that is set in vibration by sounds from a brass mouthpiece stained black. The vibrations cause an intermittent contact between a small platinum disk at the center of the diaphragm, and a light brass lever in contact with an electromagnet. [...]
Skaberen
- Johann Phillipp Reis
Udgiver
- Museo Galileo - Istituto e Museo di Storia della Scienza
Emne
- electrical engineering
Type af genstand
- Transmitter / receiver
- telegraphs
Ejerinstiution
Rettigheder for medierne i denne optagelse (medmindre andet er angivet)
- http://rightsstatements.org/vocab/InC/1.0/
- http://rightsstatements.org/vocab/InC/1.0/
Rettigheder
- © Museo Galileo - Istituto e Museo di Storia della Scienza
Oprettelsesdato
- ca. 1870
- 1870~
- 1870~
- 1870
- 1870
Identifikator
- urn:imss:instrument:414138
Omfang
- total height 106 mm, base 116x116 mm
Sprog
- eng
- ita
Referencer
- http://catalogue.museogalileo.it/biography/JohannPhillippReis.html
År
- 1870
Leverende land
- Italy