Log ind for at se denne genstand på andre sprog.
Double diaphragm
The rectangular plate, with two holes, carries two rotating diaphragms: one is circular, and has 8 round, 2 oval, 3 triangular, and 2 rectangular apertures; the other is semicircular, with 4 pairs of holes and 3 round apertures of different diameters.
Skaberen
- Europeana
Udgiver
- Museo Galileo - Istituto e Museo di Storia della Scienza
Emne
- Optik
- optics
Type af genstand
- Diaphragm
- scientific instruments
Medium
- brass
- Messing
- brass (alloy)
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
- second half 18th cent.
- 1800
- 1751
Identifikator
- urn:imss:instrument:406032
Omfang
- 140x204 mm
Sprog
- eng
- ita
Er en del af
- Lorraine collection
Referencer
- http://catalogue.museogalileo.it/indepth/Diaphragm.html
År
- 1751
- 1800
Leverende land
- Italy