FR875777A - Photomètre - Google Patents
PhotomètreInfo
- Publication number
- FR875777A FR875777A FR875777DA FR875777A FR 875777 A FR875777 A FR 875777A FR 875777D A FR875777D A FR 875777DA FR 875777 A FR875777 A FR 875777A
- Authority
- FR
- France
- Prior art keywords
- photometer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
- G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
- G01J1/1626—Arrangements with two photodetectors, the signals of which are compared
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR875777T | 1940-03-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR875777A true FR875777A (fr) | 1942-10-02 |
Family
ID=9360302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR875777D Expired FR875777A (fr) | 1940-03-07 | 1940-03-07 | Photomètre |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR875777A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2524303A (en) * | 1940-03-07 | 1950-10-03 | Bonet-Maury Paul | Photometer |
-
1940
- 1940-03-07 FR FR875777D patent/FR875777A/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2524303A (en) * | 1940-03-07 | 1950-10-03 | Bonet-Maury Paul | Photometer |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FI19952A (fi) | Sotskrapa | |
FR875777A (fr) | Photomètre | |
FR863070A (fr) | Rodoir | |
FR874214A (fr) | Bouterolle | |
CA12895S (fr) | Stauette | |
FR865457A (fr) | Couveuse-étuve | |
FR863303A (fr) | Propulseur-sustentateur | |
FI18825A (fi) | Transportabelt grussorterings- och lastningsverk | |
FI19899A (fi) | Sintringsanordning | |
FI18889A (fi) | Flerdubbelt skiktad papperspåse eller -säck | |
FI18900A (fi) | Elektrisk säkringsanordning | |
FI19827A (fi) | Samlingspärm | |
FI19943A (fi) | Löstand | |
FI19823A (fi) | Gjutform | |
FI18878A (fi) | Suksiside | |
FI18863A (fi) | Värmeöverledningsanordning | |
FI18859A (fi) | Släpräfsa | |
FI18853A (fi) | Barkningsanordning | |
FI18903A (fi) | Gasfyllt elektriskt urladdningsrör | |
FI18834A (fi) | Suksiside | |
FI18907A (fi) | Klosettsits | |
FI18826A (fi) | Pappersvikningsmaskin | |
FI22929A (fi) | Skida | |
FI22877A (fi) | Vävstol | |
FI18910A (fi) | Avbarkningsmaskin |