FR742042A - - Google Patents
Info
- Publication number
- FR742042A FR742042A FR742042DA FR742042A FR 742042 A FR742042 A FR 742042A FR 742042D A FR742042D A FR 742042DA FR 742042 A FR742042 A FR 742042A
- Authority
- FR
- France
- 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
- G01J1/38—Photometry, e.g. photographic exposure meter using wholly visual means
- G01J1/40—Photometry, e.g. photographic exposure meter using wholly visual means using limit or visibility or extinction effect
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR742042A true FR742042A (xx) | 1933-02-24 |
Family
ID=1546500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR742042D Expired FR742042A (xx) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR742042A (xx) |
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0
- FR FR742042D patent/FR742042A/fr not_active Expired