BE398932A - - Google Patents
Info
- Publication number
- BE398932A BE398932A BE398932DA BE398932A BE 398932 A BE398932 A BE 398932A BE 398932D A BE398932D A BE 398932DA BE 398932 A BE398932 A BE 398932A
- Authority
- BE
- Belgium
- Prior art keywords
- diaphragm
- photoelectric cell
- dynamic system
- photometer
- light
- Prior art date
Links
- 230000035945 sensitivity Effects 0.000 claims description 4
- 239000000839 emulsion Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 239000005751 Copper oxide Substances 0.000 description 2
- 229910000431 copper oxide Inorganic materials 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE398932A true BE398932A (bs) |
Family
ID=65334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE398932D BE398932A (bs) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE398932A (bs) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE748204C (de) * | 1934-07-08 | 1944-10-28 | Elektrischer Belichtungsmesser |
-
0
- BE BE398932D patent/BE398932A/fr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE748204C (de) * | 1934-07-08 | 1944-10-28 | Elektrischer Belichtungsmesser |
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