DE198290C - - Google Patents
Info
- Publication number
- DE198290C DE198290C DE1906198290D DE198290DD DE198290C DE 198290 C DE198290 C DE 198290C DE 1906198290 D DE1906198290 D DE 1906198290D DE 198290D D DE198290D D DE 198290DD DE 198290 C DE198290 C DE 198290C
- Authority
- DE
- Germany
- Prior art keywords
- selenium
- light source
- light
- cells
- zero
- 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
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims description 20
- 229910052711 selenium Inorganic materials 0.000 claims description 20
- 239000011669 selenium Substances 0.000 claims description 20
- 230000000694 effects Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000009699 differential effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 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
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
- G01J1/20—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
- G01J1/34—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using separate light paths used alternately or sequentially, e.g. flicker
- G01J1/36—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using separate light paths used alternately or sequentially, e.g. flicker using electric radiation detectors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE198290T | 1906-07-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE198290C true DE198290C (enrdf_load_stackoverflow) | 1908-05-14 |
Family
ID=34624853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1906198290D Expired DE198290C (enrdf_load_stackoverflow) | 1906-07-03 | 1906-07-03 |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE198290C (enrdf_load_stackoverflow) |
-
1906
- 1906-07-03 DE DE1906198290D patent/DE198290C/de not_active Expired
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