GB868359A - Improvements in and relating to polarimetry and polarimeters - Google Patents
Improvements in and relating to polarimetry and polarimetersInfo
- Publication number
- GB868359A GB868359A GB1360258A GB1360258A GB868359A GB 868359 A GB868359 A GB 868359A GB 1360258 A GB1360258 A GB 1360258A GB 1360258 A GB1360258 A GB 1360258A GB 868359 A GB868359 A GB 868359A
- Authority
- GB
- United Kingdom
- Prior art keywords
- photo
- cell
- electrometer
- resistors
- polarimeter
- 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
- 238000000711 polarimetry Methods 0.000 title 1
- 230000008033 biological extinction Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 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
- G01J4/00—Measuring polarisation of light
- G01J4/04—Polarimeters using electric detection means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
868,359. Polarimeters. BOR, J. July 27, 1959 [April 29, 1958], No. 13602/58. Class 40(3) In a polarimeter the extinction angle is determined as the mean of two angular settings at which the brightness is equal to a standard. A beam splitter 3, Fig. 1, directs about one-fifth of a beam 4 via path 6 to a photo-cell 9, the remainder passing through the polarimeter 1, 2, to a photo-cell 8. When the light intensity falling on the two cells is the same an electrometer 10 in a bridge circuit, Fig. 3, indicates zero. Coarse setting of the zero of the electrometer is effected by resistor 22 and fine adjustment by resistors 23, 24. Sensitivity is controlled by the circuit comprising battery 25 and resistors 26, 27 and the photo-cell dark current is compensated by the circuit comprising battery 15 and resistors 16, 17, 18, 19 and 20. The electrometer needle may be earthed through resistor 28. In one modification the two beams may be alternately directed on to one photo-cell and the output adjusted to be steady and in another, Fig. 4 (not shown) photo-conductive and photovoltaic cells are used. The beam splitter and photo-cells may be arranged in units for attachment to a standard polarimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1360258A GB868359A (en) | 1958-04-29 | 1958-04-29 | Improvements in and relating to polarimetry and polarimeters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1360258A GB868359A (en) | 1958-04-29 | 1958-04-29 | Improvements in and relating to polarimetry and polarimeters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB868359A true GB868359A (en) | 1961-05-17 |
Family
ID=10026019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1360258A Expired GB868359A (en) | 1958-04-29 | 1958-04-29 | Improvements in and relating to polarimetry and polarimeters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB868359A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2393296A1 (en) * | 1977-05-31 | 1978-12-29 | Mueller Arno | METHOD AND APPARATUS FOR QUANTITATIVE DETERMINATION OF OPTICALLY ACTIVE SUBSTANCES |
-
1958
- 1958-04-29 GB GB1360258A patent/GB868359A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2393296A1 (en) * | 1977-05-31 | 1978-12-29 | Mueller Arno | METHOD AND APPARATUS FOR QUANTITATIVE DETERMINATION OF OPTICALLY ACTIVE SUBSTANCES |
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