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polarimeter
Sign in to saveupright=1.5|thumb|Operating principle of an optical polarimeter. 1. Light source 2. Unpolarized light 3. Linear polarizer 4. [[Linearly polarized light 5. Sample tube containing chiral molecules under study 6. Optical rotation due to molecules 7. Rotatable linear analyzer 8. Detector]]
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- Polarimeters
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~18 min read
Article
17 sectionsContents
- History
- Measuring principle
- Construction
- Operation
- Types of polarimeter
- Laurent's half-shade polarimeter
- Biquartz polarimeter
- Manual
- Semi-automatic
- Fully automatic
- Sources of error
- Calibration
- Applications
- Chemical industry
- Food, beverage and pharmaceutical industries
- See also
- References
upright=1.5|thumb|Operating principle of an optical polarimeter. 1. Light source 2. Unpolarized light 3. Linear polarizer 4. [[Linearly polarized light 5. Sample tube containing chiral molecules under study 6. Optical rotation due to molecules 7. Rotatable linear analyzer 8. Detector]]
A polarimeter is a scientific instrument used to measure optical rotation: the angle of rotation caused by passing linearly polarized light through an optically active substance.