A thermostatically-controlled micro-polarimeter tube
β Scribed by Kacser, H. ;Ubbelohde, A. R.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1949
- Weight
- 469 KB
- Volume
- 68
- Category
- Article
- ISSN
- 0368-4075
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
A discussion is given of the design of tubes for precision micropolarimetry, which involves the consideration of sources of error negligible in ordinary tubes. A microβtube has been developed which is adapted to the conventional polarizer and analyser. Special provision has been made for easy filling and recovery of solution, accurate temperature control, and rapid temperature changes. The design minimizes errors due to optical and manipulative causes. Comparison with other polarimeters described in the literature shows that the precision is equal to that of good macroβtubes and better than most microβtubes. The range of conditions over which Useful data can be obtained is substantially wider than with previously described microβtubes.
π SIMILAR VOLUMES
## Abstract A sensitive electronic thermostat control unit is described in which a thermistor is used as the sensing element. The output from the thermistor bridge network, after amplification, provides grid potential amplitude control of the current in a gasβfilled triode, the anode circuit of whi