A NEW PHOTO-CELL PHOTOMETER
- 1 October 1932
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 3 (10) , 556-560
- https://doi.org/10.1063/1.1748870
Abstract
The sensitive surfaces of two Weston Photronic cells have been combined into a single photometer cell such that a simple null method of photometry is available. The sensitivity of the device has been studied when a sensitive galvanometer was used as indicator and found to be about five times that of visual methods. Immediate application to the comparison of two similar sources is possible; and by incorporating windows of the filter material recently described by O'Brien, comparison of the luminosity of any two sources is possible without recourse to a flicker photometer.This publication has 0 references indexed in Scilit: