Accession Number : AD0472682


Title :   ABSORPTION OF LIGHT IN GASES


Descriptive Note : Quarterly letter rept. no. 4, 1 Jul-30 Sep 1965


Corporate Author : PERKIN-ELMER CORP NORWALK CT ELECTRO-OPTICAL DIV


Personal Author(s) : Atwood, J G


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/472682.pdf


Report Date : 30 Sep 1965


Pagination or Media Count : 16


Abstract : All of the necessary equipment has been constructed to complete the absorption measurements with a ruby beam in air samples from 6942 - 6943 A. Preliminary experiments with a piezo-electric ceramic microphone indicate that the sensitivity and bandwidth of this type of microphone is inadequate to detect the H2O band at 6942.15 A. It confirms the fact that there is no anomalously large absorption, and that the sensitivity of the collodion membrane microphone will be required. All of the subsystems of the experiment were successfully operated separately and all but the new force-balance collodion microphone were operated together. Work during the past quarter on these subsystems is described. (Author)


Descriptors :   *VISIBLE SPECTRA , ACOUSTIC EQUIPMENT , AIR , LIGHT , MEMBRANES , MICROPHONES , OPTICS , PIEZOELECTRIC CRYSTALS , RUBY


Subject Categories : Atomic and Molecular Physics and Spectroscopy


Distribution Statement : APPROVED FOR PUBLIC RELEASE