Premium
Photographic Pyrometry
Author(s) -
LONDEREE J. W.
Publication year - 1954
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1954.tb14050.x
Subject(s) - pyrometer , optics , calibration , materials science , brightness , tungsten , protein filament , ribbon , calibration curve , temperature measurement , opacity , physics , chemistry , composite material , chromatography , quantum mechanics , detection limit , metallurgy
Brightness temperatures were determined by measuring the densities of the photographic images produced by hot objects. Temperatures corresponding to these densities were obtained from film calibration curves. Each film was calibrated with exposures of a standard tungsten ribbon‐filament lamp. Within limits the calibration curves (film density vs. reciprocal temperature) were straight lines. The method is shown to be useful where an optical measurement of temperature is desirable but where conditions are changing too rapidly for measurement with the optical pyrometer. Continuous variations of temperature were recorded by moving the film behind a slit through which the image was focused.