Abstract

A theory is worked out for a simulated isothermal enclosure created by irradiating an object with a beam of radiant flux from a reference blackbody and comparing the blackbody radiant flux with that reflected, transmitted, and emitted by the object. By modifying Kirchhoff’s law to conform to the new geometry, conditions of isothermal balance or imbalance between blackbody and object can be determined, thus enabling temperature measurement or control to be effected. Also, measurements of emissivity, reflectance, and transmittance can be made.

© 1964 Optical Society of America

Emissivity of Carbon Dioxide at 4.3 μ

William O. Davies
J. Opt. Soc. Am. 54(4) 467-471 (1964)

Thermal Radiation from Partially Transparent Reflecting Bodies

H. O. McMahon
J. Opt. Soc. Am. 40(6) 376-380 (1950)

Emissivities of diffuse cavities: Isothermal and nonisothermal cones and cylinders

R. E. Bedford and C. K. Ma
J. Opt. Soc. Am. 64(3) 339-349 (1974)

Measurement of Eye Movements by Contact Lens Techniques: Analysis of Measuring Systems and Some New Methodology For Three-Dimensional Recording*

Leonard Matin
J. Opt. Soc. Am. 54(8) 1008-1018 (1964)

Emissivities of diffuse cavities, II: Isothermal and nonisothermal cylindro-cones

R. E. Bedford and C. K. Ma
J. Opt. Soc. Am. 65(5) 565-572 (1975)