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

Full Article  |  PDF Article
OSA Recommended Articles
Thermal Radiation from Partially Transparent Reflecting Bodies

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

Emissivity of Carbon Dioxide at 4.3 μ

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

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)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (33)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription