Abstract

It has been shown that crystals whose particle-size is small in comparison with the wave-length absorb but do not reflect within the region of selective absorption. It is suggested that within this region a powder ought to reveal an emission maximum. This suggestion is put to experimental test which shows that powder-films of quartz, barium sulphate and potassium carbonate show pronounced emission maxima. The behavior of quartz-powder is shown to be quite the inverse of that of a polished quartz plate.

© 1933 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
The Optical Properties of Metallic and Crystalline Powders

A. H. Pfund
J. Opt. Soc. Am. 23(10) 375-378 (1933)

The Transmission of Powder Films in the Infra-Red

R. L. Henry
J. Opt. Soc. Am. 38(9) 775-789 (1948)

Filters for the Infrared Region

Earle K. Plyler and Joseph J. Ball
J. Opt. Soc. Am. 42(4) 266-268 (1952)

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

Figures (5)

You do not have subscription access to this journal. Figure files 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 (1)

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