Abstract

For high accuracy in commercial refractometry, refractometers should be used more strictly as comparison instruments and series of standard samples with known refractivities over a range of room temperatures should be available for frequent check measurements. Tests for various mechanical and optical defects are necessary and compensators should be examined for their possible deviation of sodium light. Care in the selection of suitable contact liquids for solid media is advisable for several reasons. Owing to inherent difficulties in the design of illuminating prisms there are possibilities of getting different readings on solids and liquids of identical refractivity. Since dispersion measurements as usually made with the compensator are necessarily less reliable than is generally realized, it is recommended that line spectra sources be employed whenever accurate dispersions are desired and that the scale be calibrated for each wave-length that is to be used.

© 1942 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Limitations of a Blanket Calibration Chart for Reading Dispersions on the Abbe Refractometer

Laurence Ellsworth Dodd
J. Opt. Soc. Am. 22(9) 477-487 (1932)

Optical model enabling the use of Abbe-type refractometers on turbid suspensions

Augusto García-Valenzuela and Humberto Contreras-Tello
Opt. Lett. 38(5) 775-777 (2013)

Pulfrich refractometer for 1-D gradients

Miguel Cervantes and Ramon Rodriguez-Vera
Appl. Opt. 27(21) 4494-4496 (1988)

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 (3)

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 (4)

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