Masters Theses


"The suitability of using the White cell for determining the extinction coefficient of liquids was examined by measuring the attenuation of electromagnetic radiation, in the visible part of the spectrum, through distilled water. The analysis of the transmittance measurements through liquids in a White cell does not provide a sufficient number of independent equations to solve directly for the extinction coefficient. Reasonable estimates however can be made by employing a correction which accounts for changes in the mirror reflectance due to a liquid-mirror interface.

The reduction in the transmittance of distilled water due to an oil film was studied for fuel oils number 2 and 3 and midwestern crude oil. Reduction depends on the thickness and the extinction coefficient of the oil. It was found that a small film of crude oil, approximately six thousandths of an inch thick, can reduce the transmittance to almost zero in the range where the water's transmittance is a maximum (0.45µ - 0.50µ).

Errors resulting from using transmittance measurements to determine the extinction coefficient of liquids were examined. The analysis reveals that transmittance measurements through two cells which differ in their optical path by 1.3 will yield the highest level of accuracy"--Abstract, page ii.


Armaly, B. F. (Bassem F.)

Committee Member(s)

Look, Dwight C., 1938-
Edwards, D. R.


Mechanical and Aerospace Engineering

Degree Name

M.S. in Mechanical Engineering


National Science Foundation (U.S.)


Funded by the National Science Foundation, grant GK32679


University of Missouri--Rolla

Publication Date



viii, 51 pages

Note about bibliography

Includes bibliographical references (pages 49-50).


© 1973 David Earl Hurley, All rights reserved.

Document Type

Thesis - Restricted Access

File Type




Library of Congress Subject Headings

Radiation -- Measurement
Physical optics

Thesis Number

T 2911

Print OCLC #


Electronic OCLC #


Link to Catalog Record

Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.

Share My Thesis If you are the author of this work and would like to grant permission to make it openly accessible to all, please click the button above.