| Description |
viii, 62 leaves : illustrations ; 29 cm |
| Summary |
"Methods for determining the optical constants, the real and the imaginary part of the complex index of refraction, for weakly and strongly absorbing liquids are reviewed and evaluated. Both reflection and transmission methods were considered and preliminary steps are taken for determining the optical constants for both water and oil in the visible region (0.45 - 0.65 microns) of the spectrum. A low resolution spectrometer was used and the transmission measurements through fuel oil, number 1 through 6, and crude oil were performed. The imaginary part of the complex index of refraction was deduced from the above measurements and appears to decrease with both a decrease in the fuel oil number or an increase in wavelength. Absorption bands were not observed in the measured region. The design and construction of a long path multiple reflection transmission cell, to be used with weakly absorbing liquids, and a reflection system, to be used for determining the real part of the complex index of refraction, has been completed. Preliminary tests indicate that the two systems are performing satisfactorily and with minor modifications actual measurements could be initiated"--Abstract, leaf ii. |
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