## Abstract

The construction, physical function, and use of a wedge-shaped cell for measuring the Lambert adsorption coefficient of highly absorbent liquids is described. Liquids are held in the cell by surface tension, thus avoiding the use of seals. The cell is simple in its design and is about as convenient to use as an ordinary cuvette.

© 1978 Optical Society of America

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### Equations (5)

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(1)
$$T\phantom{\rule{0.1em}{0ex}}(\nu ,z)=t\phantom{\rule{0.1em}{0ex}}{{(\nu )}_{\alpha}}^{2}{{t\phantom{\rule{0.2em}{0ex}}(\nu )}_{l}}^{2}exp[-2d\alpha \phantom{\rule{0.2em}{0ex}}{(\nu )}_{w}-z\alpha \phantom{\rule{0.2em}{0ex}}{(\nu )}_{l}]\phantom{\rule{0.3em}{0ex}},$$
(2)
$$\alpha \phantom{\rule{0.2em}{0ex}}{(\nu )}_{l}=ln[T\phantom{\rule{0.2em}{0ex}}(\nu ,{z}_{1})/T\phantom{\rule{0.2em}{0ex}}(\nu ,{z}_{2})]/({z}_{2}-{z}_{1})\phantom{\rule{0.3em}{0ex}}.$$
(3)
$$\mathrm{\Delta}\phantom{\rule{0.1em}{0ex}}\u220a=[D{\gamma}_{l\upsilon}/+2\phantom{\rule{0.2em}{0ex}}({\gamma}_{w\upsilon}-{\gamma}_{wl})]\phantom{\rule{0.2em}{0ex}}x\phantom{\rule{0.3em}{0ex}},$$
(4)
$$W=D{S}^{2}\rho g/2L\phantom{\rule{0.2em}{0ex}},$$
(5)
$${D}_{\text{MAX}}\equiv 4{\gamma}_{l\upsilon}/L\rho g\phantom{\rule{0.2em}{0ex}}.$$