Abstract

The spectra of acetylene, ethylene, n-butane, n-hexane, n-octane, benzene, toluene, cumene, ethyl alcohol, ethyl ether, and sulphur dioxide were investigated with a grating of 1134 lines per cm in the region between 3 and 4 μ. The absorption curves are represented in figures. A table gives the wave-numbers of the maxima and selected wave-number differences. The individual lines of the bands are not revealed, but the envelopes are obtained. From the latter an attempt is made to state what branches are present in the bands. Attention is called to relations existing among the wave-number differences.

© 1927 Optical Society of America

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Figures (3)

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Tables (1)

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