THE more or less complete lack of vibrational structure in ultra-violet absorption spectra of polyatomic molecules has made it impossible to locate the frequency corresponding to the pure electronic ...

I HAVE investigated the absorption of iodine vapour in a tube of 26 cm. length at temperatures above 800° C. over the region 2900–5000 A. and have observed the appearance of a continuous absorption ...

Absorption spectroscopy is an analytical chemistry tool that can determine if a particular substance is present in a sample by measuring the intensity of the light absorbed as a function of wavelength ...

Infrared spectroscopy (IRS) is a technique used to analyze individual substances in isolation or a mixture, using their spectral information. IRS is based on the measurement of the wavelength and ...