A new method of determining the properties of dielectrics at centimetre wave-lengths

Abstract
A new method of determining the electrical properties of dielectrics at centimetre wave-lengths is described. Although this is a free-wave method it requires only relatively small amounts of the substance and is particularly applicable to measurements on solid materials. The method has been employed at a wave-length of 12.0 cm. to measure the refractive indices and the absorption coefficients of some common laboratory substances. The results obtained are given and briefly discussed.