The light emitted by a hot object is called "blackbody radiation," and has some interestingly simple properties. The color of the light does not depend strongly on the properties of the material ...

IN the course of investigations that have been made at the Electrical Laboratory, Oxford, of the electrical properties of argon, it was found that when the gas is obtained in a high degree of ...

ABSTRACT An atlas of a thorium‐argon hollow cathode lamp in selected intervals of the 1–2.5 μm region is presented. Accurate wavelengths of the ∼500 lines recorded are given in a table. This material ...