IN 1872 Mr. Schuster published the important statement that “nitrogen, heated in a Geissler tube with metallic sodium, ceased to give the characteristic channelled spectrum.” He described the bright ...

IN a communication in these columns 1 I directed attention to the presence of two members of the Vegard-Kaplan system of nitrogen in the spectrum of the afterglow that was discovered by me in 1934 2.

A research team has developed a new hybrid artificial intelligence framework that can accurately estimate leaf nitrogen ...

Establishing the chemical state and nitrogen concentration is crucial in defining the electronic structure of a material. X-ray photoelectron spectroscopy (XPS) is a technique that is frequently used ...