WE have recently been able to prove that the following laws first discovered in the X-ray field, namely (1) the Moseley law, (2) the regular-doublet, or Sommerfeld, law, and (3) the irregular ...

A depiction of the crystal structure of chromium triiodide (CrI3), with chromium atoms shown in purple and iodine atoms in yellow. The black arrows represent the electron "spins," which are ...