PROF. NICHOLSON has recently (Phil. Mag., vol. 50, p. 650, 1925) pointed out the importance of investigating the effect of a magnetic field on the so-called “doublet bands” of helium. He gives reasons ...

THE discovery, announced by J. Stark in NATURE of December 4, 1913, that when hydrogen in a state of luminescence is placed in an electric field of suitable strength and direction, the spectral lines ...

More often than you think, scientific progress starts with a simple statement: “Huh, that’s funny…” That’s the sign that someone has noticed something peculiar, and that’s the raw fuel of science ...