Most people think of Sir Isaac Newton as the father of gravity. But for some physicists Newton's "dusty mirror" experiment has served as a launching pad for them to keenly watch the X-ray induced ...

IN NATURE of October 24 (vol. Ixxvi., p. 637) Mr. Edser asks whether anyone has tried the experiment of Lloyd's single mirror fringes with polarised light to see whether a change of the character of ...