- 1535 A parhelion - the appearance of a luminous ring around the Sun - is observed over Stockholm
- 1902 Pierre and Marie Curie refine radium chloride
- 1918 Birth of Kai Siegbahn, winner of the 1981 Nobel Prize along with Nicolaas Bloembergen and Arthur Schawlow for their work in laser spectroscopy
- 1927 Birth of Karl Alexander Müller, who was awarded the 1987 Nobel Prize jointly with Johannes Georg Bednorz for their studies of superconductivity in ceramics
Impact Factor success
The 2012 Impact Factors once again show significant growth for many of the journals published by IOP Publishing.
New physicsworld.com service helps to connect research with industry
Physics Connect, an online innovation service that aims to bridge the gap between academia and industry, has been launched on physicsworld.com.