JJ Thomson and the discovery of the electron Gordon Squires recounts the events that led to the discovery of the electron by JJ Thomson and describes the life of this great scientist. The Standard Model of particle physics predicts that the electric dipole moment of the electron should be immeasurably small. Ed Hinds and Ben Sauer describe efforts to measure this dipole moment. Electron-beam lithography Beams of electrons can be used to write nanoscale features on silicon wafers. Lloyd Harriott and Alexander Liddle discuss the latest attempts to transfer this technology from specialized applications to bulk manufacture.
Electrons lose energy as they travel through a material.
Ray Egerton explains how this energy loss can tell us about the physical and chemical properties of the material. Physics Education July is the publication date for a special commemorative issue of Physics Education , the journal for physics teachers in schools and colleges. The Dirac equation. This was undertaken by Board member Maureen Maybank and proves the versatility and determination of our Board members when in pursuit of material for publication. In addition, the issue contains all the regular features of news, letters and reviews.