Issues

Neutrino beams running hundreds of kilometers through the Earth, from accelerator to detector, would provide sensitive tests of neutrino flavor oscillation.

Last November, CERN's LEP collider looked at the highest‐energy e⁺e⁻ collisions yet achieved and saw no serious challenges to the standard model.

Chance favored Becquerel with cloudy days that hid his phosphorescent uranium salts from the sun. Further experiments led him to conclude that the salts emitted invisible, penetrating rays independent of their luminescence.

Descriptions of the physical universe and proofs of abstract mathematical theorems are sometimes intimately related.

Fractal generalizations of Brownian motion have proven to be a rich field in probability theory, statistical physics and chaotic dynamics.

Advances in synchrotron sources of hard x rays promise to open a new frontier in the use of inelastic scattering to probe eV and sub‐eV electronic excitations in simple and complex solids and liquids.