This short biography of Fresnel traces his early education, his work as an engineer and his theories and discoveries in optics. The importance of Fresnel's ideas on diffraction, interference and double refraction are discussed. Bibliography. (LC)

Based upon recent relativistic theory, the researcher describes the search for tachyons, particles having velocities greater than that of a light. The properties of these particles are speculated upon. The author delineates the difficulties anticipated in their detection and the assumptions underlying their methodology. (RR)

Discusses expanding user community seeking access to synchrotron radiation sources, properties/sources of synchrotron radiation, permanent-magnet technology and its impact on synchrotron radiation research, factors limiting power, the density of synchrotron radiation, and research results illustrating benefit of higher flux and brightness. Also…

The Gordon Research Conferences were established to stimulate research in universities, research foundations, and industrial laboratories. The topics for the conferences are listed as well as the locations and scheduled presentations at each conference. (CS)

The "Hands on CERN" education project makes it possible for students and teachers to get close to the forefront of scientific research. The project confronts the students with contemporary physics at its most fundamental level with the help of particle collisions from the DELPHI particle physics experiment at CERN. It now exists in 14 languages…

Describes the procedure, equipment, results, and weaknesses of an experiment conducted by Nevil Maskelyne at Schehallien peak in Scotland; the purpose of the experiment was to collect data for the calculation of the mean density of the earth and to measure the universal gravitational constant. (MLH)

An experiment was performed that allowed measurements of both axial mass and heat transport of He-II (the superfluid phase of helium 4) in a long tube. The apparatus allowed the pressure difference and the temperature difference across the flow tube to each be independently adjusted, and the resulting steady-state values of net fluid velocity and…

Divides the components of the energy crisis into those which demand immediate, moderate term, and long term research efforts. Delineates specific topics in each category and solicits physicists' efforts in these areas. (CP)