Outlines the discovery and nature of ultraviolet light, discusses some applications for these wavelengths, and describes a number of experiments with ultraviolet radiation suitable for secondary school science classes. (JR)

Discusses experience of teaching a "Search in Science" course to college nonscience majors entitled "From Myth to Mechanism: A Study of Man's Changing Concepts of the Universe from Early Mythological Beliefs to the Development of Modern Scientific Laws." Historical explanation of the development of physical concepts is stressed. (CC)

Reviews theoretical principles underlying the quark model. Indicates that the agreement with experimental results and the understanding of the quark-quark force are two hurdles for the model to survive in the future. (CC)

Discusses a simplified Millikan oil-drop experiment which emphasizes the enplanation of basic concepts in mechanics and electrostatics, the use of home-made apparatus, the request for an individual's observation of his own drop, and the application of statistical analysis in data interpretation. (CC)

Discusses the definition of the term weight'' in connection with fictitious forces occurring in accelerated frames of reference. (CC)

Describes a method of recording the number of particles scattered at various angles for different impact parameters in an experiment illustrating the Rutherford scattering of alpha particles. (JR)

New research topics have been brought about by the acceleration of nitrogen nuclei to the energy of 36 billion electron volts. Describes experiments on tumor cells, cosmic rays, and nuclear fission performed with the Bevatron at the Lawrence Berkeley Laboratory. (TS)