Description: "Dr. Donald J. Hughes, senior physicist at Brookhaven National Laboratory, describes the important research in atomic and nuclear physics which is under way. Shows the nuclear reactor which is a source of relatively slow-moving subatomic particles, the "fast chopper" which is a rapidly rotating shutter which breaks up a beam into short bursts of neutrons which can be measured with great precision, and the bubble chamber which gives actual pictures of collisions between the subatomic bullets and atomic nuclei in the target." -WorldCat