We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
UNDERSTANDING THE ATOM SERIES 59 Institute of Nuclear Studies and regular lecturer of the series. Dr. Sea- borg outlines briefly the types of experiments which were used in the production of transuranium elements. These have been discovered using exceedingly ingenious approaches involving quite complex electronics and highly refined chemical techniques. Various sources have been employed in producing the new elements. These have included various types of accelerators, uranium reactors, and in several cases the first production of elements was in weapons testing experiments. The higher atomic number elements have been produced by the bombardment of targets with nuclei such as boron and nitrogen. Dr. Seaborg points out that elements not yet discovered will be characterized by very short half lives and will require electronic means for their testing rather than chemical techniques. The film discusses applications to other chemical problems such as the mechanism of photosynthesis and the use of special techniques such as isotope dilution analysis. Of considerable interest also is the de- scription of Carbon-14 dating. The lecturer closes with a strong statement regarding the need for scientists and the importance of good scientific training in schools. NUCLEAR REACTIONS (1963). 29 1 / 2 minutes. Produced by the Educational Broadcasting Corporation, New York City, under the direction of the USAEC's Division of Nu- clear Education and Training. For sale by Byron Motion Pictures, at $33.06 per print, including shipping case. This segment of the series continues the discussion of the film "Alpha, Beta, and Gamma," and involves some of the basic concepts of nuclear reactions. Neutron capture processes are described with the gamma emission and particle ejection reactions being studied. Nuclear fission is also discussed. As an example of the calculations involved in nu- clear reactions, the film describes the activation of a gold sample in a nuclear reactor. Emphasis is placed on the minute quantities which can be detected with the subsequent applications to the technique of activa- tion analysis. It is shown that hundredths of a part per billion of certain materials can be detected by nuclear techniques. PROPERTIES OF RADIATION (1962). 30 minutes. Produced by the Educational Broadcasting Corporation, New York City, under the direction of the USAEC's Division of Iso- tope Development. For sale by Byron Motion Pictures, at $32.06 per print, including shipping case. This film includes a discussion of general problems of radiation de- cay, such as the laws of radioactive decay, including the concept of half life. Statistical considerations are introduced, and the basic notion of the standard deviation in counts expected in various experiments is described. The energy spectrum from alpha and beta emitters is con-