Issues

In summarizing what is known and speculated about Jupiter, the largest of our planetary neighbors, the following article also serves as an indication of how much still remains to be known. The authors are astronomers Rupert Wildt and Harlan J. Smith of Yale and physicists Edwin E. Salpeter of Cornell and Alastair G. W. Cameron of the Institute for Space Studies.

A revision of the international practical scale of temperatures is in the making, and some steps being taken in that direction are discussed in this account of the most recent meeting of the Advisory Committee on Thermometry of the International Committee on Weights and Measures. The author is dean of the College of Chemistry and Physics at Pennsylvania State University.

Data were compiled from the National Register of Scientific and Technical Personnel maintained by the National Science Foundation so that timely information would be available on the supply and professional characteristics of scientific personnel in important science fields. Information in the National Register is updated every two years. The data presented here are preliminary results from the 1962 questionnaire returns. The American Institute of Physics is responsible for the Physics and Astronomy Section which comprises about ten percent of the total National Register.

This summary article, written by George E. Hudson of the New York University Physics Department and William Atkinson of the Radio Standards Laboratory of the National Bureau of Standards, resulted from an informal discussion period during the International Conference on Precision Electromagnetic Measurements, which was held August 14–17, 1962, in Boulder, Colo. Norman Ramsey of Harvard presided. Sponsored by the NBS Radio Standards Laboratory in Boulder, the IRE Professional Group on Instrumentation, and the AIEE Instrumentation Division, the conference was partially supported by the National Science Foundation.

Submitted by the Director and accepted by the Governing Board of the American Institute of Physics as its Annual Report to the Member Societies of the AIP, March 16, 1963.