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Long baseline interferometry achieves high angular resolution by using two (or more) widely separated radio telescopes and recording video signals on magnetic tapes, which are later brought together and cross-correlated. This paper contains discussions of the coherence and timing requirements, and of calibration procedures. Applications to measuring brightness distributions and to spectroscopy are reviewed briefly. Some pertinent phenomena connected with radio wave scattering in irregular media are discussed. (Author).
It is a pleasure to have the privilege of writing the foreword for a book edited by Dr. Francis F. Foldes. Dr. Foldes has collected in one convenient place a discussion and description of enzyme systems of use to the anesthesiologist and to those other individuals, such as undergraduate and graduate students in related basic sciences, who will profit by and can make use of this body of information. The practicing anesthesiologist and those who work in related fields have become increasingly aware of the need to understand enzyme activities which influence the uptake, distribution, and excretion of those substances that are used in the anesthetic management of surgical patients. A variety of ...
Three principal methods are used to obtain high angular resolution at radio wavelengths: interferometry, lunar occultations, and interplanetary scintillations. These methods are reviewed and compared. Typical results are presented. A general tabulation of all interferometric results at resolution higher than one second of arc is also included. (Author).