Download or read book Low Frequency Phase Shift Measurement Techniques written by and published by . This book was released on 1967 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Low Frequency Phase Shift Method written by Ronnie Carroll McMillan and published by . This book was released on 1969 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The phase shift method of measuring atomic lifetimes is particularly useful because it allows us to make measurements in the steady state mode instead of in the transient mode. High frequency phase shift techniques cause many problems. The equipment, which was designed and built to make low frequency phase shift techniques possible, is shown schematically and discussed. The new experimental techniques employed in our apparatus are a phase multiplier and a unique method of using a photomultiplier as a mixer. In the photomultiplier the final dynode is used as the grid of a triode. The next to the last dynode may be thought of as the cathode of a triode normally used as a mixer. Using the photomultiplier in this fashion, we have a low noise, extremely efficient mixer. The phase multiplier is essential to accurately measure small phase angles. The problems of high frequency techniques are cited and references given. The speed of light was measured as a test of the equipment. The experimental values resulted in a .95 confidence interval containing the generally accepted value of the speed of light in air. The average value measured was (2.937 ± .033) x 108 meters per second, where .033 is the standard deviation for 48 trials. This average value represents an error of 1.61%. From the results we have established the feasibility of this low frequency method of measuring atomic lifetimes"--Abstract, leaves [i-ii].
Download or read book Electronic Measurement Techniques written by D. F. A. Edwards and published by Butterworth-Heinemann. This book was released on 2014-05-12 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electronic Measurement Techniques provides practical information concerning the techniques in electronic measurements and a working knowledge on how to adopt and use the appropriate measuring instruments. SI units are used as the unit of measurement in the book. The text contains chapters focusing on a variety of measurement techniques. The initial chapter discusses the system of measurements and principles used in electronic measurements. Subsequent chapters cover instruments for direct current measurement, electronic voltmeters, methods for the measurement of alternating currents and potential differences, and measurement of power. Chapters are also devoted to the elaboration of the construction of standards for comparison purposes and the measurement of non-electrical quantities. Engineers will find the book very useful.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 1460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Measurement Techniques in Space Plasmas written by Robert F. Pfaff and published by American Geophysical Union. This book was released on 1998-02-04 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 102. Space plasma measurements are conducted in a hostile, remote environment. The art and science of measurements gathered in space depend therefore on unique instrument designs and fabrication methods to an extent perhaps unprecedented in experimental physics. In-situ measurement of space plasmas constitutes an expensive, unforgiving, and highly visible form of scientific endeavor.
Download or read book Digital Measurement Techniques written by T. S. Rathore and published by Alpha Science Int'l Ltd.. This book was released on 2003 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work is intended for use in introductory courses or secondary courses in instumentation at the final year of undergraduate, or in the first year of postgraduate courses in electrical, electronics, instrumentation and computer engineering. It should also be of use to postgraduate students of physics interested in the area of electronic instrumentation and to researchers and praticing engineers.
Download or read book NBS Technical Note written by and published by . This book was released on 1965-04 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electromagnetic Metrology written by and published by . This book was released on 1975 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fiber Optic Test Measurement written by Inc. Igic and published by Information Gatekeepers Inc. This book was released on 1994 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Report of the National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1962 with total page 1598 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Report National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1967 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NBS Special Publication written by and published by . This book was released on 1967 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of Pavement Thickness by Rapid and Nondestructive Methods written by S. D. Howkins and published by . This book was released on 1968 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: The feasibility is investigated of various acoustic (sonic), nuclear, and electrical techniques for nondestructive measurement of Portland cement and bituminous concrete pavement thickness both during and after construction. Recommendations are made for equipment development and field testing of three specific methods that could potentially result in such measurements with the desired degree of speed and accuracy.
Download or read book Low Frequency Phase Measuring Techniques written by Eddie L. Cornelious and published by . This book was released on 1970 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the report is to theoretically analyze and evaluate a particular technique for accurately measuring phase at frequencies of 2 kHz or lower in a distance measuring mode for VHF/FM ground and airborne radio sets. The circuits discussed herein are for the phase measuring portion of the overall distance measuring equipment (DME) system. (Author).
Download or read book Advanced Optical Instruments and Techniques written by Daniel Malacara Hernández and published by CRC Press. This book was released on 2017-11-22 with total page 1136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Optical Instruments and Techniques includes twenty-three chapters providing processes, methods, and procedures of cutting-edge optics engineering design and instrumentation. Topics include biomedical instrumentation and basic and advanced interferometry. Optical metrology is discussed, including point and full-field methods. Active and adaptive optics, holography, radiometry, the human eye, and visible light are covered as well as materials, including photonics, nanophotonics, anisotropic materials, and metamaterials.
Download or read book Optical Methods for Solid Mechanics written by Pramod K. Rastogi and published by John Wiley & Sons. This book was released on 2013-03-11 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unique within the field for being written in a tutorial style, this textbook adopts a step-by-step approach to the background needed for understanding a wide range of full-field optical measurement techniques in solid mechanics. This method familiarizes readers with the essentials of imaging and full-field optical measurement techniques, helping them to identify the appropriate techniques and in assessing measurement systems. In addition, readers learn the appropriate rules of thumb as a guide to better experimental performance from the applied techniques. Rather than presenting an exhaustive overview on the subject, each chapter provides a concise introduction to the concepts and principles, integrates solved problems within the text, summarizes the essence at the end, and includes unsolved problems. With its coverage of topics also relevant for industry, this text is aimed at graduate students, researchers, and engineers involved in non-destructive testing for acoustics, mechanics, medicine, diagnosis on artwork and construction, and civil engineering.
Download or read book Precision Measurement and Calibration written by Arthur J. Estin and published by . This book was released on 1970 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
