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Measuring Big G The Newtonian Constant With A Frequency Metrology Approach
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Book Synopsis Measuring 'Big G', the Newtonian Constant, with a Frequency Metrology Approach by : Andrea De Marchi
Download or read book Measuring 'Big G', the Newtonian Constant, with a Frequency Metrology Approach written by Andrea De Marchi and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A new approach is described and discussed to the determination of the Newtonian gravitational constant G, which is based on the very powerful measurement of the frequency difference between two similar oscillators. The rate of change of time delay between the two is equal to their relative frequency difference, and small variations of either one can then be detected via delay monitoring with resolution limited only by time resolution and frequency stability of the two oscillators. The latter should be highly sensitive to gravitational field, to measure G, which triggers the choice of simple pendulums as field detectors. Since the relative effect on frequency readily obtainable in the lab by well-controlled variations of the gravitational field is on the order of 10−7, stabilities on the order of 10−12 are needed of the relative frequency difference if measurement of the fifth decimal digit of G is the target of the experiment. It is argued that such high stability is possible with a pendulum properly designed for being locally isochronous and showing an adequately high Q factor. The latter is projected to reach possibly 107 or more with the discussed design.
Book Synopsis A Measurement of the Newtonian Gravitational Constant G by : Charles Elliott Goldblum
Download or read book A Measurement of the Newtonian Gravitational Constant G written by Charles Elliott Goldblum and published by . This book was released on 1987 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metrology written by Anil Akdogan and published by BoD – Books on Demand. This book was released on 2018-08-01 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metrology, the science of measurement, is crucial for many sciences and technological developments. Since metrology helps to improve many other sciences, the book reflects in general metrology and some special metrological approaches at different fields such as radiation and frequency measurements in detail. This book also focuses on technical testing and control applications in the industry. It also intends the fundamentals of metrology concerning the related standards and systems of units. In addition, the book considers the calibration of measurement instruments and measurement uncertainties as the basic requirements of the related quality standards.
Book Synopsis Precision measurement of the Newtonian gravitational constant, G. by : Ralph A. Lowry
Download or read book Precision measurement of the Newtonian gravitational constant, G. written by Ralph A. Lowry and published by . This book was released on 1974 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Big G written by Ronald Sherrod and published by Independently Published. This book was released on 2021-10-06 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Newtonian constant of gravitation, G (often referred to as "big G"), is one of the most important of the universal fundamental physical constants. However, its value is the least well-determined of all such constants. This is because G is very difficult to measure reliably. Even though the gravitational force is responsible for star and galaxy formation on the massive scale of the universe, the force itself is minuscule on the tiny scale of the laboratory masses which must be used in the measurement. Consequently, its experimental value is prone to a high degree of inaccuracy. Moreover, it is the viewpoint of most physicists that G is not related to the other fundamental physical constants by any theory or understanding that is currently available. Therefore, it is thought that the value of G can only be obtained by measurement, and not from evaluating it in terms of other fundamental constants whose values are known with much greater precision and accuracy. The work presented in the book is an attempt to break through this mental barrier by demonstrating through numerical analysis that G is definitely related to the other fundamental constants. Consequently, it is possible to propose an exact value for G (to nine significant figures) that is obtainable from evaluation instead of from measurement.
Book Synopsis Recent Advances in Metrology and Fundamental Constants by : T.J. Quinn
Download or read book Recent Advances in Metrology and Fundamental Constants written by T.J. Quinn and published by IOS Press. This book was released on 2001-12-18 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt: The exchange between physics and metrology is always fascinating and exciting. Many are the open problems in physics that call for extremely precise standards, many are the advances in metrology made possible by a deep and assiduous study of the underlying physics. One has just to think of the enormous sophistication required in the measurements of some absolute quantities such as the Avogadro, the gas, or the gravitational constants. It is also worth noticing that not only the units of a metrological system are interrelated through the fundamental constants, but also the latter find their full significance when they are determined through the most exacting metrological experiments. Over the past decade many improvements took place and these are discussed in this book; from one side the old caesium SI second definition has found a new realisation, with the “fountain” approach, replacing the classical thermal atomic beam. The use of “cold” atom techniques, in which bunches of inert atoms are collected, slowed down, and cooled, has opened a number of new and unexpected avenues for metrology and fundamental constants; one of these possibilities being the atom interferometry. Another important “quantum jump” was the demonstration of the possibility of performing a direct frequency division in the visible, using ultra short femtosecond pulses. In addition, the possibility of “counting” electrons or photons gave a fundamental support to the development of single-electron capacitance standards and to new scenarios in the absolute calibration of photo-detectors.
Author :International School of Physics "Enrico Fermi" Publisher :IOS Press ISBN 13 :1607502739 Total Pages :683 pages Book Rating :4.6/5 (75 download)
Book Synopsis Metrology and Fundamental Constants by : International School of Physics "Enrico Fermi"
Download or read book Metrology and Fundamental Constants written by International School of Physics "Enrico Fermi" and published by IOS Press. This book was released on 2007-10-26 with total page 683 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume can be justified by the following three facts, the need to provide, from time to time, a co-ordinated set of lectures which present the relevant progress in Metrology, the increasing intertwining between Fundamental Physics and the practice of Metrological Measurements, and, third, the flurry of new and unexpected discoveries in this field, with a correlated series of Nobel Prizes bestowed to individuals working in Fundamental Constants research and novel experimental methods. One of the most fascinating and exciting characteristics of metrology is its intimate relationship between fundamental physics and the leading edge of technology which is needed to perform advanced and challenging experiments and measurements, as well as the determination of the values and interrelations between the Fundamental Constants. In some cases, such as the caesium fountains clocks or the optical frequency standards, the definition of the value of a quantity is, in the laboratory, in the region of 10-16 and experiments are under way to reach 10-18. Many of these results and the avenues leading to further advances are discussed in this volume, along a major step in metrology, expected in the near future, which could change the “old” definition of the kilogram, still based on a mechanical artefact, toward a new definition resting on a fixed value of a fundamental constant.
Book Synopsis Precision Measurement and Fundamental Constants; Proceedings by : Barry N. Taylor
Download or read book Precision Measurement and Fundamental Constants; Proceedings written by Barry N. Taylor and published by . This book was released on 1971 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantum Metrology and Fundamental Physical Constants by : A.A. Lucas
Download or read book Quantum Metrology and Fundamental Physical Constants written by A.A. Lucas and published by Springer Science & Business Media. This book was released on 2013-12-01 with total page 647 pages. Available in PDF, EPUB and Kindle. Book excerpt: The object of this NATO Advanced Study Institute was to pre sent a tutorial 'introduction both to the basic physics of recent spectacular advances achieved in the field of metrology and to the determination of fundamental physical constants. When humans began to qualify their description of natural phenomena, metrology, the science of measurement, developed along side geometry and mathematics. However, flam antiquity to modern times, the role of metrology was mostly restricted to the need of commercial, social or scientific transactions of local or at most national scope. Beginning with the Renaissance, and particularly in western Europe during the last century, metrology rapidly developed an international character as a result of growing needs for more accurate measurements and common standards in the emerging indus trial society. Although the concerns of metrology are deeply rooted to fundamental sciences, it was, until recently, perceived by much of the scientific community as mostly custodial in character.
Book Synopsis Analysis and evaluation of errors in the measurement of the newtonian gravitational constant (g). by : William Russell Towler
Download or read book Analysis and evaluation of errors in the measurement of the newtonian gravitational constant (g). written by William Russell Towler and published by . This book was released on 1976 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Newtonian Gravitational Constant by : George T. Gillies
Download or read book The Newtonian Gravitational Constant written by George T. Gillies and published by . This book was released on 1983 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Preliminary Data for a New Measurement of Newton's Gravitational Constant, G by : Branton P. Moncriffe
Download or read book Preliminary Data for a New Measurement of Newton's Gravitational Constant, G written by Branton P. Moncriffe and published by . This book was released on 2007 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dark Matter in Cosmology, Quantum Measurements, Experimental Gravitation by : R. Ansari
Download or read book Dark Matter in Cosmology, Quantum Measurements, Experimental Gravitation written by R. Ansari and published by Atlantica Séguier Frontières. This book was released on 1996 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Search for Non-Newtonian Gravity by : Ephraim Fischbach
Download or read book The Search for Non-Newtonian Gravity written by Ephraim Fischbach and published by Springer Science & Business Media. This book was released on 1998-10-01 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: A history of the attempts to test the predictions of Newtonian Gravity, describing in detail recent experimental efforts to verify both the inverse-square law and the Equivalence Principle. Interest in these questions has increased in recent years, as it has become recognised that deviations from Newtonian gravity could be a signal for a new fundamental force in nature. This is the first book devoted entirely to this subject, and will thus be useful to both graduate students and researchers interested in this field. It describes the ideas that underlie searches for such deviations, focusing on macroscopic tests. A comprehensive bibliography of some 450 entries supplements the text.
Download or read book Mass Metrology written by S. V. Gupta and published by Springer Science & Business Media. This book was released on 2012-01-26 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the practical aspects of mass measurements. Concepts of gravitational, inertial and conventional mass and details of the variation of acceleration of gravity are described. The Metric Convention and International Prototype Kilogram and BIPM standards are described. The effect of change of gravity on the indication of electronic balances is derived with respect of latitude, altitude and earth topography. The classification of weights by OIML is discussed. Maximum permissible errors in different categories of weights prescribed by national and international organizations are presented. Starting with the necessity of redefining the unit kilogram in terms of physical constants, various methods of defining the kilogram in terms of physical constants are described. The kilogram can be defined by Avogadro’s constant, ion collection of some heavy elements, levitation, voltage and Watt Balance. The detection of very small mass of the order of zeptogram through Nanotechnolgy is also discussed. Latest recommendations of CIPM are given.
Book Synopsis Measurements of Newtonian Gravitation by : George T. Gillies
Download or read book Measurements of Newtonian Gravitation written by George T. Gillies and published by . This book was released on 1992 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rheological Measurement by : A.A. Collyer
Download or read book Rheological Measurement written by A.A. Collyer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt: In an area as vast and important as rheology, it is essential that the experimentalist understands the underlying theories and shortcomings of the measurement technique used, that they are aware of the likely microstructure of the fluid under study and that from this they can appreciate how the fluid and the measuring system interact with each other. This major handbook, written by an international group of experts in the range of rheological techniques, presents the state of the art in rheological measurement, and concentrates on the techniques and underlying physical principles. The second edition, fully revised and updated to include new techniques is invaluable to polymer and materials scientists, engineers and technologists, and anyone else making rheological measurements on materials whether they be polymeric, biological, slurries, food or other complex fluids.
