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A Manual of Physical Measurements

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Description:From the Introduction:WORK in the Physical Laboratory brings the student into first-hand touch with physical principles and physical apparatus, and the impressions produced through the senses furnish a solid foundation for further study.The close attention to every detail and the exercise of deliberate judgment which are required in every experiment if a worthy result is to be obtained, tend to produce a habit of accuracy which is of inestimable value. This training is obtained only when every effort is made to get the very best result that the time allowed for the experiment and the apparatus employed will permit.Before observations on any experiment are begun, the theory of the experiment should be mastered as well as the functions of the various parts of the apparatus which is to be used. Without such study, necessary observations may be omitted or taken in the wrong way, and apparatus whose value depends upon its accuracy may be injured permanently because of a lack of knowledge about its delicate parts. Furthermore it is important to determine the degree of accuracy of every result which is obtained.Errors. - For various reasons it is impossible to obtain the absolute value of an unknown quantity. Any measurement is affected, to a greater or less extent, by errors which may be classified under the two heads: constant and accidental.As examples of constant errors may be mentioned the following:Physical errors, or errors which arise out of physical sources, e.g., change of length of a steel tape with temperature; instrumental errors, such as faulty construction or adjustment of apparatus; personal errors, or the personal equation; blunders.Constant errors can with proper care be eliminated or corrected for. Under accidental errors are grouped those which remain after the constant errors have been taken into account. It is not possible to determine the magnitude of the accidental error. The best that can be done is to determine the probable limits within which the true result lies.A number of rules' and methods for finding these limits have been developed in the Theory of Least Squares. On page 213 of the appendix is given a resume of those parts of the theory which apply to measurements made in the physical laboratory.The rigid application of these rules in the elementary laboratory is hardly justifiable. However, some simple method for determining the first figure in the result affected by the accidental error, is necessary and therefore the mastery of the following is required....We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with A Manual of Physical Measurements. To get started finding A Manual of Physical Measurements, you are right to find our website which has a comprehensive collection of manuals listed.
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Pages: 266

Format: PDF, EPUB & Kindle Edition

Publisher: Createspace Independent Publishing Platform

Release: 2014

ISBN: 1502900491

Description: From the Introduction:WORK in the Physical Laboratory brings the student into first-hand touch with physical principles and physical apparatus, and the impressions produced through the senses furnish a solid foundation for further study.The close attention to every detail and the exercise of deliberate judgment which are required in every experiment if a worthy result is to be obtained, tend to produce a habit of accuracy which is of inestimable value. This training is obtained only when every effort is made to get the very best result that the time allowed for the experiment and the apparatus employed will permit.Before observations on any experiment are begun, the theory of the experiment should be mastered as well as the functions of the various parts of the apparatus which is to be used. Without such study, necessary observations may be omitted or taken in the wrong way, and apparatus whose value depends upon its accuracy may be injured permanently because of a lack of knowledge about its delicate parts. Furthermore it is important to determine the degree of accuracy of every result which is obtained.Errors. - For various reasons it is impossible to obtain the absolute value of an unknown quantity. Any measurement is affected, to a greater or less extent, by errors which may be classified under the two heads: constant and accidental.As examples of constant errors may be mentioned the following:Physical errors, or errors which arise out of physical sources, e.g., change of length of a steel tape with temperature; instrumental errors, such as faulty construction or adjustment of apparatus; personal errors, or the personal equation; blunders.Constant errors can with proper care be eliminated or corrected for. Under accidental errors are grouped those which remain after the constant errors have been taken into account. It is not possible to determine the magnitude of the accidental error. The best that can be done is to determine the probable limits within which the true result lies.A number of rules' and methods for finding these limits have been developed in the Theory of Least Squares. On page 213 of the appendix is given a resume of those parts of the theory which apply to measurements made in the physical laboratory.The rigid application of these rules in the elementary laboratory is hardly justifiable. However, some simple method for determining the first figure in the result affected by the accidental error, is necessary and therefore the mastery of the following is required....We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with A Manual of Physical Measurements. To get started finding A Manual of Physical Measurements, you are right to find our website which has a comprehensive collection of manuals listed.
Our library is the biggest of these that have literally hundreds of thousands of different products represented.

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A Manual of Physical Measurements

A Manual of Physical Measurements

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