Author: George Kimball Burgess
Publisher:
ISBN:
Category : Pyrometers
Languages : en
Pages : 88

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Author: George K. Burgess
Publisher:
ISBN:
Category : Pyrometers
Languages : en
Pages : 2

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Author: George K. Burgess
Publisher: Forgotten Books
ISBN: 9781334253379
Category : Science
Languages : en
Pages : 96

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Excerpt from Characteristics of Radiation Pyrometers A Fery mirror pyrometer, however, calibrated at temperatures in the region 500 to I 500 C could not be used to determine the apparent temperature of the sun, for example, without a careful consideration of the corrections for the selective re ection of the gold, because the maximum portion of the solar energy is confined to the region of the selectivity of gold. The apparent tempera tures measured would be far smaller than the true apparent tem peratures. Even at a temperature of the black body of 4000 C the gold mirror re ects but 87 per cent 0f the total energy falling upon it, and from the slope of the curve of Fig. 5 it is seen that at the sun's temperature (say 6000 C) the re ection coefficient will be somewhere in the neighborhood of 60 to 70 per cent. A re ec tion coefficient of 68 per cent means an error in temperature measurement of some 500 at 6000 C. Without doubt a silver or platinum mirror would be found much more satisfactory than the gold mirror for these high temperatures, but even these mate rials could not be used without applying large corrections. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."

Author: Paul D. Foote
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Peter Coates
Publisher: CRC Press
ISBN: 1315349701
Category : Science
Languages : en
Pages : 202

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Authored by two highly respected experts in this specialist area, The Fundamentals of Radiation Thermometers is an essential resource for anyone intending to measure the temperature of an object using the radiated energy from that object. This readable, user-friendly book gives important background knowledge for anyone working in the field of non-contact thermometry. The book begins with an accessible account of how temperature scales are set up and defined, and explores the historic development of temperature scales and Planck’s radiation law. Through explaining the reliability of both emissivity values and extrapolation to different wavelengths and temperatures, the book provides a foundation for understanding when a valid measurement with realistic uncertainties has been made, or if an inappropriate emissivity value has been used with consequent unknown errors. The book also presents the hardware of radiation thermometers, allowing the reader to specify an appropriate design for a particular measurement problem. It explores multi-wavelength radiation thermometry and its associated pitfalls, and a final chapter suggests strategies to minimise the uncertainties from unreliable emissivity data.

Author: David P. DeWitt
Publisher: John Wiley & Sons
ISBN: 9780471610182
Category : Technology & Engineering
Languages : en
Pages : 1156

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Here is the most comprehensive treatment available on practical temperature measurement methods using radiation thermometry. All aspects of measurement technology are covered: basic principles, types of radiation thermometers, calibration methods, and applications. Covers the latest instruments and discusses the central problem of radiation thermometry--how to infer the true temperature from the indicated temperature. Generously illustrated.

Author: Alfred S. Nadel
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Charles William Ricker
Publisher:
ISBN:
Category : Radiation pyrometers
Languages : en
Pages : 80

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Author: United States. National Bureau of Standards
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 732

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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 682

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