An "Average Eye" For Heterochromatic Photometry, and a Comparison of a Flicker and an Equality-of-Brightness Photometer (Classic Reprint) - Couverture souple

Crittenden, E. C.

9781333935078: An "Average Eye" For Heterochromatic Photometry, and a Comparison of a Flicker and an Equality-of-Brightness Photometer (Classic Reprint)

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ISBN 10 : 1333935072 ISBN 13 : 9781333935078

Editeur : Forgotten Books, 2018

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Direct comparison of flicker and equality-of-brightness photometers, using many observers to define an average eye

This study examines how two common photometry methods compare when measuring color differences and lamp intensities. The author records readings from a large group of observers to establish average values and investigate how individual differences affect results. The work combines careful apparatus setup with practical tests on incandescent lamps and blue color solutions, aiming to improve accuracy in color-difference measurements. In accessible terms, the book shows how measurements shift with observer variation and method choice. It also discusses reproducibility, field sizes in the photometers, and how to interpret differences between flicker-based readings and brightness-match readings in real-world lighting work.

How two photometers differ in practice for color-difference measurements
How observer variability influences reported transmissions and lamp comparisons
Details on setup, calibration, and data interpretation to improve measurement reliability
Guidance on applying correction curves to align results across observers

Ideal for readers involved in photometry, lamp testing, and color-difference research who want a data-driven look at measurement reliability and method choice.

Les informations fournies dans la section � Synopsis � peuvent faire r�f�rence � une autre �dition de ce titre.

�diteur: Forgotten Books
Date d'�dition: 2018
Langue: anglais
ISBN 10: 1333935072
ISBN 13: 9781333935078
Reliure: Broch�
Nombre de pages: 31
Coordonn�es du fabricant: Copytech (UK) Ltd, Trading as Printondemand-worldwide.com
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An "Average Eye" For Heterochromatic Photometry (Classic Reprint)

E. C. Crittenden, F. K. Richtmyer

Edit� par Forgotten Books, 2018

ISBN 10 : 1333935072 ISBN 13 : 9781333935078

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Vendeur : Forgotten Books, London, Royaume-Uni

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Paperback. Etat : New. Print on Demand. This book investigates the human eye's capacity for distinguishing between colors, especially yellow and blue, and how the differences in human perception can lead to different photometric measurements. The author explores both icker and Lummer-Brodhun photometers and determines which is best suited to take accurate photometric measurements. The author discusses the characteristics of a "normal" observer and how to select observers for accurate measurements. The author concludes that the icker photometer, used under specific conditions, provides the most certainty and reduces the labor needed to attain accurate results. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. N� de r�f. du vendeur 9781333935078_0

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