Size of Letters Required for Visibility as a Function of Viewing Distance and Observer Visual Acuity (Classic Reprint) - Brossura

Howett, Gerald L.

9781527841406: Size of Letters Required for Visibility as a Function of Viewing Distance and Observer Visual Acuity (Classic Reprint)

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ISBN 10: 1527841405 ISBN 13: 9781527841406

Casa editrice: Forgotten Books, 2019

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Excerpt from Size of Letters Required for Visibility as a Function of Viewing Distance and Observer Visual Acuity

Log-log plot of visual acuity ratio as a function of background-luminance ratio [eq.

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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.

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Editore: Forgotten Books
Data di pubblicazione: 2019
Lingua: Inglese
ISBN 10: 1527841405
ISBN 13: 9781527841406
Rilegatura: Copertina flessibile
Numero di pagine: 80
Contatto del produttore: Copytech (UK) Ltd, Trading as Printondemand-worldwide.com
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Size of Letters Required for Visibility as a Function of Viewing Distance and

Gerald L. Howett

Editore: Forgotten Books, 2024

ISBN 10: 1527841405 ISBN 13: 9781527841406

Nuovo Paperback

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Da: Forgotten Books, London, Regno Unito

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Paperback. Condizione: New. Print on Demand. This book explores the crucial link between letter size and visibility in signage, providing practical guidance for designers and specifiers. Drawing on a wealth of empirical research, the author presents a simple formula that determines the optimal letter size for any given viewing distance and observer visual acuity. The formula is based on the assumption that beyond a few meters, a person's visual acuity is primarily determined by the visual angle subtended by an object. By incorporating allowances for variations in contrast and background luminance, the book equips readers with the tools to compensate for non-standard conditions. The author emphasizes that letter size should not be a one-size-fits-all approach but rather customized to accommodate different viewing distances and individual visual abilities. Proper consideration of these factors ensures effective communication and safety, particularly in situations where signs convey critical information or warnings. 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. Codice articolo 9781527841406_0

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