Size of Letters Required for Visibility as a Function of Viewing Distance and Observer Visual Acuity (Classic Reprint) - Softcover
Synopsis
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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Size of Letters Required for Visibility as a Function of Viewing Distance and
Print on DemandSeller: Forgotten Books, London, United Kingdom
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Paperback. Condition: 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. Seller Inventory # 9781527841406_0
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Size of Letters Required for Visibility as a Function of Viewing Distance and Observer Visual Acuity (Classic Reprint)
Seller: PBShop.store US, Wood Dale, IL, U.S.A.
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PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LX-9781527841406
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Size of Letters Required for Visibility as a Function of Viewing Distance and Observer Visual Acuity (Classic Reprint)
Seller: PBShop.store UK, Fairford, GLOS, United Kingdom
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PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LX-9781527841406
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Size of Letters Required for Visibility as a Function of Viewing Distance and Observer Visual Acuity (Classic Reprint)
Seller: Books Puddle, New York, NY, U.S.A.
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Condition: New. Seller Inventory # 26387158834