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

Unknown

ISBN 10: 1527841405 / ISBN 13: 9781527841406

Published by Forgotten Books, 2024

About this Item

Seller Inventory # 26387158834

Bibliographic Details

• Title: Size of Letters Required for Visibility as a Function of Viewing Distance and Observer Visual Acuity (Classic Reprint)
• Publisher: Forgotten Books
• Publication Date: 2024
• Language: English
• ISBN 10: 1527841405
• ISBN 13: 9781527841406
• Binding: Soft cover
• Condition: New

About this title

Synopsis

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.