The digital edition of all books may be viewed on our website before purchase. Excerpt from The Spectral Distribution of Energy Required to Evoke the Gray Sensation
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Vendeur : Forgotten Books, London, Royaume-Uni
Paperback. Etat : New. Print on Demand. This book investigates an objective physical standard for defining white light, also known as gray, based on the Planckian distribution of energy required to elicit the hueless sensation. The author found that white light may be described theoretically by light from a Planckian radiator at approximately 5000 degrees Kelvin or, practically speaking, by average noon sunlight at Washington, DC. However, the author emphasizes the need for a more extensive statistical investigation to establish such a standard. The book also includes a thought-provoking discussion on the desirability of an extensive statistical determination and correlation of the characteristics of vision. 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 réf. du vendeur 9781334256301_0
Quantité disponible : Plus de 20 disponibles
Vendeur : PBShop.store US, Wood Dale, IL, Etats-Unis
PAP. Etat : New. New Book. Shipped from UK. Established seller since 2000. N° de réf. du vendeur LW-9781334256301
Quantité disponible : 15 disponible(s)
Vendeur : PBShop.store UK, Fairford, GLOS, Royaume-Uni
PAP. Etat : New. New Book. Shipped from UK. Established seller since 2000. N° de réf. du vendeur LW-9781334256301
Quantité disponible : 15 disponible(s)