william wensel (3 resultados)

Paperback. Condición: Very Good. No Jacket. May have limited writing in cover pages. Pages are unmarked. ~ ThriftBooks: Read More, Spend Less.

paperback. Condición: Very Good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority!

Paperback. Condición: New. Print on Demand. This book examines the 1908 proposal by Waidner and Burgess for a reproducible standard of light, finally realized through the brightness of a hollow inclosure of fused thorium oxide immersed in freezing platinum. The authors discuss the history of black body standards, the challenges faced by previous researchers, and the significance of their findings. The book delves into the technical details of the experiment, including the apparatus, methods, and results, and explores the implications of the findings for the definition and maintenance of the international standard of light. This book is a valuable resource for researchers and practitioners in photometry, illuminating engineering, and related fields, providing a comprehensive understanding of the development and significance of black body standards in lighting. 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.