E b rosa e c crittenden (1 risultati)

Paperback. Condizione: New. Print on Demand. This book delves into the fascinating world of photometry, specifically focusing on the quest for accurate and reproducible light standards. It transports readers back to a time when gas lighting was prevalent, and scientists grappled with the challenges of measuring and standardizing illumination. The author meticulously examines various flame standards, such as the Hefner and pentane lamps, dissecting their construction, operation, and the factors influencing their light output. He explores the intricacies of atmospheric conditions, including barometric pressure and humidity, and their impact on flame intensity. Through detailed experimental data and insightful analysis, the book unveils the complexities and limitations of early flame standards. It highlights the ongoing efforts to refine these standards and the challenges of achieving perfect reproducibility. Ultimately, this book offers a valuable glimpse into the historical development of photometry and the scientific pursuit of precision in light measurement, shedding light on the foundations of our understanding of illumination and its measurement. 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.…