9781528127844 - recent developments in lamp life-testing equipment and methods (classic reprint) di skogland, j. f. (3 risultati)
- Brossura
Da: PBShop.store US, Wood Dale, IL, U.S.A.PBShop.store US
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 23,97
Spedizione gratuitaSpedito in U.S.A.Quantità: 15 disponibili
PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.
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Da: PBShop.store UK, Fairford, GLOS, Regno UnitoPBShop.store UK
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 24,28
EUR 3,84 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 15 disponibili
PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.
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- Print on Demand
Da: Forgotten Books, London, Regno UnitoForgotten Books
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 15,16
Spedizione gratuitaSpedito da Regno Unito a U.S.A.Quantità: Più di 20 disponibili
Paperback. Condizione: New. Print on Demand. This book details the development of specialized light-measurement equipment and methods that revolutionized the testing of incandescent lamps. The author describes how these innovations simplified the process of ensuring lamps met performance and efficiency standards. The text covers… initial rating tests, voltage regulation, and periodic measurements during lamp life. It outlines how the devices could be used to calculate mean light output and efficiency over a lamp's lifespan, a crucial factor in determining compliance with specifications. The author explains how a series of logarithmic scales were used to compute required values of lumens per watt, percentage light output, and percentage efficiency. The book reveals how these scales could be adapted to both horizontal photometers and integrating sphere photometers, allowing for more precise and efficient measurements. It concludes by emphasizing the significance of these innovations in advancing the field of lamp life testing and ensuring the delivery of high-quality lighting products. 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.
