Recent Developments Lamp Life Testing by Skogland (5 results)
- Softcover
Seller: PBShop.store US, Wood Dale, IL, U.S.A.PBShop.store US
Contact seller5-star sellerCondition: New
£ 20.54
Free ShippingShips within U.S.A.Quantity: 15 available
PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000.
- Softcover
Seller: PBShop.store UK, Fairford, GLOS, United KingdomPBShop.store UK
Contact seller5-star sellerCondition: New
£ 20.19
£ 3.29 shippingShips from United Kingdom to U.S.A.Quantity: 15 available
PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000.
- Softcover
- Print on Demand
Seller: Forgotten Books, London, United KingdomForgotten Books
Contact seller5-star sellerCondition: New
£ 12.99
Free ShippingShips from United Kingdom to U.S.A.Quantity: Over 20 available
Paperback. Condition: 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.
Language: English
- Hardcover
- Print on Demand
Seller: S N Books World, Delhi, IndiaS N Books World
Contact seller5-star sellerLeatherbound. Condition: NEW. BOOKS ARE EXEMPT FROM IMPORT DUTIES AND TARIFFS; NO EXTRA CHARGES APPLY. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt bands. A perfect gift for your loved ones. Reprinted from 1926 edition.… NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set and contains approximately 30 pages. IF YOU WISH TO ORDER PARTICULAR VOLUME OR ALL THE VOLUMES YOU CAN CONTACT US. Resized as per current standards. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Language: English.
- Hardcover
- Print on Demand
Seller: True World of Books, Delhi, IndiaTrue World of Books
Contact seller5-star sellerLeatherBound. Condition: New. BOOKS ARE EXEMPT FROM IMPORT DUTIES AND TARIFFS; NO EXTRA CHARGES APPLY. LeatherBound edition. Condition: New. Reprinted from 1926 edition. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt band…s. A perfect gift for your loved ones. Pages: 36 NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Pages: 36 Volume Technologic Papers of the Bureau of Standards, (1926) T 325.
