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Colors of Signal Lights
The report is intended to serve as a reference work for all those concerned with the selection, specifications, and use of signal * -light colors.It discusses the nature of the problem, and the mathematical representation, recognition, production, control, and use of such colors.The characteristics of different types of chromaticity boundaries and the purpose and effect of the requirement for similarity of chromaticity characteristics are given special consideration.The treatment is varied according to the intended use.The discussion of the control of colors and the section on the use of colors are nontechnical, whereas the section on the production of signal colors is designed for the colorimetrist who is faced with the problem of selecting limit filters or drafting a specification.(Author).
High Brightness Light Emitting Diodes
Volume 48in the Semiconductors and Semimetals series discusses the physics and chemistry of electronic materials, a subject of growing practical importance in the semiconductor devices industry. The contributors discuss the current state of knowledge and provide insight into future developments of this important field.
Safety at Street Works and Road Works
This publication sets out the statutory requirements for signing, lighting, and guarding at street works and road works. This is the core reference manual for utility companies, local authorities, street work contractors and others whose day-to-day business involves street works (works by statutory undertakers and other utility companies etc) and road works (works to maintain or repair road infrastructure). The code, which covers all of the UK and includes national variations, is now compulsory for highway/road authorities in England, Wales and Northern Ireland. It applies to all single carriageway roads and dual carriageways with a speed limit of 40 mph or less. The code is now divided into...
TM 9-718A 90-mm Gun Tank M47 1952
TM 9-718A 90-mm Gun Tank M47 1952-01-09 "The 90-mm gun tank M47 is a heavily-armored, full-track-laying, low-silhouette, combat vehicle, mounting a 90-mm gun T119E1 (figs. 1 through 8). One cal. .30 machine gun M1919A4 is installed in a flexible ball mount in the bow (fig. 13) and a cal. .50 machine gun M2, HE or a cal. .30 machine gun is mounted coaxially with the 90-mm gun in the combination gun mount (fig. 39). One cal. .50 machine gun M2, HB with a pintle mount is installed in a pintle stand on the turret roof (fig. 5). This vehicle carries a crew of five vehicle commander, driver, assistant driver (also, cal. .30 gunner), loader, and gunner."
