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Author : George Wiles Middlekauff,Barry Mulligan,James Franz Skogland
Publisher : Unknown
Page : 28 pages
File Size : 43,5 Mb
Release : 1916
Category : Incandescent lamps
ISBN : UOM:39015086558924
Author : G. W. Middlekauff
Publisher : Forgotten Books
Page : 32 pages
File Size : 40,7 Mb
Release : 2018-02-08
Category : Technology & Engineering
ISBN : 0656082062
Excerpt from Life Testing of Incandescent Lamps at the Bureau of Standards The introduction Of new classes Of lamps, however, rendered it advisable to make considerable changes in the original photo metric equipment and in the details of the method Of testing. These changes have been made from time to time by those who have been most intimately associated with the work. The equip ment as it now stands and the present method Of the Bureau's life-testing procedure in all its details are, therefore, the result Of a gradual development in which various persons have been Of assistance. From the beginning the magnitude Of the work of inspection and life testing has been constantly increasing year by year in consequence of the natural growth of the Government's pur chases Of incandescent lamps. Fortunately, however, the quality Of the lamps supplied has, in most cases, been fairly uniform and also above the requirements Of the specifications, so that full and reliable data on the lamps supplied by each manufacturer have been Obtained by submitting to life test a yearly total of not over lamps which represent about one and a quarter millions of inspected lamps. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author : George Wiles Middlekauff,Barry Mulligan,James Franz Skogland
Publisher : Unknown
Page : 26 pages
File Size : 46,9 Mb
Release : 1916
Category : Incandescent lamps
ISBN : OCLC:741963013
Author : Anonim
Publisher : Unknown
Page : 682 pages
File Size : 53,6 Mb
Release : 1916
Category : Science
ISBN : PRNC:32101076186053
Author : United States. Bureau of Standards
Publisher : Unknown
Page : 706 pages
File Size : 53,7 Mb
Release : 1916
Category : Physics
ISBN : UOM:39015067122799
Contains results of investigations, researches, etc., pertaining to scientific, technical and manufacturing interests of the country.
Author : Anonim
Publisher : Unknown
Page : 394 pages
File Size : 49,8 Mb
Release : 1915
Category : Physics
ISBN : UCAL:$B569151
Author : United States. National Bureau of Standards
Publisher : Unknown
Page : 182 pages
File Size : 46,9 Mb
Release : 1916
Category : Weights and measures
ISBN : OSU:32435061416913
Author : United States. Bureau of Standards
Publisher : Unknown
Page : 282 pages
File Size : 46,7 Mb
Release : 1921
Category : Weights and measures
ISBN : MINN:31951D03803618P
Author : United States. Bureau of Standards
Publisher : Unknown
Page : 878 pages
File Size : 41,8 Mb
Release : 1902
Category : Weights and measures
ISBN : UCAL:B3792770
Author : United States. National Bureau of Standards
Publisher : Unknown
Page : 396 pages
File Size : 40,6 Mb
Release : 1948
Category : Government publications
ISBN : UIUC:30112063917774
Author : United States. National Bureau of Standards
Publisher : Unknown
Page : 222 pages
File Size : 46,5 Mb
Release : 1918
Category : Weights and measures
ISBN : OSU:32435061416814
Author : United States. Bureau of Standards
Publisher : Unknown
Page : 24 pages
File Size : 52,8 Mb
Release : 1912
Category : Incandescent lamps
ISBN : UIUC:30112106920751
Author : United States. National Bureau of Standards
Publisher : Unknown
Page : 32 pages
File Size : 52,5 Mb
Release : 1937
Category : Building materials
ISBN : MINN:31951D03547718Y
Author : United States. National Bureau of Standards
Publisher : Unknown
Page : 402 pages
File Size : 47,9 Mb
Release : 1943
Category : Government publications
ISBN : IND:30000090045851
Author : United States. National Bureau of Standards
Publisher : Unknown
Page : 392 pages
File Size : 51,5 Mb
Release : 1966
Category : Government publications
ISBN : COLUMBIA:CU23184965