Download or read book Investigations on the Platinum Metals Vol 7 written by William Frederick Meggers and published by Forgotten Books. This book was released on 2018-03-23 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Investigations on the Platinum Metals, Vol. 7: Arc Spectra of the Platinum Metals (4500a to 9000a) Only three earlier investigations on the arc spectra of the platinum metals permit of a comparison of values with those given here. The first was by Professor Kayser, 3 who, in 1896, carefully measured the spectra throughout the range of wave lengths from ultra-violet to yellow. The second was by Eder and Valenta, 4 who, in 1910, extended Kayser's tables to the orange and red, but recorded only the stronger lines. The third was by Exner and Haschek, 5 who, in 1911 published their extensive observations on The Spectra of Elements at Normal Pressure. In this case, too, the data are incomplete, especially for the longer waves in the visible spectrum. In all three cases the wave-length values were based On the Rowland scale. With one exception; referred to below in the discussion on platinum, up to the present time no values for the arc spectra of the platinum metals have been determined relative to the new system of international standards adopted since 1910. 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.
Download or read book Investigations on the Platinum Metals written by William Frederick Meggers and published by . This book was released on 1925 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigations on the Platinum Metals Vii Arc Spectra of the Platinum Metals written by W. F. Meggers and published by BiblioGov. This book was released on 2013-07 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1901 the National Bureau of Standards (NBS) was founded to provide standard weights and measures and to be the national physical laboratory for the United States of America. The NBS conducted a lot of research in the fields of science and technology which were reported as "Scientific Papers." In 1988 the NBS became what we know now; the National Institute of Standards and Technology (NIST). This is one of those documents written by employees of the NBS.
Download or read book Investigations on the Platinum Metals VII Arc Spectra of the Platinum Metals 4500 A to 9008 A by W F Meggers written by William F. Meggers and published by . This book was released on 1925 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigations on the Platinum Metals 4 Determination of Iridium in Platinum Alloys by the Method of Fusion With Lead written by United States. Bureau of Standards and published by . This book was released on with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of the Platinum Metals written by Raleigh Gilchrist and published by Forgotten Books. This book was released on 2017-11-17 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Investigation of the Platinum Metals: IV. Determination of Iridium in Platinum Alloys by the Method of Fusion With Lead The determination of iridium in platinum alloys by the method Of fusion with lead was devised by Deville and Stas 2 about 50 years ago. Since that time no critical investigation Of the method has been made to determine its reliability and accuracy. This method is the one most commonly used for the determination of iridium. As iridium alloys are now widely used commercially, it is im portant that a precise and dependable method for the analytical determination Of iridium be known. Consequently, a critical study Of the Deville and Stas method was undertaken at the Eu reau Of Standards as the first of a series Of investigations into the analytical methods for the metals Of the platinum group. The range per cent to 20 per cent was chosen for investigation. The lower limit represents platinum of commercial purity, while alloys containing a proportion Of iridium greater than 20 per cent are seldom used commercially. 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.
Download or read book Investigations on the Platinum Metals written by Raleigh Gilchrist and published by . This book was released on 1924 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pt Platinum written by Gary J.K. Acres and published by Springer. This book was released on 1985-12-30 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: Like most supplement volumes of the platinum-group metal series,Platinum Suppl. Vol. A 1 has been written by an international team of specialists. It comprises technological data of all six platinum-group metals and their technically relevant alloys and compounds. The volume starts with a review on the recovery of the platinum-group metals (23 pages); the next 42 pages are devoted to processes for separating and refining the PGM in order to obtain metals of high purity. The electrodeposition of the PGM and their alloys is treated on 26 pages.The by far most extensive section deals with PGMand their alloys and compounds in catalysis. After a historicalsurvey and alist of important reviewson PGMcatalysis,the catalytic properties of the metals are treated in a general way, followed by unsupported metals and alloys including preparation of catalysts and their reactions in various industrial processes. The role of supported metals and alloys is described in asimilar manner. This isfollowed byan extensive description of the preparation and the reactions of PGM compounds with various nonmetals and their catalytically active role in a number of industrial processes (226 pages). The last chapter (21 pages) is a compilation of data on the medical use of cytostatic platinum compounds. Gelnhausen, December 1985 Kurt Swars IX Table of Contents Page Technology ofthe Platinum-Group Metals. ............................... 1 1 Review on the Recovery ofthe Platinum-Group Metals . 1.1 Historical Perspective , , , . Period of Discovery, 1750 to 1820 , , . First Industrial Period 1820 to 1900 , , , .
Download or read book Some Investigations Regarding the Assay of the Metals of the Platinum Group written by John R. Marston and published by . This book was released on 1904 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigations Regarding the Assay of Platinum Containing the Precious Metals written by Harold B. Litchman and published by . This book was released on 1903 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Collected Researches written by National Physical Laboratory (Great Britain) and published by . This book was released on 1914 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Collected Researches written by and published by . This book was released on 1914 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Metal Industry and the Iron Foundry written by and published by . This book was released on 1923 with total page 1204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of the Platinum Metals written by R. Gilchrist and published by BiblioGov. This book was released on 2013-07 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1901 the National Bureau of Standards (NBS) was founded to provide standard weights and measures and to be the national physical laboratory for the United States of America. The NBS conducted a lot of research in the fields of science and technology which were reported as "Scientific Papers." In 1988 the NBS became what we know now; the National Institute of Standards and Technology (NIST). This is one of those documents written by employees of the NBS.
Download or read book Collected Researches written by National Physical Laboratory (Great Britain) and published by . This book was released on 1913 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Researches on the Platinum Metals written by Wolcott Gibbs and published by . This book was released on 1861 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bureau of Standards Journal of Research written by United States. Bureau of Standards and published by . This book was released on 1934 with total page 926 pages. Available in PDF, EPUB and Kindle. Book excerpt:
