A Review of Railways and Railway Legislation at Home and Abroad
Author: Samuel Shaen
Publisher:
Published: 1847
Total Pages: 738
ISBN-13:
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Author: Samuel Shaen
Publisher:
Published: 1847
Total Pages: 738
ISBN-13:
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Publisher:
Published: 1899
Total Pages: 396
ISBN-13:
DOWNLOAD EBOOKAuthor: International Railway Congress Association
Publisher:
Published: 1897
Total Pages: 1836
ISBN-13:
DOWNLOAD EBOOKAuthor: Turner
Publisher: Oxford University Press
Published: 2022-02-02
Total Pages: 777
ISBN-13: 0198863918
DOWNLOAD EBOOKA General History of Horology describes instruments used for the finding and measurement of time from Antiquity to the 21st century. In geographical scope it ranges from East Asia to the Americas. The instruments described are set in their technical and social contexts, and there is also discussion of the literature, the historiography and the collecting of the subject. The book features the use of case studies to represent larger topics that cannot be completely covered in a single book. The international body of authors have endeavoured to offer a fully world-wide survey accessible to students, historians, collectors, and the general reader, based on a firm understanding of the technical basis of the subject. At the same time as the work offers a synthesis of current knowledge of the subject, it also incorporates the results of some fundamamental, new and original research.
Author: Association of American Railroads
Publisher:
Published: 1942
Total Pages: 252
ISBN-13:
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Publisher:
Published: 1918
Total Pages: 730
ISBN-13:
DOWNLOAD EBOOKAuthor: A Jones
Publisher: CRC Press
Published: 2000-01-01
Total Pages: 203
ISBN-13: 1420033492
DOWNLOAD EBOOKUntil the 1950s timekeeping was based on the apparent motion of the Sun that in turn reflected the rotation of the Earth on its axis. But the Earth does not turn smoothly. By the 1940s it was clear that the length of the day fluctuated unpredictably and with it the length of the second. Astronomers wanted to redefine the second in terms of the moti