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Extra resources for AWWA standard for swing-check valves for waterworks service, 2 in. through 24 in. NPS

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Fuchs and H. London, who were then fellow refugees in Bristol, in correcting the proofs. J. 1007/978-3-319-14851-9_4 39 40 Fig. 1 From Metals to Dielectrics: First Theory of Dielectric Breakdown 41 systematic discussion, in Chap. 7, of the different types of metals—monovalent, divalent and transition—and referred to the then recent work of H. Jones on bismuth. Indeed, it was from a diagram on page 320 of that chapter, showing that a diagonal through the Periodic Table of the Elements separates metals from insulators, that Lark-Horowitz was later led to adopt germanium as the ‘best’ semiconductor.

12 2 Early Life in Germany Fig. 2 Entrance to University and Early Academic Career in Germany 13 What was so impressive was not only his evident awareness, already at this early stage in his research career, of such a sophisticated and highly advanced technique of quantum field theory, but also his courage to be the first to apply it to a problem in solid-state physics. It was to be almost another 20 years, however, before Fröhlich fully realised the potential and utility of this technique in the solution of non-relativistic many-body problems (vide Chap.

Reproduced with the permission of the Cambridge Philosophical Society 34 3 Moving on: The Years of Exile himself. Tyndall agreed, and having financed his own travel from the money raised in Vienna, Fröhlich arrived in England on 30 June 1935, when he was granted a Visitor Permit valid for one month. The person Fröhlich helped in Vienna was Hermann Mark,7 who had been Professor of Physical Chemistry at the University of Vienna since 1932. In a letter to Max Born in Cambridge, dated 17 June 1935, Mark records that he had had several discussions with Fröhlich, which he (Mark) had found ‘instructive and helpful’, and that together they had come to the view that it could be of interest to set up experiments to study the dependence of the electrical and optical properties of metals on crystal size; Fröhlich later pursued this theoretically, in the context of the electronic specific heat, during his 6 months stay in Leiden in 1937 (vide infra).

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AWWA standard for swing-check valves for waterworks service, 2 in. through 24 in. NPS by American Water Works Association.; American National Standards Institute


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