File:Radiography and the 'X' rays in practice and theory - with constructional manipulatory details (1898) (14777934683).jpg

Identifier: radiographyxrays00bott (find matches)
Title: Radiography and the 'X' rays in practice and theory : with constructional manipulatory details
Year: 1898 (1890s)
Authors: Bottone, Selimo Romeo
Subjects: Electric radiation X-rays X-Rays Radiography
Publisher: London New York : Whittaker & Co.
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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lui. 20.- -Ti;sLA Ti(ansk(»i;mei:. alternations, instead of being clean and sharp, as repre-sented graphically hy/\y^\X\y\y\, partake more ofan undulatory character, as shown CHOICE OF SOURCE OF CJUUENT 01 § 33. There is, however, a niodificatiDn, or, to speakmore exactly, an addition to the ordinary coil, known asthe * Tesla * transformer, which may be used in con-junction with the alternating current dynamo, that givesfairly good results. AVo present illustrations of twoforms of * Tesla apparatus at figs. 1!), 20, and 21. These
Text Appearing After Image:
Fig. 21.- Tesla Transformer. latter are constructed specially to run off the ordinary* alternating street mains. The following instructionsmay be useful to those intending to try this latter formof Tesla as a source of electricity for working the tube.First, the large box containing the Tesla coil must befilled with mineral oil to within ^ in. of the top of thestoneware lining. The whole should then be allowed to 62 liADlOaUAVUY stuMcl for three or four liours, to enable the oil to penetrateand (lisplaee any moisture wliicli may have settled on thewindin;^ ; seeondly, the small hox eontainin;^ the step-uptransformer must also be filled up with the same qualityoil, until it begins to How over the wooden cover underthe primary windinj^; thirdly, to connect up, the streetmains are to be coupled to the terminals on the smaller,or step-up transformer, as follows : for wc^akest power,terminals 1 and 4 ; for intermediate, terminals 2 and 4 ;for stron«;est, terminals W and 4. The terminals 1

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