. X-ray apparatus : complete outfits and accessories for X-ray laboratories . n the drawing board, including rubber hose ^. Foot Bellows Code NEVER e. Swivel Attachment to the tilting table, to fix the same in any angular Code NEFAU THE KNY-SCHEERER COMPANYS LABEL GUARANTEES HIGHEST STANDARD. -AZ— X-RAY APPARATUS—Measuring Devices. 1. Measuring Devices. 1. spark Gap. According to the vacuum of a tube the potential of the electric current necessary toproduce X-rays varies. A soft X-ray tube, for instance, represents a resistance equal toa spark gap of from 2j^to 3%. T
. X-ray apparatus : complete outfits and accessories for X-ray laboratories . n the drawing board, including rubber hose ^. Foot Bellows Code NEVER e. Swivel Attachment to the tilting table, to fix the same in any angular Code NEFAU THE KNY-SCHEERER COMPANYS LABEL GUARANTEES HIGHEST STANDARD. -AZ— X-RAY APPARATUS—Measuring Devices. 1. Measuring Devices. 1. spark Gap. According to the vacuum of a tube the potential of the electric current necessary toproduce X-rays varies. A soft X-ray tube, for instance, represents a resistance equal toa spark gap of from 2j^to 3%. To break the resistance of very hard tubes a potentialequal to that of a spark gap of from 10 to 12 is necessary. The spark gap, therefore, is a convenient, but not very accurate, means for determin-ing the vacuum of a tube and is often used for radio-therapeutic measurements. It servesfurther as a protective device for the tubes against puncturing, when connected in parallelwith the tube. If the latter becomes too hard the discharge will take place across thespark G/..5923 G/..5923 Spark Gap, with scale, consisting of two hard rubber columns, one ofCode NEGHE which carries a metal disk, while the other is provided with a pointedmetal rod; one of the columns slides along the scale. For sparklengths up to 12 $ G/..5924 The same, for spark lengths up to 20 Code NEGIT G/..5925 The same, for spark lengths up to 28 Code NEGLR THE KNY-SCHEERER COMPANYS LABEL GUARANTEES HIGHEST STANDARD. X-RAY APPARATUS—Measuring Devices. 2, Milliamperemeter.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrad, booksubjectxrays
