. X-rays simply explained : a handbook on Röntgen rays in theory and practice . ugh to fusethe platinum and expose the i)onrly ladiating nickel. Fig. 5 is from a ])hptogra])h of a ])latinum anti-cathode which has heen damaged hy excessive heavy work tuhes have heen desiirned with anti-cathodes of solid copper plated with platinum orprovided with means for keeping the back of theanti-cathode continuously cooled by water, l>y air-currents, or by interchangeable cooling tongs. Othersagain are designed with a view to running the anti-cathode normally at red heat. Fig. 6, Plate I., s
. X-rays simply explained : a handbook on Röntgen rays in theory and practice . ugh to fusethe platinum and expose the i)onrly ladiating nickel. Fig. 5 is from a ])hptogra])h of a ])latinum anti-cathode which has heen damaged hy excessive heavy work tuhes have heen desiirned with anti-cathodes of solid copper plated with platinum orprovided with means for keeping the back of theanti-cathode continuously cooled by water, l>y air-currents, or by interchangeable cooling tongs. Othersagain are designed with a view to running the anti-cathode normally at red heat. Fig. 6, Plate I., shows a tube sold ]\IessrsWatson & Son, of Holborn, for heavy-current anti-cathode A is of solid copper plated withplatinum, and supported on a hollow tube T. Bianodal Tubes.—The type of tube known as Rr)NTOE\ KAV TITHES 59 ])ijino(lal, .111 advance on llic nritrinal focus ,is now almost universal. The target which provides the source of the rayshas been consistently named the anti-cathode andnot the anode, because its chief function is to receive. Fig. 5.—Platinum anti-cath(jde of a bianodal tube which has beenfused and perforated by the excessive discharge from a coilactuated by a Wehnelt break. The disc behind is the auxiliaryanode, and the markings to the left are the light-reHections onthe bulb. the cathode stream and convert its energy intoRontgen rays, this function being fultilled regardlessof the position of the anode. In Jacksons focustube and in most other X-ray tubes the anti-cathodeis also the anode, but if an independent anode wereprovided, the anti-cathode being entirely disconnected,the cathode rays would still proceed from the alu- 60 X UAVS SIMIM-Y iiiiiiiuiii (Up, sUiko llu* anli-callnMlt. and ^iitiatcKtuit^ni niys at tlu»ir ]M)int of impact. Now if theliitluMlo in«l(p(ii(ltii( aiiodr Itc (muiih*c(,«*(1 cxtcniallyto iUi*. ailti-cal litdc, tin lallcr a;jaiii iMMninrs ananode, hut tlic tul*o l>e(-onu\s hianodal and all
Size: 1569px × 1593px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidxrayssimplye, bookyear1904
