Editorial: Mr. Tesla On X-Ray Burns

Wednesday, May 12, 1897
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504 THE ELECTRICAL ENGINEER. [Vol.XXIll. No. 471. THE ELECTRICAL ENGINEER [n|uonronrn1>.] PUBLISHED EVERY WEDNESDAY NEW ADDRESS: ` |20 LIBERTY STREET, NEW YORK. Telephone: |313 Cortllndt. Cuble Address; LENGINBER. r. Comnnronn num /nm mum Wrrznn, salmon. A. o. sslw. sesy. und ransom! nsmgsl-_ Wlsrlnl Orrlnl - - - 1584 Mouldnncl Block. Ulllnlgo, Ill. Pnrmnznvms Urrrors ----- no neu Bonding. Terms of Subscription Unltsrl States, Cunndl and Mexico - - - - - per yslr. |3.0(| Four or more copies in Clubs (unch) _ _ _ _ - -' 2.50 or-ssc sl-mm und num- For-sign countrlen wnmn uw Pom: Union ~< 5.00 Single cams. . _ - _ - - ---- ~ -10 [emma sl m.m¢L¢mn males- al un Nw York Pm: owe. April v, lass.) VOL. XXIII. NEW YORK, MAY 12,1591 NO. 471. MR. TESLA ON X-RAY BURNS. IT may be considered n rule ot nutnre that every lwntwlcont xnnnlfestntlnn of force may be acconlpnnied by deleterious effects unless guarded ngnlnst by suitable pre<~n\|tlons, mul the Riintgen my ls no exreptlon to the rule, The very onrlh-st experhnenters ln thls Hold noted xt lmrmfnl notion of the rnys on the skln, but of lnte lnstanees hnvo ln\n~n 1'opor\<°d of sv- rlous lnjnry dun to so-enllvcl X-rny burns. lt ls prolnxlulo thul, the eases mentioned ure slne more tn llegleut or hnpropvr treatment of the lnjnry than to the orlglnal effect of the “hurn;" nevertheless, lt ls ennlnently desirable tlmt all pos- sible means be nzloptecl for the prevention of the injury to be- gln wlth, on the old prlnclple that nn onnre of prevention is better than a pound of cure. Mr. Nikola Tesla has doubtless (lone us much X-roy work as any one, und \vlth npparzltns whose sheer power hns prolmbly not he(-n exceellexl hy that nf any worker In this flvlml nncl |l\Vl\l'lI\llly \vilhonl h:\r|nf\|I results, when rn-rtxxln prl-cnntlons \vl-ro taken. Tln- mvaxns olnployed wlth such good results, and their raison <]'0tre, are descrlbell In an interesting eolnnlnnicntion appearing ln o\u' contemporary, The Electrical Review. For the prevention of X~rny burns Mr. Tesla Ilnrls that :1 chief precautlon ls to lnterpose between the hnlh and the per- son n thln sheet of nlnmlnum or ulnmlnnm wire gauze, con~ nected to the ground directly or through n condenser, This screen, according to Mr. Tesla, prevents the formation nf nleetro»stntlc streamers. \vhir~h would otherwlso issue from the bnlly, null whlrh have nn irritating elfvrl. In the vonrso of hls experiments, Mr. Tesln observeml. l\o\\‘r‘ver,' that the injurious effects mlld not seem to rllminlsh grraulnnlly with thc- dlstnnce from the termlnal, but ceased abruptly. I-Ie ae- Connts for this as llne to the effeel' of the ozone geln-rzxll-cl. and supports this view by the fact thnl the gr-nurntion of ozone oenses at :L deflnlto distance from the terminal. But perhaps the most striking fxlet (levelo|n~

May12,1s97] THE ELECTRI minum electrodes. ln support of which assertion he cltes tt number of experiments. To sum up, Mr. Tesln advises: 1. The ubandonments ot bulbs containing platinum. 2. The substitution for them ot a prop- erly constructed Lenard tube, containing pure aluminum only. 3, 'I`he use of u protectlng aluminum screen, as indicated above, or, Instead of this, s. wet cloth or n layer of tiuld. 4. Exposure at no less distance than 14 inches, and preferably to expose longer at s, greater distance. As regards other physiological influences at the X~ray, Mr. Tesla records the tact tlmt since he has begun to work with the X-rays his health has been Improved und he lms been entirely relieved of a troublesome cough; this some effect was observed on un- other person. He lms also observed that when the bend ls brought close to lt powerful tube the effect is slmllar to tlmt produced when wo|‘king for some time with ix noisy air gill). As the X-rny tube gives forth no sound, Mr. Tesln concludes that the tube produces vlulcnt explosions and cuncnsslons, \vhich, though they nre Inaudlble, have some effect on the bony structure of the heud. Thelr innudibility, he explains on the ussumptlou that not nlr, but some flner medium, ls non- :-crmerl in their propagation. In conclusion, it muy be stated that Mr. Tc-shi sllll adheres to his ofbexpressed opinion, that thu X-ruy lube when ln netlun emlls u stream of smnll ma- terlnl purtlcles. Some of his experiments would seem to lmll- cute thul these particles start from the outer wall ut the tube; others again seem to prove that there ls an actual penetration of the wall, and, ln the case of u thin aluminum window, Mr. Tcsln has not the least doubt that some of the finely dlslnte~ grated cathodie mutter ls actually forced through. Mr. Tesla stands practlcully alone in his advocacy of the corpuscular theory of the Riintgen rays, but his faith In its correctness seems to be growing stronger as time passes and lils experl- ments multiply.