PICTURES BY WIRE.

Dominion, Volume 2, Issue 544, 26 June 1909, Page 5

PICTURES BY WIRE.

'LATEST MARVELS. ; ; LIGHT AND COLOUR TRANSMITTED. :;/ .DANISH INVENTORS. (By ■ Tolegraph.-Prcss, ABsociation.-CopyrlghU, ■ ; r . LondoniJurio 24. ■■ Exportsj:speak -woll of '.an '.invention'-. by. tho Anderson, of Copenhagen, for the... .'transmission of light and colour, > by means of which: a telephonist is visible from the other end of, tho wiro, and is'.• able to show.-anything he likes across the-wires; .'■ {PJCTURE-TR.'.Ns'MISSION . DESCRIBED. V inithe "Daily Mail" of. May II, :: Mr.J T. -Thorne'.ißaker describes graphically the! latest ; workin' picture-transmission telautography;.. ■":.:/,/.:■;■■./'■.',.;-.. .;,;-•;;,.;..,;: •;. ';■■. ;. " relegraphy' and telephony," ho . writes,': "are constantly advancing,'. though to - those' not ■ ac-., tually; acquainted with the subjeot r .the : progress mayjseeni trifling .and' even 'insignificant, fhe-'wmng'.; of' ■ pictures..- and 'photographs,'! 'Which* to the lay. mind seems more .wonderful than '.the telegraph and telephone, has : 'eonio' 'much later,: but.it has come to stay,-and the development of this now electrical ■ science has been jh ; reality'.' very ..rapid;: ;. .-';'. ■ ':' '• First Photograph' Wired. ;' ■ r i ;_ ; ."lt.' ! isi'-6ver'. eighteen', months ago that' the first; photograph ; was", wired from ' Berlin to Paris, by -..means of tho..instruments, invented by Professor. 'Korn, of..Munich, and a . few days later .a: telographed.portrait of- King EdWard ;■■•., was. received from, Paris'' in,- London. 1 Following .that event''a'regular-'communication'- 1 was. kept,up "between Paris 'and Loudon,' and the.-British public becaiiie'tii'iite familiar'with iho characteristic photu-tolegraphio portraits.' -:' V ."The. necessity, :: for sending a very .simple subject,,;such as -u .portrait was, .however, a serious-hindrance; to the.: system, ahd"the "deyelopmohtrpf Professor >Korn's' telautcgrnph— an ' lM.truiueht V. for .;'.'■ telegraphing, complicated subjects' - such, -as daii'dscapes, e to.—was eagerly ■awaited;; 1 "v-r. ,;; V:1 :;■ \- '■..';-..■-".-'..'',''■...■, ■■ ,v.' :■':'■■■:.':■'.■,'.■. v' "It -"is /the now at work with suoh success, and" although: there; are many.) defects to beyetoveroome, the new:system is ' that wo ■may,;'now, confidently look .forward ; to' genuine :and.rapid progress; :: : .-f : ':: l :'-v^' ! ,'---.....• -: ■"The working '-"of -tho' transmits': picture's '' by wire'-is' exceedingly simple and straightforward—it'is. the delicacy, of ad-, justmont required'that. deniands.sO: much care -ejid:- ; atte'ntion;<j-;;;' ,-->iV>;^: ; h"(..-■•;...,-;);-v : ■':■■',■■'■ '-■'-, Apparatuvand, Methods.^,.;'■;■: ;..;■■• '."::■■!.:■ ~; : "Imagine 'a; photograph broken up, into'liries' of,;varying; thickness; ~sb. .that ''several' thick' parallel'lines-foriii-a"dark portion, Awhile thin lines; for the light; portions,'- the -various' 'tones'. : being-dopende'nt;on.;tho ■ thickness■ of-' the \ com-' pbneht;liiie3.' : . ; N6w.iit::is,ypOssrble-to'print: such ■a ''photograph:or picture upon;o, thin -Sheet of copper,:;, the: lines .consisting -of gum ;oy,glue; Such; a v'picture' is .'; attached, to '.a'iiiot'al ,: cylindqrj'which.!..rovolves:;in /spiral'fashion in "the 'instrument;"just like' .a 'phonograph,'record.'.' .' ■v "A j'sinail .metal neodfe'.'or, stylo presses on ;the cylinder,.andvthus opmes' into' 1 contact ;\Hth each;tiny seotion;vone .by one,' as ithe-picturo revolves :ahd'- ; .travels , forwards, beneath at.-':-,',-.

.' Is 'led through the byliri,der;.■ via :th6'/iice<ilo, : . iiito .the,telegraph) ii»k>s .conncctirig) ; tbo transmitter .with the), receiving apparatusir-'V-Tlio'':' passage, of 'the current)) is ■intercepted'.;by" : the ;gjihi' linos-,-.' for periods.'de-pending-.oa'i'Hhiir.;-thickiiesses, ; aud ' thus::the. flow-of'the' electricity).is constantly being iri'tetrupted.<,v',; 'Yj a ;;)v::yj:-.;.';/<' '.;•:•'■; r 'i--';->•?.'"■-. f '■'•• i .."How., is;' this, interrupted/ current :niado",. to repr'oduoe; a,picture, at the [other ..end-of/ the line?', .'Once.-again; r tho';system- is \ remarkably, /.v:/V.-: } ) '.■i.. : ,;'-v ; y///;-.;/'-.";.'■'*••/ Ah? Elecirlc,iSHutter;V\";;• '^"f ///\'''' £' ■'"'//) ,':i."A.-powerful. beam'■'.of .light from : :&;'limip is concentrated Voii;'a ?,siUall L . 6pot ; )6f'?a '.sensitive, that'revolvos'Spirally in a dark.hox'in eiaotly; the): tatho!;hiimrier' ' and. .'at;,' tho' : same); rate.) as, the:trahsiriitting'bylindo'r.'!.''; •'-;>; ■",.'::);;k: "'■>':, ■;:."A; sujall'j^lec.trip^^uttj^.yis^glaced ; ,in : tho ■p.att^Vthe>]ipKr,j^6;;ant^cepts"',it''!w.V ; 'tha^^.it i cannot preach time: the metal '■; neeale':'[is''Sih'- con'&cK.^tV^tuo 1 .. copper :pioturc,'and(iiot' ; scparated frOhi'itby'one of, ■the'gum-lines—the-shutter.risos/and allows the 'light?tO.<.pasi[!7;;-,';'.:.\-..,';;':,,'.)•';;' ■■:{■>:;•< --,-j-".t^/'."-.";>•-.*' ,' : ."..".Theis •• intermittent':;e'xpostfi-est ; 'depend • > for their.;duration' ! upbh <tho width 'of the ■ gum ■ lines in'Sthej .picture)' [being "telegraphed;/-'and : hence' on -developing ; tbe )film'(a; jeprbduction/of '■ 'thepioture.i is obtained. Vp'''') "):•)-; •;';);;' ").'::' '.•').(■

Extreme Minuteness. "It is when We learn that the electric shut tcr is onlj about a two-thou->andth of an inch in size and is attached to silver wires a thou sanclth of an inch in thickness that no begin to realise what dohcacj is required in the carry in? out of the work This minute shut ter moves between the polos of powerful electromagnet. > ' Tho amount of eleotno current employed is less than tho hundredth part of that required to light on ordinary eight candle-power lamp, yot it has to perform ita work and build up a picture perhaps o. thousand' miles away. "Tho T)aily Mirror' (Itonohester) Tcoemo a telautograph picture from Pans every evening, and has now installed on instrument at Manchester, from which late news pictures are bang wired to London for publication in the next morning's paper. The time of transmission is only six or seven minutes. "A 6plendid example of the possibilities of the telautograph was furnished recently by the transmission of a picture of tho finish of the Grand National race; this photograph was taken from tho racecourse by special inotorI car to Liverpool, 'rushed' thence by train to I Manchester, quickly converted into a line pic- , turo, and telegraphed to London, where it was received many hours before th first phntograph.arriyed'jin :Loudon■;'.by train. ..v.... :-..-. the }chief, : cities, in 'Europe,' and ...the -.English hbwspaper-rcading ' public, 'will.be.renableU ", to keep in ;- ! touc,li;;with.the'Customs .and incidents of•■■:neighbouring'-,countriesi;"- ! and,[.we.;shall bo able;toseeds'.well,as-read of .the 'doings; of other'nations simultaneously.'':-->r.v-' 1 -'' ".,--,• '/.-;