ANOTHER WONDER.

Dominion, Volume 3, Issue 725, 26 January 1910, Page 4

ANOTHER WONDER.

TELEPHONING WITHOT7T WIRES,; "At the'■ Morton' Hotel,'- Russell: ■ London; o£ the _, mostKH' . markable facts "-tho"; ago.' was .showii,'.' .sliysjihe ;.' ; Westinihster';Gazetto." -■■'It/ig',./,;.'; possible,with- ; portable . apparatus, : to, ; establish: wireless telephonic, communica-y,;v : : ; Hon, between!'.two' points. . Tho transmitter. ! - ivas placed;in*.ono'-:i'ooin, .the receiver'm another, - separated'. from ' tho ,' former by ", tiro i stoutly-built : waUsjVon 'one ofwliich/',/ ,i; hung:a heavy.mirror; .and.messages.wefo . sent and J heard ■ with all clearness, --j "/ "It ;is: stated -by, the .in\'cntor,Mr. Hi '■ '5 Grinndell : Matthews—whose. ndmd sis iial-' 1 : , ready ,-knbwii? to • electrical engineers, 'ia parfacilar'. iii!!coniiection vwitli. ah'-electri-' / caUy. controlled torpedo . which ho de-> • ' signed—that 'messages have been, sent and.-'' - received .oyoi'.;liis; apparatus, in'" London: through a ;distance:.of' half, 'a 'mile, i:and. 1 that in: :tho: | :country, . ; whero thero are' . practically, no noises: to: confuseT the vocal 1 -■; .vibrations,'., ihe'ssages/havo; passed through ;' ■ a , distance' of/ seven and' a quarter miles," . ''.The; system, noedsj-hcithcr i'earth', Dor. ; v :. 'antiniiao? (thd;'poleYfrom' whicli' depend.'/.'- ' the wires used " for catching Herzian,.',' : waves); .transmitter;and receiver,' needi'nff;?' : ■ little electrical , energy-' to ' oporato: theini '.' V are ; of -little weight ;-, and,- it .is /claimed,. the,/direction ofthe waves.- is. controlled.. : : .v-/ The Mast'; matter /j.s,v.bf ', course/-:'of'■ great V v importance.;in ' warfare,- as. thereby:', the /■'!. ? qhances of! messages being receivedifiy . tlia enemy! would.; bo-considerably .reduced. / In time, .'even : motor-cars may.' carry instal- i y . .lations,-. and,- tho riders ,; therein: bo/ ablo :': .'sl to converse..,:; It is impossible' to^deseribo 1 ':: • . the ap^arahis;,the details,.have:been kopfc''/ 'scbret' in possibility/ of. pur*'. c ,-. chase by a Government. .. j'. . ■ .[. "All that>'one,sees, .at the.. transmitter.' . end of tho "sj'stoni—it was' impossible converse yesterday,, there being only ;a. /'. transmitter at one end and only,a . ro^.;.; .'' eeiver at. the. others-is a' box; (contaihingv-.-an accumulator, coil, etc.), an. ordinarytelephonemouthpiece,: and a. 'kind',->'bf;• \v* drum 'threo :feet:,in diameter,- but only';! ;:. four, inches'deep,. theso:,being 'coupled'up-'/.: by! wires.; 'At, the':,receiver; end thero: is a similar "drum aud boxj and an ordinary 1/.: ■>- car-piece; but tliere is also a device which - intensifies tho - waves., as' - they;; aro.: pass-* : - iiig .ffliis;device intensifies, some'. twenty/ times.. • : v;.::v'-v ; .'.'On.thb wooden baso on which it stands, •was .placed ai;.watcli i ! of',this the ticking' •. .was .inaudibjot/'ct : a distance of a couple - of .fceb v the air- being,-the^medium; ; but'■ through: the':'car-piece .tho tick/sounded" :.' as lOudly .'as does:;that ■of tho ordinary. • grandfather's clock!. ' . . , :"./' ; "Mr. 1 - Matthews has been experimenting in. aero-telephony for. iiine yoars, and lias ' spent in conducting'thcse experiments bi.v' tween six .and seven / pounds;. When 110 ilias perfected the /apparatus'/it' : should'certainly .be of- value commer;'",: /-. eially. " I'or it will./•' differ . from. v thb , "ordinary, telephone, in -: that: thero'' is iio. j /:/ ' trouble of; ringing up ■' an. dxchange, .' and"'" : - ; privato; matters canv.be discussed without ./ any • chance of the conversation being: ' overheard.'; The aerophones: can bo ma'dn : -' so that, only. a couple avo alike and 5 capable of ;.mterchhnipng! 'messages—this,' ,:/,.'.' ofcourse,:. in: the case/' of ■ 'nrivato 1 nerc-'• -: , . tliG, ; iiLvt?;ntor. V-ls:: (oiifident . that;,he:can make' a nest. tas it were) l .;bf ; '-: : ' ■, fouiy/auy.':.ond of which .would .communi-'v/ /' /: catd witli any of the other three. • .. '. ,

' ,<"Tlio: most important r point of ;■ ttc * in-;; veution is, .however, tho "ease ivitli whichi .the; •apparatus'- can ,bo moved '"from -nlaco to place aiul tho twin,. also-having, been -, moved,.locatcd.'.' y •/ i■.