Show I RARE METAL THAT HAS REVOLUTIONIZED ELEC ELECTRIC t TRIG h I IOno Ono October night in n the year 11 1781 while cannon Were de the tho surrender ot of i r rat I at Yorktown l a Gorman German scientist j working In hi his little to th T I light from tallow candles discovered t I Ia a now new and most unusual metal which r I Iho ho found Impossible to melt In his 1 crude charcoal furnace Ho He 4 caled the ne new metal mel tungsten from the tiit J Swedish tung heavy and be bestone te r stone h the tho heavy heavy ore orM J como come from Sweden Sveden Litte Little did the tho old I man ns as ho he worked away by J candlelight ht to give Ivo hi Ills dIscovery to I 1 the worle that his find would semo lay day a hundred and ye years later completely revolutionize electric lighting yearn ago Thom Thomas A Elison Edison produced the first incandescent electric lamp af after or other Inventor Inventors had had worked for tor nearly fifty years ears to the tho The Tho fa lila menta for first lamps lampa Were mae made ot of carbonized strips ot of bamboo heated white hot In I a vacuum globe by electricity After 18 1834 4 carbonize 1 cotton cellulose Wl was used for the Ills ment ments antS It seemed as though the tho 1 lamp had surel surely reached perfection The Tho ot of incandescent ele sloe Inc lamps were made ot of carbon be because 1 cause 10 other material could b 0 found which would withstand the In tense heat Evor Evet metal WI was tried but meled melted before reaching I Ithe the tho required temperatures Then the Inventor Inventors began began to experiment with the more uncommon metals and agin again a German scientist tool took up the stud study of tungsten At host tile the great trouble was to secure pr pure tungsten T This difficulty was wih with the aid or of an sloe elec electric furnace hut but the product In the form ot of a gay gray powder proy ed cd so refractory that it could not net be meled melted Into Ingots or drawn out into wire An n experimental flament filament was wa made b by mixing the tho fine powder with witha a pate paste and squirtIng the mixture through a die dlo much the samp a an a er spins Is Its web This thred thread was as In turn heated In tn an electric fur mice naco until the powder wa was fused Into tho Cor form of oC a fine wire With the o melting point ot of tungsten so much higher than any other kown known metal It was possible to hea heat the tho filament to greater incandescence producing more mere t tand and better Ight light with le less wate waste ot of current in heat hoat Then Thon the tho Inventors awoke to the 1110 fact that the ver very substance they thoy were nl that which Edion Edison hud had soured scoured tho world to fd find 13 lay under their hand al all the UrI time and tungsten useless ad and practically Ul urn known for tor over a century came Into Its own and began the tho Wonderful tk task of revolutionizing incandescent elec electric lighting The Tho advent ot of the tho new tungsten tamp wa was startling to the tho users usen o of electricity lor or lighting purposes for tor the they sw saw at once that the new laP lamps would easily give the samo Ig t a as the tho common incandescent lamps for tor torone one third the cost A home that was a lighted by electricity for a month cooLS be lighted wih with the nw new lamps for cent cents Not only that but the Ight light from the tho new tungsten lamps provet proved to be pure vcr very nearly akin to actual sun shino s soft pleasing and Oe to 10 tho eyes and not ot of a yellow cat cast Iko like the common Incandescent lamps lamps Te The now new tungsten lamps wi will rs re replace place Ice those now In use without s spa fixtures In Cat fact any sixteen c can incandescent lamp cn can 0 be replaced replaced wih with a candle candlepower power tungsten which wi will ge give twice the tho light and save savo twenty per cant nt or of ortho the tho cost cost The Tho new lamps are the same as the old In size shape and general appearance tile the difference being In Inthe Inthe the filament within the glass laE bulb The General Electric company has recently developed special chIt cial lamps processes for Cor making tungsten |