| Show MAKING I A WITHOUT HEAT The mot most wasteful tIme the least leant of all widely tiled need electrical devices I is III the this lamp of till nil the thi power sod j the glowing filament In iii 11 the th bulb more than ilium 07 01 par ler o nt Is I I absolutely wasted waste scarcely throe three per cent appearing III In light This three per cent of ot time the Incandescent mUll lamp compares ery iery with the 49 II O Pet per cent of or time tho gasoline engine the 22 12 i er tent lent of ot the marine engine stud and time the 90 00 O ir cent of the d dynamo numo The rhe waste of cut power In time the th Incan Incandescent descent lump lamp I Is known knon to bo ho duo lIuo largely lar el to the conversion of n consid considerable erable part nf ot the electricity used Into useless u heat hoa t It wits therefore necessary to produce a 11 cool light that Ix is n it light JI ht In the energy ivits converted wholly or largely Into light rays ra II and not no Into heat rays MII Mr Ir Cooper Coop r Hewitt hla his atten attention tion to the tue Why could not some lome Incandescent gas as he bf made male to yield the much desired light without heat This wn WR the term germ of hi hl his Idea hulea lIe He took look up experiments with mer met mercury mercur curs cury cur confined In Iii a tube from which the theair theair theair air had hili h elt exhausted I He lie discovered dl that when once tle high resistance of time the cold mercury was wa overcome It a very YOI lees pow paw powerful erful current found ready passage and produced a R very el brilliant light The Thelow glow low of the mercury vapor or TItle ThU Mr Ir Hewitt says Rays IIa M was tIme the crucial point the genesis of his hll three for fur all of them theta are applications application of ot the tIme mer mercury mercury cury eury arc Ray Stannard linker Haker In InJune June Jutie McClure McClureg |
