. Popular electricity magazine in plain English. ed during years of re-search. At first, these lamps had avacuum of about a hundred-thou-sandth of an atmosphere pressure. Thekinds of residual gases were carefullystudied, together with their effect uponthe lamp itself. This work is too com-plex to warrant recording here. Vacua were produced and with themalso the gauges to measure the pres-sure, down to the hundred-millionth ofan atmosphere. From the purely physi-cal point of view, such a vacuum is stillteeming with countless molecules ofgas, but for the most of the work onincandescent lamps thi
. Popular electricity magazine in plain English. ed during years of re-search. At first, these lamps had avacuum of about a hundred-thou-sandth of an atmosphere pressure. Thekinds of residual gases were carefullystudied, together with their effect uponthe lamp itself. This work is too com-plex to warrant recording here. Vacua were produced and with themalso the gauges to measure the pres-sure, down to the hundred-millionth ofan atmosphere. From the purely physi-cal point of view, such a vacuum is stillteeming with countless molecules ofgas, but for the most of the work onincandescent lamps this concentrationis not very important. Pioneer engineering or physical re-search is just like other pioneer work,with its explorations and see a quiet, unassuming, patient manstanding before a complicated mass of glass piping and connected bulbs, withmercury gas traps and electric heaters,and with liquid air boiling and makingfrost in the room about a part of theapparatus. He is gently kicking asmall lever with one foot, while with. The Most Efficient Electric Incandescent Lamp in the World the squint of a sharpshooter he sightsacross the mercury level in a McLeodvacuum gauge. 1360 Popular Electricity and the Worlds Advance 1361 I happen to know that he has heendoing this very thing, on this identicalspot of the laboratory, for hours, fordays, and for years. He began thatexperiment many years ago. It is stillunder way. Dont ask us to tell allabout it. Much of his collected datawill never be read again, though it fillsvolumes of reports. Some of it hasfilled the long felt want. Some of itstarted other lines of exploration andsome of it could not be understoodat all. Let us draw just a little closer to thebig littleness of that one apparatus with which he works
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectelectri, bookyear1912
