. Popular electricity magazine in plain English. -ance. As is to be seen, the extension isdesigned on the principle of lazy light can be brought close to the tableor desk or raised up entirely out of theway and no special attention is necessaryto lock it in position. GLARELESS AUTOMOBILELAMP Bleriot, the famous French aviatorand automobile designer, recently said: It is more important to see the ditch at60 feet than the obstacle a mile away. The Roffy lamp here shown is con-structed to illuminate the road near thecar without blinding glare. The lightfrom a tungsten bulb passes throug
. Popular electricity magazine in plain English. -ance. As is to be seen, the extension isdesigned on the principle of lazy light can be brought close to the tableor desk or raised up entirely out of theway and no special attention is necessaryto lock it in position. GLARELESS AUTOMOBILELAMP Bleriot, the famous French aviatorand automobile designer, recently said: It is more important to see the ditch at60 feet than the obstacle a mile away. The Roffy lamp here shown is con-structed to illuminate the road near thecar without blinding glare. The lightfrom a tungsten bulb passes through twocondensing lenses and upon a Frenchmirror, then through a projection lensto the road. The upper ray of the beam never riseshigher than the top of the radiator, orabout 4H feet from the ground, so cannotglare into the faces of oncoming autodrivers or pedestrians. The bottom ofthe lamp is enclosed in a glass tube whichpermits sufficient light to emerge to actas a side signal. Thus, a pair of lamps POPULAR ELECTRICITY and EWORLDS ADVANCE 1327. perform the functions oftwo sidelights and twoheadlights. When the caris left in standing posi-tion, the two globes may be connectedin series and reduce the current con-sumption from four amperes per lamp totwo amperes for the two. This reducesthe light from the lenses but permitssufficient light to act as sidelights. MIDAS MYSTERY PLATFORM The Midas Mystery Platform is one ofthe latest display window advertisingnovelties placed on the market. It con-sists of an ebony case, the top of which isformed by a mirror. On this mirror restsa velvet pad or platform which carriesthe article to be advertised. The platform moves about on top of themirror in a most mysterious fashion,there being apparently no means wherebythis motion could be caused as everypart of the unbroken mirror surface canbe seen at one time or another. In thisway the observers attention is drawndirectly to the article being advertised. How is it done? Frankly, we dontknow, a
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectelectri, bookyear1912
