Show cheap filament lamps lampe the german general electric electric kocl ety now manufactures metallic filament lamps to be run sit it the low tension of 14 volts giving of I 1 10 16 and 25 26 candle power they cost about half the price of metallic filament lamps made tor tensions of and volts bolts and are said to be very durable their all alimentation Is IB reil rendered dered possible by means of transformers which reduce the tension with high tension the hive have to be long and thin ahn but those used with low tension are aral shorter thicker and cheaper it Is asserted that the light yield of a lamp is increased when used at low tension |