Word: tungsten
(lookup in dictionary)
(lookup stats)
Dates: during 1910-1919
Sort By: most recent first
(reverse)
...former years, tenants of College dormitories may obtain for use in their own rooms Mazda (tungsten filament) electric light bulbs which take only half the current used by ordinary bulbs and give the same amount of light, at the office of the Inspector of Grounds and Buildings, Massachusetts Hall. 25 and 60 watt bulbs, respectively of 20 and 48 candle power may be obtained for 25 cents each...
Tenants of College dormitories may obtain for use in their own rooms Mazda (tungsten filament) electric light bulbs, which take only half the current used by ordinary bulbs and give the same amount of light, at the office of the Inspector of Grounds and Buildings, Massachusetts Hall. 25, 40 and 60 watts bulbs respectively of 20, 32 and 48 candle power may be had for 25 cents each. Cash payment in all cases...
...closing, Mr. Rhodes mentioned the merits of installing the Tungsten lamps in all subway trains in New York, instead of increasing the size of the copper feeder which would be a very expensive step. A number of these Tungsten lamps have already been tried out, but until they are used throughout, the present trouble will remain. The carbon filaments of the lamps grow dim and almost go out when the train starts, due to the excessive voltage drop in the third rail. The superiority of the Tungsten lamp lies in the fact that its candlepower varies considerably less in proportion...