What people are saying - Write a review
We haven't found any reviews in the usual places.
Other editions - View all
Electric Lighting: Its State and Progress, and Its Probable Influence Upon ...
John T Sprague
No preview available - 2015
300 candles 40 yards absolute barrier advantage alternating current batteries burn burnt carbon points Carcel lamp CHARING CROSS colour compared conductor consumption of gas convert cost courtyard diminish direct combustion doubt Edison effect electric arc electric candle electric current electric light electric science employed examining the light fact flame form of gas GALVANOMETER gas burners gas companies gas engines GAS INTERESTS gas lights gas shares give a light give the light globes Gramme machine heat of coal horse-power illuminating area increase instruments intense temperature Jablohkoff candle lamps are placed light consumes light equal light the gas London Lontin Lontin's system Louvre mechanical energy naked lights number of electric ordinary gas Paris point of combustion powerful lights practical purposes quantity of light regulator resistance say 10 candles second machine separate light simply special appliance square inch standard candles steam engine timid shareholder value of gas wire yards distance