WATTS AND UNITS

THE Board of Trade electrical unit is the kilowatt-hour, which signifies a consumption of energy at the rate of 1,000 watts in an hour, or at a smaller rate for a corresponding longer time. The companys meter registers the units as they are consumed, and the householder pays accordingly. A 40-watt lamp will run = … Read more

LAMPS

THE gas-filled lamp has now largely superseded the vacuum lamp, as it emits a whiter light and is more efficient: that is, gives more light proportionately to the electrical energy used. The bulb, after being exhausted of air during manufacture, is filled to half atmospheric pressure with a gas called argon, which is unable to … Read more

LAMPS IN THE SCHEME OF DECORATION

A Guide to the proper Lighting of each Room in a House YOU cannot create a successful scheme of decoration and then add the lamps as an afterthought. For the scheme is not complete without its lamps and their shades, and if they are added afterwards the chances are they may spoil your room or … Read more