In the surge of conservationist enthusiasm sparked by the energy crisis, lights and appliances are being turned off at every hand. But such self-denial should be managed with discrimination; some savings are worthwhile, and others are minuscule. A sampling of the energy consumption of various kinds of gear at average 1972 electricity prices:
HOUSEHOLD LIGHTS: A 50-watt bulb, incandescent or fluorescent, costs little more than one tenth of a cent an hour to use, but the fluorescent type delivers up to three times as much light a watt.
CHRISTMAS LIGHTS: A 6-ft.
Christmas tree lit by 75 standard bulbs burning four hours a day...
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