Life: Society - Living - Environment - Health - Technology
Let There Be Light
[This article contains a table. Please see hardcopy of magazine.]
INCANDESCENT BULB VS. COMPACT FLUORESCENT LIGHTBULBS (CFL)
Power use
INCANDESCENT BULB
60 watts
Amount of electricity used to light a common incandescent bulb
COMPACT FLUORESCENT LIGHTBULBS (CFL)
15 watts
Amount of power needed to light a CFL of equal brightness
Average price
25¢-$1
INCANDESCENT BULB
per 60-watt bulb
COMPACT FLUORESCENT LIGHTBULBS (CFL)
$2
per equivalent 15-watt bulb
Life span
INCANDESCENT BULB
1,000
hours, approximately
COMPACT FLUORESCENT LIGHTBULBS (CFL)
10,000
hours, approximately
Cost for five years of light (at 10¢ per kW)
INCANDESCENT BULB
$262.80
COMPACT FLUORESCENT LIGHTBULBS (CFL)
$65.70
CFLs were invented in response to the 1973 Middle East oil crisis
The bulbs can save up to 2,000 times their weight in greenhouse gases
Wal-Mart alone is aiming to sell at least 100 million CFLs a year
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