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FAQ
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Lumens, Watts, and Life
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How do you calculate the cost of operating a light bulb?
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How is the life of a light bulb determined?
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Can you operate a 100 watt light bulb in a socket rated
for 75 watt?
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How does a three-way light bulb operate?
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What is DuraMax®?
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What is Philips Halogená®?
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What is the difference between Incandescent and
Halogen Light Bulbs?
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Does the Halogená® bulb produce more heat than the incandescent bulb?
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What is Philips MARATHON™?
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What is the difference between Incandescent and Compact Fluorescent Light Bulbs?
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What is ALTO® Technology?
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How to choose a fluorescent tube
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Should I wait until a fluorescent bulb burns out before
replacing it?
Terms & Definitions
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Color temperature or Kelvin temperature
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CRI or color rendering index
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Warm vs. Cool
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T
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Ballast