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I was looking for information on this, but could only come up with this taken from website: www.homeenergy.org/archive:-

As we grow older, the amount of light required to perform a task such as reading a newspaper increases dramatically (for most people starting at about age 40). The light level needed continues to increase at almost geometric rates. Senior citizens particularly need high levels for activities like reading. If an auditor/installer finds a lot of 150-watt light bulbs in a house, there is probably a good reason. No single CFL currently available on the market that can match the output of a 150-watt lightbulb (although installing a socket doubler with two high-wattage CFLs will do in most circumstances). Attempting to replace a 150-watt incandescent with a 27-watt CFL will not work. The CFL will be removed quickly and the old 150-watt incandescent will be back in service.

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13y ago

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