paul wheaton wrote:
I have ordered a light meter and a really fancy kill-a-watt. I plan to mount both of those (for the sake of video) and then test several light bulbs to get the lumens per watt and compare it to the packaging. I think the first 30 seconds of use for an incandescent will be very predictable. I think the first 30 seconds of use for a CFL will not comply with what the package says.
As for the test where the lights are kept on for 30 seconds and then off for two minutes. I suspect that the incandescents (labeled for 1000 hours) will outlive the fluorescents (labeled for 10,000 hours). I also think they will all peter out before 500 hours.