A correction: Lumens weren't introduced for CFLs. They have been on incandescent bulb packages for a decade or more. Granted, they are more important for CFLs and LEDs, as the watts tell you nothing about the amount of light across technologies, but they are not recent. Remember, you are buying lumens and paying for watts to get those lumens. An electric heater can be 1500 W and no lumens at all. -- John Steele
So much the better! I haven't bought incandescent bulbs in about ten
years (CFLs last so much longer), so I didn't know that the lumen
information had been included on those packages as well. Also, the
packages show the light "warmth" in degrees Kelvin. That is very useful
as my eyes want the brighter ("daylight") light to read small print.
- [USMA:54442] local PBS radio program "Measurin... Lee Sacks
- [USMA:54445] Re: local PBS radio program "... csm
- [USMA:54446] Re: local PBS radio program &... John M. Steele
- [USMA:54449] Re: Lumens on Lighting Pa... csm
- [USMA:54447] Re: local PBS radio program &... Ressel, Howard R (DOT)
- [USMA:54448] Re: local PBS radio progr... Patrick Moore
- [USMA:54450] Re: Fractions csm