4 ms·
Not in general. They are both around 60 lm/W. Of course there are exceptions. https://en.wikipedia.org/wiki/Luminous_efficacy#Lighting_efficiency https://en.wik
by tomsaffell 10y ago
Not in general. They are both around 60 lm/W. Of course there are exceptions. https://en.wikipedia.org/wiki/Luminous_efficacy#Lighting_efficiency https://en.wikipedia.org/wiki/Luminous_efficacy#Lighting_eff...
- wlesieutre 10y ago60 lm/W is very low these days. Commercially available screw-base A21 bulbs like Cree's "100W replacement daylight" (17,000 lumens at 15W) are up over 110 lm/W. You can get that for $14 at Home Depot. http://creebulb.com/100-watt-replacement-daylight http://creebulb.com/100-watt-replacement-daylight http://www.homedepot.com/p/Cree-100W-Equivalent-Daylight-5000K-A21-Dimmable-LED-Light-Bulb-SA21-16050MDFD-12DE26-1-11/207169063 http://www.homedepot.com/p/Cree-100W-Equivalent-Daylight-500...