You have to compare apples to apples you know, here are a few basics:
LUMENS is how much light the device produces regardless of the source.
Lumens per Watt is a measure of the electrical efficiency of the device again regardless of the source. CFL is more efficient then Incandescent but LED is more efficient (more lumens per watt) then CFL
Color rendition: Terms such as cool white or warm white or deluxe warm white etc relate to Degrees of Kelvin temperature.
As far as light pattern or distribution that can be changed by the reflector or housing design like if you wanted a spot light or a flood light etc.
Looks like LED is the future, its all I have in the RV now. I chose 3000 degree Kelvin in some locations (less harsh) but the brighter whiter 6000 degree kelvin in other places.
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Today's Featured Article - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
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