Energy Efficient Light Bulb Comparison

I gave 5 stars because the content is worth knowing, but it was a little slow, maybe could be expressed in 1/3 the time, like we don't need to actually see the amperage ramp up to .112 for the CFL, we'll take your word on it. Stuff like that can be cut out. The facts and set up is most important.

For equal lumens, it'd take about 13 of the LED lightbulbs to equal a CFL, so CFLs are still king right now. OLEDs might overtake LEDs soon I hope. CFLs have mercury in them, but OLEDs are very safe I understand.

That's a great idea. We struggled with how much information to show in this video, but we're considering making a new version. If we do, we'll definitely include the lumens per watt metric.

Anyway, the efficiency in terms of lumens per watt for the bulbs shown here, the 60 watt incandescent comes out to be about 13.52 lumens/watt (850 lumens divided by 62.87) but I'll round it off to 14. The Compact Fluorescent will give you about 57 lumens/watt and finally, the LED bulb comes out to be about 20 lumens/watt. That will make the Compact Fluorescent more efficient than the LED bulb shown.

Good video but if you really want to talk about efficiency, you should also explain how efficient each lamp is in producing light using "lumens per watt"
I'll let look up that term by yourself but if you divide the average lumens of the light source by the wattage consumed, you should get an average lumens per watt. For a more accurate lumens measurement, you'll need an intergrating sphere and a light meter.