Don't forget.I've never used any white LEDS except 10mm.
They weren't bright enough or were the wrong K.
I don't know,they didn't work at all.
I look at it as 2+ X the Lumens as Fluoros at about the same watts,depends on the bulb used I guess,T12 are different from T8 etc.
ALL the light is focused forward(less waste).
I'll use the CD spectrometer to see the thickness of the bands of color.
Another fun toy-
http://www.docstoc.com/docs/18066359/Einstein-Award-‐-pre-visit-lesson-plan-CD-Spectrometer
If they don't work,they'll make good yard lights or something.Sell them to a guy who owns a boat and needs deck lights...
I know guys switching to LED spots on their boats.
The only complaint I heard was that some have a LOT of blue in them.
At night trying to select a certain shade of a color lure gets hard with the blue light messing with what you are trying to see.Especially if you are looking for a shade of a color...
Most people liked them and said they were as bright as what they had before(halides or Halogens of some type).
I do think it's worth the risk to buy them though.
I'm reading about a lot of people using the bigger ones with good results.
I think some Pot farmers in Europe were stealing cars to get the Headlights to grow their plants under.
I think headlights were supposed to be halogen.
All the newer motorhomes are LEDs for lighting,including turn signals.
I haven't seen them with LED headlights yet.
They are replacing all the street lights here with LEDS lately.
I think there is less glare too from them.
Tech with LEDS is changing all the time.
I'd like to see what the street lights have in them.They look like 6 LEDS(maybe 8,I forget).
Easily as bright or brighter than the old ones.
He who dies with the most toys wins.
An old bumper sticker I saw on a motorhome once.
I've seen mixed results from the screw in bulbs.
A LOT are junk or WERE junk a few years ago.
On other forums I see guys using them like the compact bulbs but get a LOT better results.They build multi bulb fixture with 4 of the bulbs for tents etc.
Years ago they mostly did well but fried in a few months.
I think for even China,quality control is way up from the past.
I use only Chinese LEDS and the ones that fried were due to me overdriving them.
Chinese data sheets suck.
Gotta do the math.Volts X amps.=watts.
If a data sheet runs the LED hotter it's because it was pulsed to get the data to look like the LED was something it isn't,unless it's pulsed.
Pulsing LEDS is GREAT for room lighting,it increases Lumens but plants won't grow under pulsed light.
From what I understand,Light causes a chemical or whatever reaction in plants.
Constant light gets photosynthesis going.Pulsed light won't work.The plant doesn't have time enough to react to it.