sun puts out 93lumen per wattage?

dalgoda

Well-Known Member
so the sun puts out about 93 lumens per watt according to wikipedia
that would mean that on the average a CFL is about half the strength of the sun, given we were always about an inch from the bulb.
so half strength is like partly shady conditions of growing then?
quick grasp on the cfl things?
it is like growing weed in a shady area as opposed to getting it more in the direct sun?
any discussion is great....
cause that makes more sense than bulb this brand that cfl's suck hps better stuff as we always find the case
so an hps output maybe a match of sunlight's 93 lumen per watt?
 
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Morlan

Active Member
So, how many watts does the sun put out, and how did someone go about working that out? that's what I'm asking myself right now.

As far as I'm aware, and I can only but put my (fairly good) understanding of particle physics in to play here;
Every lamp is going to have a lower output by any scale you apply to match the two together. The sun is an atomic reactor that produces all the light spectrum at once.. now .. if you were to be able to build a lamp that emits more photons than the sun in the same "volume" of space (not as in outer space, (incase there are any Spock's on here)) then you would have one REAL impressive lamp, also it would probably irradiate you with all those photons.

I could be wrong and one has been built, but a CFL is not it, and as far as im aware neither is a HPS.

Mor

I could always be wrong.
 

rictor

Well-Known Member
i dont even think u can tell how many watts and lumens the sun is
and a cfl half the strrength of the sun
no way
 

bfq

Well-Known Member
"Four-hundred septillion watts! That's 400 trillion-trillion watts!" - Bill Nye The Science Guy. PBS. 20 November 1998

According to the World Book Encyclopedia, "about 126 trillion horsepower is sent to earth."Dividing the converted value of 9.4 × 1016 watts by 2 × 10-9 gives a total power of 4.7 × 1025 watts.

you want to compete with what? :o
 

Ethnobotanist

Well-Known Member
The sun is a gigantic nuclear fusion reactor. It has the strength of more atomic bombs than I care to look up.

No man-made light can compete with the sun. It can even penetrate canopy cover in the rain forest, my friend. This is why many prefer to grow outdoors. The only advantage of indoor light is during the vegetative state, when plants can benefit from the light any number of hours in a day.

~Ethno
 

AlphaNoN

Well-Known Member
The sun is in excess of 50,000 lux (lumens per square meter) at sea level on the surface of the earth on a clear day. A 3600lm cfl is around 1000 lux less than 1 inch away from the bulb.

 
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