million candle led lights?

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mainliner

Well-Known Member
in sorry mods but iv allready posted this thread in the newbie section but didn't know how to move it,,,
ok what is going on with these million candlepower led torches,, 1 candlepower = 12.57 lumens ? ? ? Am i missing something or what , anyone any professional knowledge on this subject,,thanks
 
MrFlux

MrFlux

Well-Known Member
The candle unit (or rather candela) is a measure of lumen per sterradian; sterradian is like a two dimensional angle, in this case of the light beam. If a given amount of light (lumens) is focused in a beam, the number of candela's goes up the tighter the beam (or the smaller its angle) is.

The number 12.57 (=4 Pi) is the number of sterradians of the entire sphere; This applies to a light source that shines evenly in all directions.
 
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mainliner

Well-Known Member
MrFlux said:
The candle unit (or rather candela) is a measure of lumen per sterradian; sterradian is like a two dimensional angle, in this case of the light beam. If a given amount of light (lumens) is focused in a beam, the number of candela's goes up the tighter the beam (or the smaller its angle) is.

The number 12.57 (=4 Pi) is the number of sterradians of the entire sphere; This applies to a light source that shines evenly in all directions.
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is that a good thing then?
 
M

mainliner

Well-Known Member
MrFlux said:
A torch doesn't give enough light. Plants need a lot of light. You could use a LED flood light.
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you mean a torch gives directional light, that's what in saying it has about 5 degree angle of spread, so id just put it like 50 metres away, the sun is far away, see , its too late now anyway iv bought one , 1,000,000 candles shining on some big colas, ill test it
 
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