one more thing about lumens | |
Ok I guess you all know how I feel on lumens and this may have been said before but
Lumens are only the measurement of one wavelength of light... specifically 555nm. WE ignore all other wavelengths including the 470 nm plants like for veggin and the 670nm used for flowering.( you accually get a few lumens from these wavelengths but it is stastically insignificant).
The scientific def of lumen is : 1 watt of energy radiating at 555nm produces 683 lumens.. So with a perfect 555nm wavelength 1000watt bulb would produce 683,000 lumens.. but I doubt you could even germ under this light. In the same breath if you measure the lumens of a 400 watt hps to be 45000 then you are only measuring ~16.5% of the accual light output or rather 65 watts of the light makes the "lumens" while the rest are removed from the equation...I know this is a super generalization.. The percentage is much higher due to the "ease" of making green and yellow light and some of the watts are lost due to luminal effiency and heat but you are still throwing out a lot of light from the equation and the truer the spectrum of the bulb or it's CRI the more light or accual photons get throw out of the equation.. epecially the ones the plants care about.
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My hamburgerification has been greatly exagerated. Back in the herd. |