Quote:
Originally Posted by Cedars
Type of light = wavelength/frequency/specific portion of the spectrum.
Plants use mostly blues and reds for growth (dependent on plant type). The aquariums tend towards blue light because it moves thru the water better than the reds (if I remember right). Many of the home lights do not produce the right wavelengths to promote plant growth. The full spectrums are getting better but its a buyer beware market out there. K rating is one way to generally measure. Some lighting packages are listing K, CRI, and graphing out what wavelength/frequency their light is producing.
Colour-Temperature; blackbody radiation visualisation |
I understand all this Cedars, but I still can't understand what you mean by:
Quote:
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Originally Posted by Cedars
Alot of those 'party lights' are colored glass and doesnt impact the type of light your receiving.
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The colored glass is changing the wavelength/frequency of the light. The K scale is measuring the same thing essentially (wavelength), except it assigns the color (read wavelength) value in relation to a radiating black body (such as stars; hotter stars [more K] are blue/white and cooler stars [less K] are red/orange/yellow).
In other words, if I take a flashlight and shine it through a blue lens, I am changing the wavelength of the light, and hence I see blue on the other side. Correct me if I'm wrong.
The reason I believe 'party lights', and other household lights, are not good for plant growth is because they lack intensity (much of the energy generated is thermal, hence these bulbs get hot).
They would probably work, if you could get close enough to the plants without burning them.
