Household LED Lighting
Plants require about the same wavebands of light that we people see in; from violet to deep red, and on into the non-visible near infra-red (380 to 720ish nanometres - nm).
Typical incandescent light bulbs deliver a lot of this, although unique bulbs for plant development are better - various spectra impact different aspects of plan development, e.g. blue light make a difference stem development.
LEDs by contrast only emit light at very slim peaks, and regular plant development usually needs a wider spectrum. At a push plants could possibly get by on red LEDs emitting at 690nm with supplementary light within the blue around 450nm, that can easily be supplied by some white LEDs. Many white LEDs emit when you look at the approx. range around 450 to 550nm, that may never be sufficient alone to allow plant development.
Check the image: the green lines are where you desire your plant become, in order to note that by relying only on white LEDs you may not be developing good berries. Supplementing with a few red LEDs (sorry I don't know what amount of you'd require, but look at the report "Design and fabrication of flexible red-green-blue Light-emitting Diode light arrays for plant research" for information), and it'll help somewhat.
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