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There is something about the spectrum in other sources that does something different.
* MIXING LIST
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LED UV (400nm) [120°] x1
LED RoyalBlue (440nm) [120°] x3
LED Blue (470nm) [120°] x3
LED Cyan (490nm) [120°] x2
LED Green (540nm) [120°] x13
LED Amber (590nm) [120°] x3
LED Red (620nm) [120°] x3
LED DeepRed (640nm) [120°] x1
LED DeepRed (650nm) [120°] x1
LED DeepRed (660nm) [120°] x3
LED DeepRed (680nm) [120°] x1
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* SIMULATION DATA
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Luminous flux : 2,006 lm
Radiant flux : 8,459 mW
PPF : 37.8 umol/s
TCP : 8130 K
CRI : 86
λp : 438 nm
Color : #E3D0FF
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* PERFORMANCE @ 30cm
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Irradiance : 10 W/m²/s
Illuminance : 2,366 lx
PPFD : 44.6 umol/m²/s
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by SPECTRA 1.0β @ 1.023world
http://spectra.1023world.net/
https://www.ncbi.nlm.nih.gov/pubmed/28039776We quantified the effect of adding far-red light (peak at 735nm) to red/blue or warm-white light on the photosynthetic efficiency of lettuce (Lactuca sativa). Adding far-red light immediately increased quantum yield of photosystem II (ΦPSII) of lettuce by an average of 6.5 and 3.6% under red/blue and warm-white light, respectively. Similar or greater increases in ΦPSII were observed after 20min of exposure to far-red light. This longer-term effect of far-red light on ΦPSII was accompanied by a reduction in non-photochemical quenching of fluorescence (NPQ), indicating that far-red light reduced the dissipation of absorbed light as heat. The increase in ΦPSII and complementary decrease in NPQ is presumably due to preferential excitation of photosystem I (PSI) by far-red light, which leads to faster re-oxidization of the plastoquinone pool. This facilitates reopening of PSII reaction centers, enabling them to use absorbed photons more efficiently. The increase in ΦPSII by far-red light was associated with an increase in net photosynthesis (Pn). The stimulatory effect of far-red light increased asymptotically with increasing amounts of far-red. Overall, our results show that far-red light can increase the photosynthetic efficiency of shorter wavelength light that over-excites PSII.
https://www.popsci.com/why-deep-sea-coral-glow#page-3By analyzing how well how well different light colors spread through dense layers of zooxanthellae, researchers from the United Kingdom’s University of Southampton, the Interuniversity Institute for Marine Sciences of Eilat, and the University of Haifa were able to ascertain that corals in in deep water make a special type of fluorescent protein that captures blue light and re-emits it as orange-red light. The orange-red light can penetrate more deeply into the coral’s tissue, essentially allowing the coral to spoon-feed the zooxanthellae the light it needs.
To help confirm their findings, they exposed bright red, fluorescent corals and similar but unpigmented ones to simulated deep water light environments in an aquarium. The red corals survived better in the long run that their unpigmented counterparts.
Have any one investigates if fluorescence can emit far red? I know – is wild speculations but sometimes it need to be done.
There is a work done about the theory of altering of the light regime in deeper water by fluorescence, but I can´t get it for the moment.