Plants filter out green light to protect photosynthesis from “noise”

Plants are able to make photosynthesis more efficient by filtering out spectra of solar light that change most rapidly in their environments.

Protecting themselves from such “noisy” input allows them to obtain “quiet” outputs of energy.

This provides “…a unified theoretical basis for the experimentally observed wavelength dependence of light absorption in green plants, purple bacteria, and green sulfur bacteria.”

That quote is from the study: Quieting a noisy antenna reproduces photosynthetic light harvesting spectra.

Nathaniel Gabor, one of the authors of the paper, said of it: “Our model is the first hypothesis-driven explanation for why plants are green, and we give a roadmap to test the model through more detailed experiments.” (emphasis added)

This general principle—turning noisy inputs into quiet outputs—can probably be applied to many other systems, including human psychology. In this respect, many human behaviors could be viewed attempts to achieve quiet, steady, or consistent outputs by reducing noise.

FIML is a super efficient noise reducer.

 

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