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28 octobre 2022 - 01:34
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Why aren't plants black? ?
Why are plants green? Is there a reason plants evolved to be green, globally? What does it have to do with the color of the sunlight coming down through our atmosphere?
If you liked this video check out these:
Bandaids Glow when Opening?! | EVERYDAY MYSTERIES
https://www.youtube.com/watch?v=DIILDg2d3Yk
Why Hawaii's volcano is so UNUSUAL
https://www.youtube.com/watch?v=k0tnqPmwWvk
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Help us translate our videos! http://www.youtube.com/timedtext_cs_panel?c=UC7DdEm33SyaTDtWYGO2CwdA&tab=2
Creator: Dianna Cowern
Editor: Jabril Ashe
Hamburger eater: Jabril Ashe
Colorful Planet Artist: Ashley Warner
Thanks to: Dan Walsh, Kyle Kitzmiller, Joe Hanson and Kyle Norby
Sources:
Black Nigrescens Plant:
http://www.thedangergarden.com/2013/02/ophiopogon-planiscapus-nigrescens-my.html With permission from Loree Bohl,
thedangergarden.com
Green Nigrescens Plant:
With permission from © Davis Landscape Architecture, London, UK http://www.davisla.com
Solar spectrum adapted from:
https://commons.wikimedia.org/wiki/File:Solar_Spectrum.png
Chlorophyll spectrum adapted from:
http://www.austincc.edu/biocr/1406/labm/ex7/prelab_7_4.htm
The Functional Significance of Black-Pigmented Leaves: Photosynthesis, Photoprotection and Productivity in Ophiopogon planiscapus ‘Nigrescens’
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3691134/
Functional evolution of photochemical energy
transformations in oxygen-producing organisms
http://www.publish.csiro.au/FP/pdf/FP09087
Evolutionary Competition Between Primitive Photosynthetic Systems: Existence of an early purple Earth?
http://adsabs.harvard.edu/abs/2006AAS...209.0605S
A Compilation of Selected Data on Solar Radiation at Sea Level
http://www.dtic.mil/dtic/tr/fulltext/u2/646355.pdf
Green Light Drives CO2 Fixation Deep Within Leaves
http://pcp.oxfordjournals.org/content/39/10/1020.full.pdf+html
Green Light Drives Leaf Photosynthesis More Efficiently than Red Light in Strong White Light: Revisiting the Enigmatic Question of Why Leaves are Green
http://pcp.oxfordjournals.org/content/50/4/684.full.pdf+html
http://msue.anr.msu.edu/news/green_light_is_it_important_for_plant_growth
https://www.researchgate.net/publication/40900745_Cost_and_color_of_photosynthesis
http://www.annualreviews.org/doi/abs/10.1146/annurev-arplant-042110-103811
The sensitivity of the human eye to different colors
https://www.ecse.rpi.edu/~schubert/Light-Emitting-Diodes-dot-org/Sample-Chapter.pdf
Music: APM
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