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The sun is classed as a green star[1]. As a black-body object, it emits the most light in the green spectrum. We see white because we evolved to distinguish c
by cdumler 4y ago
The sun is classed as a green star[1]. As a black-body object, it emits the most light in the green spectrum. We see white because we evolved to distinguish color based on our star; however, our ability to detect variance in brightness in colors is far more limited.
We, in fact, use this to our advantage. View screens transmit exactly brightness in narrow red, green, and blue such to fool our eyes into believing we see colors there that are not in fact there, such as red and green light to simulate yellow light.
[1] https://en.wikipedia.org/wiki/Green_star_(astronomy) https://en.wikipedia.org/wiki/Green_star_(astronomy)
- thehappypm 4y agoBut chlorophyll doesn’t absorb green, it absorbs other colors !
- deleted 4y ago[deleted]
- caper 4y agoBlue and red are the maxima but chloropyll does absorb green light too - just less of it (and possibly less efficiently). The article claims "[plants] absorb only about 90% of the green photons." which seems to be a typo and should be absorb 10% or reflect 90%. I'm having great difficulty obtaining complete absorption spectra from the literature - nobody seems to have bothered investigating since the 1950s (https://sci-hub.se/https://pubs.acs.org/doi/10.1021/cr60147a001 https://sci-hub.se/https://pubs.acs.org/doi/10.1021/cr60147a...) with most modern papers seemingly content with declaring the red/blue maxima and not giving the full range. The paper I linked shows nonzero absorption for greenish wavelengths approaching 10% towards yellow - which would marry with my interpretation of the article's typo.