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comment Could we transmit smells electronically?
one question: just how specifically can one stimulate those receptors. The fact that any wavelength of light stimulates all three photoreceptors to some degree has the interesting consequence that it's impossible to mimic the full color space with 3 primary colors. I wonder if scents would have a similar limitation.
Oct
31
awarded  Good Question
Sep
30
awarded  Explainer
Sep
21
comment Would oxygen levels be stable without photosynthesis?
Also, maybe worth clarifying what "the entire organic carbon reservoir" is referring to. I'm assuming it means all life on earth, plus all fossil fuels we could conceivably dig up.
Sep
21
comment Would oxygen levels be stable without photosynthesis?
So basically Unger's claim is based around the ideas in third reference (The last link is worth a read): carbon is the limiting reagent in the C + O2 -> CO2 reaction? My gut reaction is that in the absence of photosynthesis we don't live in a bistable system: we'd eventually return to the state from billions of years ago. But I can believe that initially there would be very little change.
Sep
20
revised Would oxygen levels be stable without photosynthesis?
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Sep
20
revised Would oxygen levels be stable without photosynthesis?
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Sep
20
revised Would oxygen levels be stable without photosynthesis?
added 187 characters in body
Sep
20
asked Would oxygen levels be stable without photosynthesis?
Aug
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awarded  Popular Question
Aug
12
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Jul
22
awarded  Nice Question
Jul
2
awarded  Curious
Jun
16
revised Do trees age on a microscopic level?
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Apr
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awarded  Yearling
Feb
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awarded  Popular Question
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awarded  Notable Question
Jul
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comment Does red light preserve your night vision?
I looked up photochromatic step, but I'm not sure what I'm looking for, do you have some link to whatever you're talking about?
Apr
30
awarded  Yearling
Apr
27
answered Are there verbs for “undergo mitosis” and “undergo meiosis”?