A cool guide for the lights!
A cool guide for the lights!
12 comments
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For those like me wondering why oxygen emission depends on altitude, it's that the excited lifetime is very long for red, so it tends to decay via collisions at lower altitudes.
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It's cute the atomic oxygen is excitied, too <3
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Is this color difference related to Rayleigh scattering? i.e. the reason why the sky is blue, and why sunsets are red?
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Why is the distance in miles a whole number while the distance in metric is not?
12 comments
The significant digits! They burn!
I can't believe you forgot the adage:
Two-four-one-point-three, oxygen glows green.
Two-four-one-point-five, glows red like a fire.
They are astronomers, they calculated the height in metric units. The fact that the threshold works out to exactly .15 kilomiles is a coincidence. /s