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Doppler Effect
(xkcd.com)
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this post was submitted on 29 Apr 2024
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This does not seem correct at all… as the comic states, it’s caused by the Doppler effect, not because red is the “fastest” light wavelength—it’s light it all travels at the same speed in a vacuum.
https://en.wikipedia.org/wiki/Redshift
I don’t know about lightning photography, I suppose it’s possible that different wavelengths have different speeds in air, so I can’t comment on that.
Yeah I'm no physicist but that ticked me off, the speed of light is the same for any wavelength. As for redshift:
Speed of light isn't a factor in this, also when galaxy's move towards us (like the Andromeda galaxy) it is blueshifted, proving it's not the light that matters, but rather the direction of movement of the source. Proving the doppler effect.
Could this be because space isn't a true vacuum? There's pockets of gas and crap, which could affect the speed of the light as it travels to us?