How is it that we see the world almost instantaneously? Shouldn’t it take much longer to interpret so many photons which are bombarding the eyes with speed of light? Shouldn’t our vision lag?
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Light strikes a molecules in the eye. These molecules absorb it, break, and send a signal.
This signal moves relatively slowly to the brain, where it is processed. It takes tens of milliseconds for that to happen.
In ten milliseconds, light travels 3,000 kilometers, so… Yeah. There’s definitely a lot of lag by the standards of light, but by the standards of things humans do the lag is insanely small.
And it doesn’t matter how many photons we actually absorb, because each photon hits a different molecule, so they’re processed side by side. It’s not like they have to wait in line.
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