Light is photons so how do those photons hitting our eyes let us know what things look like.
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Your eyes have a lens at the front that focuses light and receptors at the back that produce electrical impulses when they get hit by light at the correct frequency range Those electrical impulses are sent to your brain that interpret their duration, quantity, intensity, redundant information from each eye and other parameters as sight.
Same way your ears have a piece that vibrate when hit by sound (an air vibration at a certain frequency range) and produce electrical impulses that your brain interpret as hearing
And your tongue and nose have chemical receptors that produce electrical impulses and your brain… Well you get it.
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