I've always wondered how we could parametrize light using only three variables, when light as a wave is infinite dimensional. But then I realized the reason why is because our retinas have only three distinct cones. But then this must mean our eyes aren't even close to decoding all the possible information from the visible spectrum. For example, we can't even detect the phase of light, can we?

I've always wondered how we could parametrize light using only three variables, when light as a wave is infinite dimensional. But then I realized the reason why is because our retinas have only three distinct cones. But then this must mean our eyes aren't even close to decoding all the possible information from the visible spectrum. For example, we can't even detect the phase of light, can we?