Doing some reading into photonics and nanophotonics. It seems that if a hole is smaller than the wavelength of light, then the light cannot go through the hole. For example, if a hole is smaller than 570nm (green), then green light and light with wavelengths less than 570nm can pass through the hole but red (750nm) cannot pass. I do not understand why that is. I'm using the classic analogy of waves at sea to picture photon behavior. I would think that amplitude would be the limiting factor since a low lying bridge would block waves taller than it. The wavelength of the waves would not matter at all right?