Why are the dark sea blue and the seafoam white?
Sitting on the beach, watching the vast deep blue sea, rolled up thousands of waves, how majestic! But, why is the foam curled up on the dark blue sea surface white? Take a teaspoon of seawater and see, hey? The seawater is neither dark blue nor white. It was just like tap water, colorless transparent. Who put the colors on the sea and foam? That’s the sunlight magic.
Sunlight comes from the light of seven colors: red, orange, yellow, blue, blue, indigo, and purple. When the sunlight hits the sea surface, light with relatively long wavelengths like red light, orange light can slip through all obstacles, go straight ahead. In the process of going on, they are constantly absorbed by seawater and marine life. Light has a relatively short wavelength, such as indigo light, purple light, although partially affected by seawater and seaweed, etc. absorption. Still, most of them encounter the interference of the seawater immediately scattering around or reflecting. What we see is that light is scattered or reflected. The deeper the seawater, the more indigo light will be scattered and reflected, so the deep blue sea is always seen.
So why is the foam white?
The Glass is transparent with no color; every piece of Glass is still transparent after being broken. But when we cornered them, they turned into a white pile, thanks. Besides, breaking Glass into glass chips looks a lot like a pile of snowflakes. What is that for? It turns out that Glass can let light rays pass through, can also reflect light. Glass after breaking apart, forming many different angles, and piled up again, when the light shines through, in addition to happening reflections, refraction occurs many times. And the light ray, after going through so many sections of the guy y folded, refracted or scattered from each different direction, our eyes encounter this kind of light and immediately feel a white patch.
True wave foam is like shredded Glass, it also causes the ray to go through many times, so it looks white. White snowflakes are also very similar to shattered Glass, as snowflakes are composed of ice crystals. Ice crystals have a complex texture. It can cause the light rays to be reflected, fully reflected, and refracted, resulting in a pure white patch.