Why is the ocean blue?

Glenn Smith, a professor at the Georgia Institute of Technology (USA), explained this problem: seawater is actually colorless but because it reflects the sky's blue color, we often see them green, due to so when the sky has many gray clouds, the sea water becomes gray.

Why is seawater blue but river water?

The seawater is green simply because of the blue water as we see it. The blue color of the sea water is determined entirely by sunlight.

Sunlight due to light of 7 colors: red, orange, yellow, green, blue, purple, composition. When sunlight shines on the surface of the sea, there are many small suspended particles in the sea, light with long waves like red and orange light cannot penetrate these obstacles and go straight to front.

The blue color of the sea water is determined entirely by sunlight.

In the process of moving forward, they are constantly being absorbed by seawater and sea ​​creatures. As for the light waves with short waves like blue light and violet light, there are also some parts absorbed by seawater and seaweed, but most of them encounter obstacles of seawater, scattering them around or reflecting right away. again. What we see is the part of light scattered or reflected. The deeper the sea water is, the more blue light is scattered and reflected so the sea is always green.

For hot colors like red, oranges can penetrate every obstacle that directly shines down, this color light is constantly absorbed by seawater and sea creatures. This is why river water is not as green as sea water.

In particular, there is also the Red Sea because there is always a red seaweed living and thriving. Meanwhile, the Black Sea is very dark because the seawater contains many substances H ₂ S (darkening the seawater starting from a depth of about 100m or less).

So why is the wave white?

Glass cups are transparent colorless, glass pieces after the glass is still transparent, but when we sweep them together, they will become a white pile. Moreover, the glass shattered, the pile was colored in white. If the glass breaks into glass beads (like powder) it will look like a pile of snow.

Ocean waves are shattered glass particles, causing the light to dim and create white when viewed.

Why is that?

In fact, glass can penetrate sunlight and also reflect, glass is piled up so when light passes through, in addition to reflections, there are many refractions, and light after Through many times the philosophy will refract or scatter out in different directions. Our eyes encounter this light will have a white feeling.

Sea waves are crumbling glass beads, similarly making light rays blurry to create white when viewed. That's why the seawater is blue and the waves are white.