The sea water is colorless, why does it look blue?

There may be a reason for the plant at the bottom of the water.

Although the water is colorless, the sea is blue, because the visible light that our human eyes can observe is absorbed by the sea layer by layer. Depending on the wavelength, in the end, only the blue visible light can be seen. So

Like the Red Sea, the Red Sea is dyed red because the reddish-brown seaweed in the ocean multiplies throughout the year. The Arctic Ocean, as well as the White Sea, where the water is white and low in organic matter because of the perennial snow cover. In addition, due to the formation of a density cline (i.e., a very large density difference between the surface and deep seawater) between the surface and deep waters of the Black Sea, there is a density clineThe exchange of water between the upper and lower aquifers is severely hampered.

A large amount of sludge is accumulated on the seabed, and there are many storms and haze in the Black Sea region. By the time the sea made huge waves, it was already completely dark.

I feel that the reason why the sea is blue is because it is not blue itself, but it becomes blue through the refraction of the sky.

It is true that the water in the sea is transparent and colorless, but because the sky is blue, the sea water shows the color of the sky under the action of light, that is, blue.

Because of the refraction of light, the sea water refracts the color of the sky, and there is more sea water, so the water is blue from a distance.

There are countless creatures in the ocean that we can't predict, such as seaweed, coral, etc., which will cause certain changes in the seawater, so the color of the seawater will change.

In fact, the sea water is also transparent and colorless, but we may think that the sea water is blue, because the sea water reflects the color of the sky to our eyes, but if we look at the sea on a cloudy day, it will not be blue.

Water is transparent and colorless, and seawater is also transparent and colorless, and its blue color is due to the refraction of light, which refracts the blue in the air into the water.

The sea water is refracted by the sky, and because the sky is blue, the water is transparent and colorless, but the sea water is blue.

The sea water itself has no color, but because it is so vast that it looks like a giant mirror that reflects the blue of the sky, it creates the illusion that the sea is blue.

In fact, the seawater is also some transparent and colorless, it may be that some seaweed components will make the seawater look blue, looking down from above, some plants or seaweed are set off.

This is because there is a reflection and absorption between light and seawater, so we see blue seawater, in fact, seawater has no color, and it is the same as ordinary water.

It's because the sky is blue, and when the sky is refracted by light into the sea, the sea turns blue.

The blue sea is formed because the sea water reflects the color of the blue sky through the refraction of light.

The color of seawater is mainly caused by the optical properties of seawater, that is, the absorption, reflection and scattering of the sun's rays by seawater. Sunlight is composed of red, orange, yellow, green, cyan, blue, violet seven colors of light, the wavelength of the seven colors of light is different, from red light to violet light, the wavelength gradually shortens from the length, among which the long wavelength of red light, orange light, yellow light has strong penetrating ability, and is most easily absorbed by water molecules. Blue light and violet light with short wavelengths have weak penetrating ability, and are most easily scattered and reflected when encountering pure seawater.

And because people's eyes are very insensitive to violet light, they often turn a blind eye and are more sensitive to blue light. As a result, the ocean we see takes on a blue or deep blue color. If you beat a bucket of seawater and put it in a bowl, the seawater is colorless and transparent like ordinary water.

It may be that there are too many combinations to make it blue, but in fact, when the number is small, it is white water.

It is blue because there is more blue light in the visible light passing through the atmosphere, causing the sea water to refract blue.