Light Spectrum
When light comes to the Earth from the Sun,
the human eye can only see a narrow spectrum of that light.
This is called the visible spectrum.
The human eye is sensitive to certain colors.
When the Sun shines on the ocean, all colors of light enter the water.
The yellow and red light is absorbed in the upper portion of the ocean. However, only the green and blue spectrum of light gets reflected back to the human eye.
This is why the ocean seems blue.
In other words, the color of water as seen by the human eye is a result of how light interacts with water.
Blue Ocean & Clear Bathtub Water
The color of water can seem very different depending on distance, too. A bathtub or glass full of water always looks clear, letting you see your reflection. This is because it is being viewed over a short distance. Actually, a glass of water is slightly blue. In fact, if the volume of water was sufficiently large, it would appear blue. Depending on the water source. the color of water is not always the same. In deep water, the water looks dark blue or bluish
Light Spectrum When light comes to the Earth from the Sun, the human eye can only see a narrow spectrum of that light. This is called the visible spectrum. The human eye is sensitive to certain colors. When the Sun shines on the ocean, all colors of light enter the water. The yellow and red light is absorbed in the upper portion of the ocean. However, only the green and blue spectrum of light gets reflected back to the human eye. This is why the ocean seems blue. In other words, the color of water as seen by the human eye is a result of how light interacts with water. Blue Ocean & Clear Bathtub Water The color of water can seem very different depending on distance, too. A bathtub or glass full of water always looks clear, letting you see your reflection. This is because it is being viewed over a short distance. Actually, a glass of water is slightly blue. In fact, if the volume of water was sufficiently large, it would appear blue. Depending on the water source. the color of water is not always the same. In deep water, the water looks dark blue or bluish
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