why pure water does not have colour ?

Question

pure water being like transperent..has no color..it looks like color of its background"s color..why?

Answer 1

Transparency is about the electromagnetic dynamics of an object and wavelength of the photonic energy being absorbed by the object in a function with the optics of your eyes and nervous system. Only a vacuum is truly transparent. Pure water, although apparently transparent to the optical limitations of our eyes, does have a measurable and oftentimes visible color:
http://en.wikipedia.org/wiki/Color_of_water

From Wikipedia's entry for water:
Color
Water strongly absorbs infrared radiation. As infrared radiation is next to red-colored light on the EM spectrum, a small amount of visible red light is absorbed as well.This results in pure water appearing slightly blue when seen in mass quantities such as a lake or ocean. The blue color can easily be seen as one sees the blue color of the sea or a clear lake under an overcast sky, which means that it is not a reflection of the sky. In practice, the color of water can vary greatly, depending on impurities. Limestone turns bodies of water turquoise, while iron compounds turn it red/brown and copper compounds create an intense blue. Algae commonly colors water green.

Answer 2

Water strongly absorbs infrared radiation. As infrared radiation is next to red-colored light on the EM spectrum, a small amount of visible red light is absorbed as well.This results in pure water appearing slightly blue when seen in mass quantities such as a lake or ocean. The blue color can easily be seen as one sees the blue color of the sea or a clear lake under an overcast sky, which means that it is not a reflection of the sky. In practice, the color of water can vary greatly, depending on impurities. Limestone turns bodies of water turquoise, while iron compounds turn it red/brown and copper compounds create an intense blue. Algae commonly colors water green.

Answer 3

A liquid seems colored when its molecules absorbs light A good example is chlorophyll which seems green since this molecule absorbs red light which is the complementary color of green.
Pure water does not absorb any visible light. Truly speaking it absorbs but in very small amount so you must go to the bottom of ocean to notice the fact.
But water absorbs infra red light. If our eye would be sensible to infra red , you would notice that water is not transparent

Answer 4

Because water is a substance that is transparent. Light passes into it and we can see colors above it. Those spectrum of colors are what you see beneath. Therefore it takes the color of it's background.

Answer 5

Clear

Answer 6

Water that doesn't have any thing in it, or suspended in it doesn't reflect. If it doesn't reflect, you only see what light goes through the water bounces off what is on the other side and through the water again to your eye.

Answer 7

colour is generated by reflexion of ratios of white light in the visible region of the light spectrum, but water molecules are not affected by white light hence no color is observed

Answer 8

well actually it is blue when the correct beam of white light is shone through it

Answer 9

hydrogen and oxygen are colorless

Answer 10

because we evolved from fish, and fish evolved in water.