water has no color of its own , then why does the small part of cloth soaked in water looks darker ?
344786
color is a phenomenon when the dye in the clothes absorbes light, the molecule becomes excited to a higher energy level, back to ground state, and a different color light is emmitted. \n\nI'm thinking since the color just looks "darker" without any change in the spectrum. that means you only get a decrease in intensity (fewer photons). so water may have a quenching effect for the flourescence of the dye when it's close to the dye molecule. that way many emmitted photon is quickly quenched by the water molecule and fewer are allowed to escape and be seen so the color looks darker.
140410
Not sure what you mean: a transparent substance that, when cut/sliced/whatever, will display coloration?\n\nDue to a chemical reaction with the atmosphere? Try a gelatinous material with a fugitive acid and phenolphtalein. As the acid evaporates, the pH will rise beyond the equilibrium of phenolphtalein. (Or some other indicator changing from colorless to colored, closer to neutral.)\n\n\nSometimes coloration can result from surface structure rather than dyes: the brilliant blue butterfly wings of some South-American species result from nano-structures eliminating all non-blue light. Assuming that your substance  is connected by a liquid of similar refractory index, the surface effect will only occur once the surface is hurt and the liquid is allowed to dry away.
492244
I think I heard this answered before somewhere. If I remember corretly it's that the amount of coloured pigment in the soap is tiny. When 'foamed up' the actual foam is only a few microns thick...so thin that the colour pigment (which was a small % in the first place) can't be seen?
18938
The sea is mostly salt water with suspended organisms and minerals.\n\nUnless the organisms carry a lot of pigments, there will be no specific absorption of colour. Instead, you will have unspecific absorption by particles. In this case, light on the red (low wavelength) side of the spectrum will be absorbed more than light on the blue side.\n\nYou can check this at home: pour a little milk into a glass of water so that it still remains mostly transparent and hold it against a conventional lightbulb. The glass content will appear slightly blueish.\n\nThe amount of absorption is dependent on the thickness of the layer. The more impure water there is, the bluer/blacker it will appear.
231058
Light hits water droplets and gets divided into seperate colors like the prism effect.
7107
Well mostly the difference in colour of the oceans is due to the muddy and unclear waters. no waters have colour. But it is just the colour of reflection. Please see the site i am listing below. It is a q & a type forum only!!\n\n\nYou may get your answer here too!!\n\nWe see the water  great masses, seas, lakes, rivers, with colors: blue,  green, gray, \nsometimes brownish. But if one picks up a pot of that water the aspect is not colored.  \nSo the color is an optical phenomenon that is observed only when a large volume of water \nis considered and it depends on several things:\n-The water reflects the sky, so its color depends upon the sky colour at that time, and if \nit has white or grayish clouds.\n-At other hand  the water colour depends also from the material that is found  mostly into \nthe sea  water.\nThere are life there…animal and vegetal, a lot,included the  phytoplankton, microscopic \nplants that either float or are suspended there.  And of course there are  dissolved and \nsuspended also inorganic and organic matter coming from the sea floor and from rocks.   \nColor is the result of  optical interactions from the incident  solar light and the \nbillions of microscopic particles present.\nWhen the light of the sun reaches the sea surface different phenomena happen, part is \nreflected, part is absorbed and some is scattered. These phenomena happens with the water \nitself, the dissolved organic and inorganic matter and the suspended particles.\nThe colour of sea water depends upon  the distribution of these facts. It is blue for clear \nocean water and shifts to darker for less transparent or more turbid waters, and depends \nalso from the depth and transparency of the considered layer of water. And that colour can \nbe seen from space! That is why our planet Earth is called the "blue planet". Isn´t that \nwonderful?\nAnd thanks for asking NEWTON!
52478
When light is refracted off of droplets of water it enables you to see all the colors that make up white light (sunlight, even light from bulbs.) creating what people more commonly refer to as a rainbow. \n  Go outside on a sunny day and spray the waterhose if you have one. If you look very carefully, you can see that the rainbow you created is not just a semi-circle, but a full circle! The bottom half is harder to see, but it is there. The reason rainbows don't look like that when we see them outside is because we are too low to the ground to see the rest.
682281
not really sure why, but if you let air get to vanilla, it turns to a darker color. so it probably has some kind of preservative in it making it that way...( just a guess)
744212
take a dark colored cloth and a light colored cloth.expose them to heat or sunlight.u will see that dark colors get hot very quickly than light colored cloth.switch off the source and u will see that the heat is quickly lost by dark cloth than light cloth.
160590
The color may eventually get whitened due to dehydration , or may get blackened due to addition of dust particles
918278
Without light you cannot see anything.\n\nWhy?\nBecause the light (which is consist of the colors (V I B G Y O R)\nstrikes an object. Depending upon the object, the light may or may not reflect some of the colors.\n\nWhen an object reflects some light, the object will then have a color.\nFor example, if the object absorbs all the color from the light except red, the red will be reflected to your eyes. This will make you see the color red.\nThat is, a red rose is color red because it reflects rhe color and it goes to your eyes. So you see color red.\n\nWhen an object reflects all light ( none of the color was absorb), then the object will appear white (that is the combinatio of all the colors).\n\nWhen an object reflect only green and blue, the object will appear to your eyes as cyan (correct me if I'm wrong, coz if I'm not mistaken, the combination of green and blue is cyan).\n\nThose object which absorbs all the color that composed the light appears black.\nBecause no light is bouncing back and go to your eyes.\nAnd we all know that black is the absence of any color.
1064994
Perceived colour is dependent on the light wavelengths being reflected back to your eyes. What's reflected changes according to depth, substrate (if it's shallow enough to see the substrate) turbidity (as in mud and organic junk and whatever else affecting the clarity of the water), biological content (i.e. high levels of phytoplankton can make water appear very green, and shallow tropical areas with very little plankton can appear bright blue, etc).
590116
When light falls onto an object a part of the spectrum is reflected and another part is absorbed. Depending on the (micro)texture of the object, different parts of the spectrum are reflected and we sense another color. Since there is a differennce in microtexture between wet and dry clothes, we experience a slightly different color.
26465
Sunlight is made up of all the colors of the rainbow: red, orange, yellow, green, blue, and violet. Some of the sunlight is reflected off the surface of the water, reflecting the color of the sky. Some of the sunlight penetrates the water and is scattered by ripples and particles in the water (this tinges the appearance of the ocean with the color of the particles). In deep water, much of the sunlight is scattered by the oxygen in the water, and this scatters more of the blue light.
72663
Its a cute question. :-)\nLet me explain it this way.\n\nShadows arent necessarily objects themselves. \nThey are just a patch of surface, which dont recieve direct light from the source (sun, lamp etc), but only recieve the scattered rays of light. \nAnd for this reason, these patches are dimly lit, making it look darker than the surrounding, which in our daily terms is 'black'. :-)
1114808
Water refracts light, which changes the appearance of gthings in it.\nTake a stick, and poke it into a bath of water at a 45 degree angle.\nLook at the stick from an angle, and you will see a serious "kink" in the stick, when you know it is straight.
9737
The water makes it harder for light to reach the fabric. Kind of like when you look at the ocean and the water is a dark blue the farther out you look.