Do colors really exist?

Question

One can argue that colors really do not exist but it is a pseudo image formed by our brain for a certain frequency of light.
For all you know what I see as green you may be seeing as blue.

I am reading the answers and no one seems to get the concept. This is a Physics question, not a medical question please.

Ali seems to have got the idea. Colors of light are as pseudo as a isobar map of the world. In an isobar map we divide different atm pressure and give them colors for reference. The colors we see are also different frequencies of light only perceived by me. I do not know and can never know how anybody else perceives the same color, unless I get into his brain.

Answer 1

You have a point. I think colors are part of our visual perception and should not be refereed to as an intrinsic property of light existing independently from our visual sensory receptors (eyes).

Answer 2

Light is defined by its frequency. It can be argued, quite reasonable, that the term colour is not a scientific one, although one used often by scientists.

Our perception of the different frequencies of light is down to the reaction of the different cone cells in our eyes and can be tricked. A television only emits three colours, but we perceive that it can produce any colour (unless we get very close to the screen and see the individual pixels).

The names we give to the different colours are simply a convention that has been adhered to over centuries. In that respect, what appears green to you will appear green to everyone else provided they also adhere to the convention. Even where they don't adhere to the convention, they will still be consistent in their descriptions (if you decide that grass is blue then tree leaves will also be blue for example)

The one exception to this is people who are colour blind. In this case some or all of the cones are not functioning correctly and the perception of colour is genuinely different.

Answer 3

Yes of course. Light with certain frequency can be considered as a color. Green or blue is just how your eyes are affected by that light, whereas the light still has its color!

Answer 4

Ye coloures really exist. The rods and cones in our eye are responsible for knowing colours and brightness of the objects. The colours what u were seeing may be somewhat dull or bright to me but maximum times it will be the same and unless u have a color-blindness it wont happen. OK!

Answer 5

Colour is a concept. It exists in our cognition/brain regulated by the special property of the retinal material (cones)and colour interpreting centres of our brain in a general way. Some abnormal people may not be able to perform this cognition because of some biological defects either in retina or in brain. So colour as a concept exists in relation to coloured light emitted by self-luminos objects like sodium light, rising or setting sun, and non luminous objects like roses and tree leaves, and fruits which show their characteristic colour only in white light; in other coloured light or in no light they will appear differently coloured or dark respectively.

Answer 6

That's more a biological question really isn't it. But what if I pulled your eyes out, how would you interpret the frequencies of light then? would they still exist?
Try to seperate senses from reality too, oh you can't, no one can that's right.

Read a bit of Descartes for that sort of thing.

Answer 7

Colors are exist. But Not more colors.
Some colors mixing Ratio creates more colors.

Answer 8

yes they do.

this question is like ,, does health exist ?
yes it exists when someone is not sick

Answer 9

No they don't, but colours do.