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@thebigk • May 11, 2014
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@abrakadabra • May 11, 2014
😁 This question always comes around and triggers a few more questions for me -
1. Why is red red?
2. Can you think of a color you've never seen before?
3. How can you describe a color to someone? -
@micheal-john-l1fIn3 • May 12, 2014
In real world there is no COLOURS, its all our perception.Ankita Katdare😁 This question always comes around and triggers a few more questions for me -
1. Why is red red?
2. Can you think of a color you've never seen before?
3. How can you describe a color to someone?
Main purpose of colours is to differenciate between objects. -
@ramani-VR4O43 • May 12, 2014
It is all a matter of convention. Assuming that we have a set up people with no colour blindness, all that we can say is that we all agree that grass is green. The only requirement is that every time I look at grass it creates the same perception to me as to the others. We all then can agree that grass is green.
The curious thing is that all of us cn see a colour even when modified. Since our brain is conditioned that paper is white, we see pare as white evn when it is seen in a different coloured light. Red for example. We automatically switch on a subtract subroutine that remooves the overlying colour and see the paper as white.
That this is not fool proof can be easily shown. If a piece of blue paper is put on a white paper and the assembly is illuminated with light that is an exact match of the blue of the blue paper both appear white. The subroutine has eliminated the blue of the blue paper making it seen as white. -
@ishan-nohePN • May 13, 2014
Agreed. To you paper appears as 'your white' and grass as 'your green'.
To me, 'your green' may correspond to 'my yellow' and 'your white' may correspond to say 'my pink'. We will never know. The shades will always follow. It is all a matter of convention.
As a matter of fact, I have heard that some animals see things in shades of black and white and birds can see colours in ultra-violet range. Is it true? -
@ramani-VR4O43 • May 13, 2014
You are right. Bees see flowers with priority to where the nectar is.
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Animal vision:
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Another:
<a href="https://webecoist.momtastic.com/2009/01/14/animal-vision-color-detection-and-color-blindness/" target="_blank" rel="nofollow noopener noreferrer">How Do they See? Views Through the Eyes of 7 Animals - WebEcoist</a>