All Questions
12
questions
3
votes
2
answers
232
views
How could RGB color system compose a violet color?
In the GRB system, we combine the three primary colors, red, green, and blue, to make some new colors.
It's easy to understand the production of yellow because the wavelength of yellow is between red ...
- 141
1
vote
0
answers
71
views
Does our sense of color depend on frequency of source or the wavelength of light?
I was taught that the colors we see are results of the corresponding wavelength, but each wavelength also has a distinct frequency since speed of light is fixed for a specific medium (same goes for ...
- 169
0
votes
2
answers
117
views
Sunlight colour
I know the sunlight is white colour and appears yellow because of dispersion through atmosphere.
I want to know why this yellow light when pass through prism divided into 7 colours.
4
votes
2
answers
192
views
How were the RGB Color Matching Functions established from 380 to 436 nm?
I have been reviewing how RGB color matching functions were formed, and I seem to be missing an aspect. The three primary monochrome lights used to generate a color like the target color are roughly ...
- 43
22
votes
3
answers
4k
views
Can you create white light by combining cyan wavelengths (490-520nm) with red wavelengths (630-700nm)?
Cyan (blue light + green light) + red light = white light,
but is the same true for cyan wavelengths ($490-520$ nm) and red wavelengths ($630-700$ nm)?
- 309
27
votes
9
answers
8k
views
What determines whether colors you can't see are visible or not?
So, when someone is red-green colorblind, the colors appear the same to them, like this:
Source: https://iristech.co/what-do-colorblind-people-see/
And if you're totally colorblind, then things ...
- 397
1
vote
4
answers
2k
views
Is there 100% pure white? [duplicate]
Is it possible to have an object 100% pure white without sky blue or sun color tinting the pure whiteness of the photons reflecting/deflecting off an object? Are there any lights that can produce pure ...
- 113
-1
votes
1
answer
881
views
How Negative Color Value is accepted in Tristimulus Values for Mixing Colors?
I read a chapter about Trichromatic Theory of Color Mixture (Yao Wang, et all. 2001), about how we can produce most colors by mixing 3 primary colors. And the amount of three primary colors required ...
- 109
17
votes
2
answers
10k
views
What is Gray, from a physics POV?
Quora explains how white and black colors fit into the spectrum of visible light. It explains that white is all colors together while black is the lack of color.
So, where is Gray? Gray is the mix of ...
- 2,918
4
votes
2
answers
465
views
Different degrees of freedom with RGB, CMYK and Frequency
Ok, so I understand the eye has 3 different types of receptors and I've seen the process of converting from RGB to CMYK. However if in physics I can specify a color using a single number (its ...
- 41
2
votes
1
answer
164
views
Is there a one-to-one relationship between colour theories and our trichromatic vision?
This has started to bug me more and more… it involves:
colour theory
the trichromatic properties of our eyes through cone cells
and light.
Is there a one-to-one relationship between colour theories ...
- 123
68
votes
12
answers
34k
views
Is it possible that there is a color our human eye can't see?
Is it possible that there's a color that our eye couldn't see? Like all of us are color blind to it.
If there is, is it possible to detect/identify it?
- 839