All Questions
58
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
6
votes
2
answers
2k
views
Wavelength of "complementary colours"?
In physics/chemistry/the life sciences there's a common experimental method of determining the concentration of a sample using spectrophotometers. We can measure the absorbance of the sample at a ...
- 687
0
votes
2
answers
47
views
Is reflected color not from the wavelength corresponding to that color?
I was reading through Josef Albers' interaction of color (a classical art color theory book), where he makes this point:
If I see a substance, or pigment of a particular color, doesn't that mean I'm ...
- 1,096
0
votes
0
answers
68
views
Derivation of optical resolution
I'm trying to prove optical resolution formula from scratch and im having a hard time doing it. I dont know much about optics (im studying cosmology) and i need a detailed proof of optical resolution ...
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
1
vote
3
answers
72
views
Wavelengths of light outside our solar system
The question might have been asked before. Our Sun's rays decompose into 7 elementary colors by using a prism or spectrometry. Can the the colors (their number and wave length in the spectrum ) be ...
- 1,032
1
vote
2
answers
554
views
Does refraction depend on the colour of light?
Consider passing red and yellow lights separately through the same interfaces and with the same angles of incidence.
Light of which colour will be refracted more?
This question was given to me. All I ...
- 119
3
votes
3
answers
741
views
Why can’t we see atoms in an optical microscope?
I know, the answer to this question may seem obvious: The resolution/magnification of an optical microscope is limited by the minimum wavelength one uses. This is due to the diffraction limit.
However,...
- 469
0
votes
1
answer
51
views
Light in glass/water
When light enters water, the light changes their direction because they only use 75% of their speed in water, because the interactions with the electrons, the wavelength of the photon changes. We SEE ...
0
votes
1
answer
213
views
Physical problem with Fourier transformation by diffraction at a slit?
It is well known (and observed experimentally every time) that after passing through a slit the light doesn't change its wavelength. From the other side it is also well known that when the light ...
- 651
0
votes
2
answers
360
views
What is the wavelength of white light? [closed]
Does white light have a wavelength, and I know that the sun emits white light, but the atmosphere makes it refract to make it appear yellow to us. Do all the stars in the universe emit white light?
52
votes
4
answers
7k
views
What wavelengths of light does a banana reflect?
I do know that there are at least two types of yellow light: a light of a single wavelength of ~580 nm and a combination of green light and red light. (Technically, there could be more yellow light.) ...
- 723
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
20
votes
8
answers
5k
views
What does the "true" visible light spectrum look like? [closed]
When I google "visible light spectrum", I get essentially the same image. However, in each of them the "width" of any given color is different.
What does the "true" ...
- 337