What is the difference between the primary Colours of light and the primary Colours of paint?

In color theory, you have “additive color” and “subtractive color.” Light is additive color: You add colors to get to white. Your “Primary colors” from which you get all other colors are Red, Green, and Blue. When you blend red, green, and blue light, you see the appearance of white light.

Why do different Colours have different wavelengths?

We see different wavelengths of light as different colors because they are associated to different wavelength, which activates different cells in the retina. You can try to answer the question from another perspective, such as why a red surface is red, but that is another story.

How do different frequencies affect light?

The amount of energy in a light wave is proportionally related to its frequency: High frequency light has high energy; low frequency light has low energy. So, gamma rays have the most energy (part of what makes them so dangerous to humans), and radio waves have the least.

Why do different colors of light correspond to different light frequencies?

Due to the various frequencies of light we can see different colors as a result of the light reflecting or refracting off surfaces or through different media (air, water, transparent solids). The effect of different light frequencies on our minds is like the different sounds we hear as frequencies change.

What determines the colour of light frequency or wavelength?

Color is not directly determined by wavelength, but rather by frequency. (The wavelength of light varies, depending on the medium through which it passes, but the frequency does not.)

Does the frequency of light change in different mediums?

When waves travel from one medium to another the frequency never changes. As waves travel into the denser medium, they slow down and wavelength decreases. The wave is slower but the wavelength is shorter meaning frequency remains the same.

Do different colors have different frequencies?

Different colors have different wavelengths just as you say, but all colored light moves at the same speed in vacuum; its frequency depends on the relationship between speed and wavelength.

Do different Colours have different wavelengths?

Each colour has a different wavelength. Red has the longest wavelength, and violet has the shortest wavelength. When all the waves are seen together, they make white light. White light is actually made of all of the colours of the rainbow because it contains all wavelengths, and it is described as polychromatic light.

https://www.youtube.com/watch?v=T8-aqYwdvW4