I'm really glad you can join us today this is going to be a very important show because as we mentioned in the last show, how important being little make colors is you won't spend so much time fighting colors that aren't coming out the way you're wanting them to. So maybe you take a couple minutes and watch this while I get my pants ready for this painting. Today we start by visiting our friend Adam wrench store. He's someone who knows a lot about why different materials look the cause that they do. And all artists have a good understanding of why arcane pigments change color after they're mixed together. And in order to do that, it all starts with the colors in light.
What we're doing is showing how white light is actually composed of all the colors in the visible spectrum, just like Isaac Newton Way back when instead of using a prism, which is visually maybe more striking, we're usually using what's called a diffraction grading, which is essentially just a clear piece of plastic with very thin, very finely spaced lines etched into it. And it causes the light to diffract. You get the same responses with the prism. So you can stare nice beam of white light. If you put the diffraction grating in front of it. You get a spectrum off to the side and not all of the light is diffracted some passes straight through the diffraction grading, you still see the unreflective beam.
Then off to the left, you have a fraction of the the original light spread into the colors of the rainbow and it's all electromagnetic radiation. The only difference between red light purple light and yellow light is the amount of energy each individual little bundle of light each photon carry. Or you could also consider the wavelength of the light or the frequency of oscillation is the red light having longer wavelength, and the blue and the violet and having shorter wavelength. But that's it. photons are essentially identical particles they all travel through the universe at the speed of light. difference.
The energy differences in energy which our eyes perceive as differences in color. mixing colors of paint is a destructive or subtractive process, and mixing the complimentary cars makes black. On the other hand, mixing cars of light is an additive process. So we asked Adam, what happens when we mix complementary cars of light. If you take say red, and then the complement, green and blue together make your cyan so if you have the exact right colors and wavelengths, you're talking about red and its complement cyan and added together would also make a white light source. Let's try and make some blue and yellow light together.
As we can see it's an additive process. Unlike or paints, it turns more white and not green.