Purple is a really pretty color, I like it! Do you?
I prefer violet to purple. They are similar, but violet has it's own wavelength whereas purple is just a mix of blue and red.
Yeah, they are! Isn't violet more close to the color blue than anything else?
It is :) On the visible spectrum it's between blue and ultraviolet.
Oooo that's pretty cool! I don't know much about ultraviolet though, only ultraviolet rays.
Yeah, UV radiation makes up about 10% of the light from the sun. I wonder what it would look like if we could see it?
Me too! I hope it's really pretty, that's for sure!
Ultraviolet germicidal irradiation
Ultraviolet germicidal irradiation (UVGI) is a disinfection method that uses short-wavelength ultraviolet (UV-C) light to kill or inactivate microorganisms by destroying nucleic acids and disrupting their DNA, leaving them unable to perform vital cellular functions. UVGI is used in a variety of applications, such as food, air, and water purification.
UV-C light is weak at the Earth's surface as the ozone layer of the atmosphere blocks it. UVGI devices can produce strong enough UV-C light
blue, and is usually less saturated than purple.
While the two colors look similar, from the point of view of optics there are important differences. Violet is a spectral color – it occupies its own place at the end of the spectrum of light first identified by Isaac Newton in 1672, and it has its own wavelength (approximately 380–420 nm) – whereas purple is a combination of two spectral colors, red and blue. There is no such thing as the "wavelength of purple light"; it only