Each section of the spectrum corresponds to a color-coded section in the bottom area.
You can learn all about the properties, uses, and effects of each type of electromagnetic wave.
It covers everything from simple diffraction to the
effects of cosmic rays.
It's an amazing artifact of scientific education, complete with images of retro radio equipment, hospital radium rays and one of the first commercially
available television set.
Though the chart never sold as well to high schools as the earlier periodic table chart, it was a big hit with colleges and laboratories.
Glimpses of it can often be seen in the backgrounds of educational films and even Hollywood films
like Steve Martin's The Man With Two Brains and Disney's The Computer Wore Tennis Shoes.