Second image in a set of illustrations I'm working on to make astronomy interesting to middle school students (and their parents), while connecting it to broader concepts (e.g., the rf spectrum and visible light's place within). (Part 1 illustrates the size and shape of the phoebe ring.)
I have two print references on the RF spectrum. One shows shorter wavelengths to the left; the other, to the right. I suspect Gamma-left/radio-right is the standard, but am curious to know if there is a standard.