Electromagnetic Spectrum
The good folks at XKCD have done it again. This time they have a fun map of the electromagntic spectrum, which contains many fun elements. Of course I like the fact that Google uses a good chunk of the ζ-rays range for sinisters projects. Somehow I would have added a mysterious signal at 50㎐, the one that baffled so many young electronics students…
tu cite encore et toujours XKCD ^^