Retro electro magnetic spectrum chart is rainbow science geek porn

This awesome old chart color codes and diagrams in one madly chromatic sunrise all the known frequencies (at the time) of the electromagnet spectrum,including everything from the range of the human eye to gamma rays to the transparency of quartz., I've been looking at this thing for an hour, and I still can't believe how much information is packed in here. This is science geek chart porn. The Electromagnetic Spectrum [Copper Alliance via Crunchgear]
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15 Responses to Retro electro magnetic spectrum chart is rainbow science geek porn

  1. strider_mt2k says:

    That’s also an eerily effective graphical representation of what Skittles taste like.

  2. nixiebunny says:

    It’s interesting to see that the portion of the spectrum that I build instruments for is not inhabited at all in this poster. That would be the “rain and fog” portion from 3mm to 0.3mm.

    It turns out that it’s possible (though tricky) to detect particular molecules in the far reaches of the galaxy in this frequency band in spite of the interstellar dust that obscures optical viewing, so these frequencies are used by radio astronomers to discern what’s out there. (Or something like that; I’m an engineer, not an astronomer.)

    If you’re interested…

  3. sorahn says:

    So… Where can I buy it?

  4. notatoad says:

    XKCDs take on the subject

    there’s an interesting thread over at reddit. apparently this is a photograph of a poster that hung over XKCDs bed as a child. it got him interested in science, and directly inspired the comic you linked to.

    and no, you can’t buy it anywhere.

  5. monstrinho_do_biscoito says:

    it’s amazing how small the visible spectrum is.

  6. gwax says:

    Nobody seems to have asked the important question yet: where can I get a huge, printed copy of this to put on my wall?

  7. Anonymous says:

    Of course we should scratch off the section for VHF TV now….

  8. chdunk says:

    goodbye old wallpaper, hello new!

  9. AceJohnny says:

    Ob-link: XKCD’s take on the subject:

  10. chdunk says:

    ok, wait, wtf is “deep therapy”, and why does it overlap with hard gamma rays? what exactly was westinghouse getting up to when they made this?

  11. Sijay says:

    Pretty! Is there a reason I’m missing that it’s designed with the radial distortion, other than “Looks cool?” (which it does, mind you).

    I suppose it allows extra room for the more data-dense spectra further from the center, but is there anything else implied by that sorting?

  12. Chris Tucker says:

    This is the kind of image one would expect to see on a screen in the background of an Original Series Star Trek episode.

    And that I can buy my own copy from The Exploratorium makes me a very happy mutant!

  13. semiotix says:

    Now I feel like an idiot. “Attenuation by rain and fog,” duh, no WONDER my Omnidirectional Death Wave Generator didn’t meet its performance targets!

  14. semiotix says:

    ok, wait, wtf is “deep therapy”, and why does it overlap with hard gamma rays? what exactly was westinghouse getting up to when they made this?

    It’s what it sounds like–therapeutic radiation that penetrates deeply into the body, as opposed to the superficial kind that they’d use to fry tumors on or near the skin. What Westinghouse was up to was manufacturing and selling the machines that generated those rays.

    To the extent that radiotherapy is less horrifying now than when this chart came out, it has to do with more precisely targeting the irradiation and therefore minimizing the collateral damage. But from what I understand (due to research on a cognate subject, so grain of salt) the frequencies used haven’t changed much.

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