2
$\begingroup$

Suppose I've retrieved spectral line data for an element, as so:

hydrogenSpectralLines =SpectralLineData[EntityClass["AtomicLine", {"Hydrogen", 1}]];

From that, I can extract only the visible lines, and their frequencies, using

EntityValue[x,EntityProperty["AtomicLine", "Frequency"]]

So in the end I guess what I have are really just a bunch of "Quantity" objects.

So, I've filtered for just the visible ones, and I want to visualize them as they might appear if I actually put a camera in a spectrometer. Like this image from Wikipedia, made by Jan Homann:

example

Should I just use Rectangle objects, or is there a "higher-level" way to approach this?

$\endgroup$
3
$\begingroup$

There is an example for that for SpectralLineData: here.

hydrogenSpectralLines = 
  SpectralLineData[
   EntityClass[
    "AtomicLine", {"Hydrogen", 1}], {Quantity[400, "Nanometers"], 
    Quantity[750, "Nanometers"]}];

hydrogenLineLengths = 
  QuantityMagnitude[
   SpectralLineData[hydrogenSpectralLines, "Wavelength"], 
   "Nanometers"];

Graphics[{ColorData["VisibleSpectrum"][#], Line[{{#, 0}, {#, 1}}]} & /@
   hydrogenLineLengths, Frame -> True, FrameTicks -> {True, False}, 
 AspectRatio -> 1/3, Background -> Black, 
 FrameLabel -> Quantity[None, "Nanometers"]]

hydrogen spectral lines

| improve this answer | |
$\endgroup$
  • $\begingroup$ Oops, right in the help file! Thanks for pointing this out. $\endgroup$ – user54038 Apr 17 at 13:44

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.