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Feb 12, 2015 at 11:08 history edited Ray Kay CC BY-SA 3.0
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Jan 27, 2015 at 5:15 vote accept Ray Kay
Jan 23, 2015 at 8:50 answer added orion timeline score: 3
Jan 23, 2015 at 8:24 history tweeted twitter.com/#!/StackPhysics/status/558540720215441408
Jan 23, 2015 at 3:47 answer added VAF0129 timeline score: 11
Jan 23, 2015 at 3:39 comment added paisanco @dmckee, right you are, just trying to find a starting point for the OP's desired level of discussion.
Jan 23, 2015 at 3:33 comment added dmckee --- ex-moderator kitten @paisanco is on the right road, of course, but as a practical matter it is done using multiple-slit devices (i.e. diffraction gratings).
Jan 23, 2015 at 2:57 comment added paisanco I'd probably start by asking if you know of single slit diffraction and if so whether you find that convincing evidence that wavelength is measurable, or need more evidence. It's a little unclear specifically what evidence you're looking for.
Jan 23, 2015 at 2:52 comment added Earth is a Spoon If you have problem with determining wavelengths by gas glow, of course, you should see how those Quantum Mechanics theories came into existence.
Jan 23, 2015 at 2:28 history asked Ray Kay CC BY-SA 3.0