LEDs

Can an LED emit more than one wavelength of light?
Thanks.

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The White LEDs must do so.
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On Sun, 3 Aug 2014 15:41:32 +0100, "gareth"

There is still only one color per junction as far as I know. They use multiple junctions to get multiple colors.
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     snipped-for-privacy@aol.com writes:

or just a blue LED and phosphors to generate the longer wavelength colors.
--
Andrew Gabriel
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You learn something every day!
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This pretty much explains it. http://www.instructables.com/answers/How-do-multi-colored-led-lights-work/
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