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Infinite number?

by massa (Hermit)
on Feb 03, 2009 at 16:10 UTC ( #741035=note: print w/ replies, xml ) Need Help??


in reply to Re^3: How many colors does a rainbow have?
in thread How many colors does a rainbow have?

Shouldn't wavelenghts be multiples of the Planck length?

[]s, HTH, Massa (κς,πμ,πλ)


Comment on Infinite number?
Re: Infinite number?
by moritz (Cardinal) on Feb 03, 2009 at 16:16 UTC
    Now I'm seriously curious - why should they?

    So far I've never worked with energy scales where quantization of that order of magnitude would matter (10^-9 vs. 10^-35 meter), so I'm curious where that comes from.

      IANAPhycisist. That said, I was under the impression that there were no wavelengths smaller than ℓP. This may or may not have anything to do with the subject in question and, to add full disclosure, I am not renowned for my mental sanity.
      []s, HTH, Massa (κς,πμ,πλ)
        IAPhyscisit, and so far the various spectra have looked pretty continuous to me. That's mainly because in an electric or magnetic field, the spectral lines can be fuzzed in continuous steps. Of course that's just an approximation, because in that case we assume that electromagnetic fields are continuous themselves - which they aren't in second quantization.

        My current education doesn't allow me to give more fundamental statements about it, I was just curious if there's a simple argument of which quantization in steps of the Planck length falls out.

        But I guess we're way too far off-topic by now...

Re: Infinite number?
by tilly (Archbishop) on Feb 03, 2009 at 17:00 UTC
    I believe we would need a better theory of quantum gravity to confirm or deny such speculation.

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