Why is there a small variation in the spectrum of the same element?

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    Spectrum Uncertainty
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SUMMARY

The discussion centers on the small variations in the spectral lines of the same element, attributed to the uncertainty principle and the wavefunction of electrons. It is established that while the uncertainty principle does lead to minor discrepancies in spectral lines, these variations manifest as line widths rather than significant shifts. The electron's wavefunction is spread out, complicating the notion of precise jumps between energy states. This understanding is crucial for interpreting atomic spectra accurately.

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hav0c
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why doesn't the uncertainty principle lead to small discrepancies in the spectrum of the same element in different situations?
I think that since there is a whole area for the electron to jump from and to and therefore a small range of values of possible jumps for a single shell, so there should be small variations in spectrum.
 
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hav0c said:
why doesn't the uncertainty principle lead to small discrepancies in the spectrum of the same element in different situations?
It does. But remember - the effect is very small. It is noticed it as a line width.

See: http://hyperphysics.phy-astr.gsu.edu/hbase/atomic/broaden.html

I think that since there is a whole area for the electron to jump from and to and therefore a small range of values of possible jumps for a single shell, so there should be small variations in spectrum.
However, it is not useful to think of an electron jumping from a particular area to another particular area - the wavefunction is much more spread out than that.

You can work out the position and momentum wavefunctions when an electron occupies a particular energy eigenstate (shell) and see how they relate to HUP.

See also:
https://www.physicsforums.com/showthread.php?t=516628
 
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