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Re: [Phys-l] electrons and light

Maybe he's thinking of from line spectra in which case comparing neon and hydrogen would seem to indicate yes *. LK is exactly correct in the case of, say, lab black body emitters, i.e. absolutely everything emits the same at the same temp. OTOH the emissivity of various elements varies widely and w/ temp. when in plate or cylindrical (wires) form.

* permitted transitions, and the excitation energy of the various levels makes this not a simple relationship.


Ludwik Kowalski wrote:

On Sep 28, 2006, at 6:13 PM, adrian sears wrote:

Do elements containing more electrons emit light of
greater intensity because more electrons are excited.

Many elements with very different numbers of electrons per atom emit nearly as much light, at the same temperature, as an ideal black body radiator. On that basis I would say that the number electrons per atom is not an important parameter. The main parameter is temperature.

Ludwik Kowalski
Let the perfect not be the enemy of the good.
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