Re: If position and time is uncertain then how do they know electron/photon occupy both simultaneously?
- From: Hayek <hayektt@xxxxxxxxxxxxxxxx>
- Date: Fri, 29 Jun 2007 16:59:32 +0200
guskz@xxxxxxxxxxx wrote:
If position and time is uncertain (Uncertainty Principle) then how do
they know that two electron or two photons can occupy the same place
and time simultaneously?
Photons do not occupy places around the atoms nucleus.
But the atom accepts and emits photons, but only at very determined frequencies or energies which in photon terms is exactly the same.
By studying these energies, one can see that the positions of the two lower electrons, are about the same.
One can not really talk about "positions" of electrons around atoms, as they are present in a "probability cloud" or "orbital", the only thing that one can say, is that by hitting the atom with a photon of a certain frequency, one can kick an electron to a "higher" orbital, the photon gets absorbed by this process, which lasts only a very short time, and the electron returns to its lower orbital, hereby emitting a photon of the same frequency as the absorbed original. There are many higher orbitals, each with a corresponding energy and even an "ionization" energy, which totally removes the electron from the atom. This part of physics is also called spectroscopy, as for photons, frequencies and energies are equivalent.
Uwe Hayek.
.
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