Photon is different from an eletron

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Discussion Overview

The discussion revolves around the differences between photons and electrons, particularly in the context of energy state transitions in atoms. Participants explore the nature of photons, their role in energy absorption and emission during electron transitions, and the implications of these processes on atomic structure.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions the possibility of calculating the lifetime of a photon emitted or absorbed during an electron's transition between energy states.
  • Another participant emphasizes that when an electron changes energy states, it is the entire atom that absorbs or emits a photon, not just the electron, highlighting the discrete energy levels due to atomic interactions.
  • A participant seeks clarification on the nature of the photon, asking whether it represents an energy distribution or a force applied to change the energy distribution within the atom.
  • It is noted that a photon is a form of electromagnetic energy with momentum, and its absorption or emission results in changes to the energy and angular momentum of the electron and the atom as a whole.
  • One participant provides an analogy involving the moon gaining mass to illustrate changes in energy and momentum within a system when a photon is involved.

Areas of Agreement / Disagreement

Participants express differing views on the nature of photons and their role in atomic transitions, with no consensus reached on the specifics of photon characteristics or the implications of electron transitions.

Contextual Notes

Some assumptions about the nature of photons and the mechanics of electron transitions remain unaddressed, and the discussion does not resolve the complexities surrounding these concepts.

Ngom
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Dear,
"when an electron jump from one state to an other one it does absorb or emmet an photon", For that it is not possible to caculate the life time of that photon? does anyone have any idea about the time that an electron can do by jumping from one state to an other one.
 
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Ngom said:
Dear,
"when an electron jump from one state to an other one it does absorb or emmet an photon", For that it is not possible to caculate the life time of that photon? does anyone have any idea about the time that an electron can do by jumping from one state to an other one.

When, in an atom, an electron changes energy state because the atom gets excited, a photon can be absorbed/emitted. You should realize that, in this situation of atoms getting excited, the entire atom absorbs the photon and NOT just the electron. As a matter of fact, a free electron has a continuous energy distribution so clearly, the "jumping" you are referring to is not possible if we were just talking about an electron. Due to the fact that the electron is inside an atom, the energy levels of this electron are determined by its interaction with other electron and the atomic nucleus. In the latter case, the electronic energy distribution is discrete yielding the energy levels you are talking about.

marlon
 
right but when an atome change a energy state it emmeted or absord a photon it means that the distribution of the electron inside the atom have change, so what i am asking is that that photon what is it exactly, it is a kind of energy ditribution or it is a force that have been applied to change the energy distribution inside the atom.
 
A photon is a form of energy (electromagnetic). It has no rest mass, but does possesses momentum, p = E/c, where E is the photon's energy.

Electron(s) and the nucleus form a system we call an atom. When an atom absorbs a photon, the energy and angular momentum of the electron changes (increases) within the atom and consequently the energy/angular momentum of the system changes. When a photon is emitted the energy and angular momentum decrease.

A photon imparts a force to an electron, by virtue of changing the momentum and energy of the electron. The electron 'jumps' between discrete (quantized) energy levels.

Crudely, if the moon were to gain mass (e.g. by a collision with a large mass), the moon's energy and momentum would change, and so would the energy/momentum of the earth/moon system change.
 
thank for your reply
 

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