UTF-8What happens when many identical atoms interact?255255204
You have seen that a single atom can emit photons of more than one frequency. Each kind of photon is emitted when the atom makes a transition from a particular initial state to a particular final state. The frequency of the photon is proportional to the difference in energy of the initial and the final state.
The model below has 10 identical atoms in it. Run the model and heat it up so that the atoms bang into one another really hard! When you get enough energy into the system the atoms will begin to use some of that energy to go into excited states, and when they do that they will start to radiate photons.
Run the model and pay attention to the circles on the energy level diagram. How does the energy level diagram change when a photon is emitted?
Here I need to be able to show the atoms in the energy level diagram. They only show up, apparently, when there is more than one type of atom present.
The little circles on the energy level diagram represent atoms. There are 10 circles in all. At first they are all on the bottom line because all the atoms are in the ground state. As more and more atoms get excited the energy level diagram shows more and more circles on the two excited states. Every time a photon is emitted one of those circles moves from an upper state to a lower state.
Run the model again until a blue photon is emitted. Then stop it and run it where the photon is emitted. Take two snapshots -- one just before the photon is emitted, one just after. On each snapshot draw an arrow to the little circle that moves from the top energy state to the middle state.
Note: this can't be done yet because the snapshot doesn't include the energy level diagram.
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