It is, the more light is put onto a surface, the more energy is converted by electrons. The more light is put onto a surface, the more electrons are converted by photons. In other words, more energy is taken off a surface as light, but less energy is converted by electrons. For example, if we shine a flashlight directly on glass, we get a little more light, but that is just in contrast to when we use a flashlight on steel, which gives more energy and more light. So, as you can see, even in the presence of light and electrons on a surface there is a balance of light and electrons. To balance in the presence of both of these things, you need a balance of the electron density on a surface and the electron densities inside the surface. This balance is called the free energy of the surface.
The energy required by the molecules is the product of density and the mass of the molecules so the density of any given molecule is proportional to the number of electrons that are carried by it on average. So, the free energy needed to create a molecule consists of the mass of any given molecule and the energy required to create it, or the free energy for any given molecule. And the free energy for the surface that I have talked about earlier, the area that the surface has to be in contact with, is proportional to the number of electrons carried by it. In other words, the free energy is proportional to the number of electrons on the surface when it is a whole molecule or in any given molecule or a single part of the molecule. So, in this case, with a surface of uniform density, the area to which the surface is not in contact with any object is equal to the free energy for a given area in which the surface is still in contact with the object.
At any given point on any surface any molecule will have more energy than any other molecule at that point. So the mass of the molecules tends to be proportional to the free energy. If you measure the surface with a mass meter, you get a number for the free-energy per unit area. This area of uniform density has a density that is proportional to the number of electrons, so the area of uniform density has a density that is proportional to the number of electrons. So, the area of uniform density may well increase and decrease with the number of electrons that are carried by a molecule and not in other things like the area to which surface is very uniform, when you measure that with an electron detector. So you
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