The normal curve, on the other hand, is a family of symmetric curves based on the normal distribution function. The specific dimensions of each normal curve depend on the value of the mean, and ...

But really, the potential energy curve for a mass in a solid should look something like this: Not symmetrical. This means that as the energy of the particle increases, the average distance changes.

Each of these curves has an ordered pair of numbers associated with it, shown at the lower left of the curve. These two numbers determine the type of symmetry and complexity exhibited by the curve, ...