Issues

In the fulfillment of a goal envisioned by Gibbs, the laws of thermodynamics have been written in the form of a Euclidian metric geometry; its formulas can be read off from simple diagrams.

Because particle number is not conserved in high‐energy interactions it may be meaningless to ask about the constituent parts of elementary particles; perhaps the central problem is dynamics.

While they share many of the properties of negative electrons, positrons exhibit other phenomena—such as annihilation or positronium formation in collisions with atoms or molecules—that are all their own.