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Atomic, nuclear and particles

This image is a representation of the Standard Model, probably the closest thing we have to a theory of everything, well, everything we know about.

  • Why are solids solid when atoms are mostly empty space?
  • What are the fundamental forces of nature?
  • Why hasn't a single quark ever been observed?
  • Why does releasing energy make a nucleus more stable?


  • The structure of matter

    A complex story with a simple ending. A good example of Occam´s razor, the simplest is most likely to be the correct solution, very convenient for physics students.

  • Nuclear physics

    Most of this topic is based on an understanding of the BE/nucleon vs nucleon graph but to understand that you have to understand binding energy....

  • Particle interactions

     Particle interactions can be represented by these neat diagrams governed by simple rules. One in one out, 2 straight one wiggly.

  • Binding Energy

     Binding energy is often wrongly defined as the energy that holds a nucleus together. The nucleus is held together by the nuclear force. BE is the energy require to separate the nucleons. BE is not possessed by the nucleus it was released when the nucle

  • Fission

    The basic principle behind the working of a nuclear power station. There will be more about this later.

  • Exponential decay

     An interesting link to maths. How the fact that if the rate of change of something is proportional to the quantity itself then the change is exponential.