• What is a variable?

    Watch this video to find out!

  • The Buoyant Force

    This post is about the buoyant force and the Archimedes principle.

  • Notes on Section 1, The need for a quantum theory

    Paul Dirac wrote a book called “The Principles of Quantum Mechanics.” It is a very logical book with later sections depending on earlier sections. I have only read bits and pieces of this book, but now I going to embark on the challenging task of reading it chronologically while keeping a critical eye. In addition…