Professor Susskind establishes the mathematical foundation for solving the equations of motion for strings. Breaking a string into discrete mass points, he substitutes a Fourier series for the position, generating a set of independent solutions. Dirichlet and Neumann boundary conditions are explained and connected to open and closed strings.
- Dirichlet and Neumann boundary conditions
- Fourier series
- The open string
- The energy levels (excitations) of a string