A lot of non-quantum waves have discrete allowed values. EM cavities, guitar str...

hovden on Sept 15, 2023 | parent | context | favorite | on: Introduction to Hilbert Space (2022) [pdf]

A lot of non-quantum waves have discrete allowed values. EM cavities, guitar strings, etc. Quantum waves are described by a special wave equation, actually a complex diffusion equation (first order in time, second order spatially).