👉 Propagulum is a concept used in physics and mathematics to describe the movement of electrically charged particles. It is often used in connection with electromagnetic waves, such as radio and microwaves, which are generated by moving charges like electrons or protons. Propagation of these waves occurs through the medium between two points, called "sources" and "radiators," where the wave can propagate from one point to another without being reflected back. The propagation speed of a propagulum depends on its material
