Poynting vector

The Poynting Vector is a concept in physics that describes how energy flows in electromagnetic fields, like those from light or radio waves. It represents the directional energy flux, indicating how much energy is carried per unit area in a specific direction. Essentially, if you visualize the flow of energy from a light source, the Poynting Vector shows how that energy travels through space. Mathematically, it combines electric and magnetic fields to give a clear picture of energy transfer in various scenarios, such as in antennas or during solar radiation.