We'd like to use analytics cookies to understand which symbols people look up, so we know what to research next. They are not used for advertising and we set none of them unless you say yes. What we store.
A bold capital S, the direction and rate of energy flow.
Also known as: Poynting vector, Energy flux vector, Bold S
The Poynting vector points where electromagnetic energy is going and says how fast, and it is E crossed with H. Its most counter-intuitive consequence is that in a DC circuit the energy travels through the space around the wire, not along the copper.
Denotes the Poynting vector: the directional energy flux of an electromagnetic field, in watts per square metre.
Contexts: Laboratory
Is the cross product of the electric and magnetic fields, so it is perpendicular to both.
Contexts: Laboratory
Shows that energy in a circuit flows through the surrounding field rather than inside the conductor, which is the standard counter-intuitive result derived from it.
Contexts: Laboratory
A bold capital letter S, a double curve reversing at the middle.