This post categorized under Vector and posted on July 3rd, 2018.

Poynting vector a quantity describing the magnitude and direction of the flow of energy in electromagnetic waves. It is named after English physicist John Henry Poynting who introduced it The Poynting vector represents the direction of propagation of an electromagnetic wave as well as the energy flux density or intensity. Since an electromagnetic wave is composed of an electric field Electromagnetic waves carry energy and as they propagate through space they can transfer energy to objects placed in their path. The rate of flow of energy in an electromagnetic wave is described by a vector S called the Poynting vector which is defined by the expression The magnitude of the Poynting vector represents the rate at which

Energy in Electromagnetic Waves. Electromagnetic waves carry energy as they travel through empty space. There is an energy density associated with both the electric field E and the magnetic field B. The rate of energy transport per unit area is described by the vector . which is called the Poynting vector. This expression is a vector product and since the magnetic field is perpendicular to

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