What is a poyynting vector?
poynting vector is an important equation in physics. It describes the amount of energy per unit of an area supplied by an electromagnetic field. Like any vector, the vector has both size and direction. Any electrical equipment that is powered by electromagnetic waves emissions that form electromagnetic fields. Everyday examples of the device that produce these fields include lamps, TVs and mobile phones. The electrical equipment does not have to be turned on to create an electric field, only be connected. The device receives voltage from the output whenever it is connected, and this creates this type of field. These are produced by running electric shock. When the device is turned on, the currents begin and the magnetic and electrical fields are connected to form an electromagnetic field.
In its easiest form, the poyngement vector is written as with = e x b . All variables in the equation are vector quantities, as shown in the fat font.S is poynting vector, E is an electric field A B is a magnetic field.
Electric and magnetic fields are measured in terms of their energy density, which can also be referred to as intensity. Electric and magnetic fields are perpendicular in the electromagnetic wave. This means that the power size of the electromagnetic field is simply the size of the power of the power of the electric field, multiplied by the magnetic field density.
For practical applications, the basic equations must often be divided by a constant called μ 0 (it is pronounced "Nought"). This constant represents the permeability of free space. Equal 1.2566 x 10
Theoretical physics commonly uses an alternative metric system called CGS, which means it applies another forma poyng vector. The CGS system has standard units of centimeters, grams and seconds, instead of standard units of meters, kilograms and seconds to the metric system. Poynting vector for theoretical physics is written as with = (c/4π)* e x b , where C means the speed of light.