The term "Total Power Radiated by Isotropic Source" refers to the total amount of electromagnetic energy emitted by a source that radiates equally in all directions. The measurement of 1.885mV represents the strength or intensity of this radiation.
The total power radiated by an isotropic source is calculated by multiplying the power density (in watts per meter squared) by the surface area of a sphere with a radius equal to the distance from the source. This calculation assumes that the radiation is evenly distributed in all directions.
No, the total power radiated by an isotropic source decreases as the distance from the source increases. This is due to the inverse square law, which states that the intensity of radiation is inversely proportional to the square of the distance from the source.
An isotropic source is one that radiates energy equally in all directions, with no preferential direction. This differs from other sources, such as directional antennas, which have a specific direction of radiation. Isotropic sources are often used as a theoretical reference for comparison with actual sources.
The total power radiated by an isotropic source is related to other measures of radiation, such as electromagnetic fields, through the power density. The power density is the amount of power per unit area and is related to the strength of the electromagnetic field. As the total power radiated by an isotropic source increases, so does the power density and the strength of the electromagnetic field.