Radiation pressure is a measure of the energy flux density emitted by a surface due to thermal radiation. It is a vector quantity that has both magnitude and di...
Radiation pressure is a measure of the energy flux density emitted by a surface due to thermal radiation. It is a vector quantity that has both magnitude and direction.
In a simplistic picture, imagine a surface at a particular temperature. Thermal radiation occurs when radiation is emitted by the surface, and this emitted radiation causes energy to flow from the surface into the surrounding space. The energy density of this radiation depends on the temperature of the surface, and it also depends on the frequency of the radiation.
The direction of radiation pressure is determined by the direction of the emitted radiation. In general, radiation pressure is emitted in the direction of the surface's normal.
Radiation pressure is a fundamental concept in electromagnetic theory, and it plays an important role in understanding the behavior of electromagnetic waves