ULFAT
Last Activity: 9 Years ago
In the SI system, it has units watts per square metre (W/m2). It is used most frequently with waves (e.g. sound or light), in which case the average power transfer over one period of the wave is used. Intensity can be applied to other circumstances where energy is transferred.The Intensity of waves (called Irradiance in Optics) is defined as the power delivered per unit area. The wave energy comes from the simple harmonic motion of its particles. The total energy will equal the maximum kinetic energy.