Thermal radiation is defined as thermal (heat) energy transformations caused by the emission of electromagnetic waves from an emitting body. Thermal radiation summed over all wavelengths obeys the Stefan-Boltzmann law, which states that the radiation...

Thermal radiation is electromagnetic radiation emitted from the surface of an object which is due to the object's temperature. Infrared radiation from a common household radiator or electric heater is an example of thermal radiation, as is the light...

(Manuscript received 21 May 2002, in final form 23 January 2003) ABSTRACT The polarization difference [Delta ]T^sub b^ between the vertical and horizontal components of thermal radiation emitted by clouds was studied using 37- and 85-GHz radiometers. The measurements were conducted during...

The physical environmental factors (air temperature, solar radiation, wind speed) that define specific microclimates and their effects on water and energy budgets of small birds are of major importance to our understanding of avian thermal biology. We examined the effects of solar radiation, wind...