a hypothetical object capable of absorbing all the electromagnetic radiation falling on it;
"a black body maintained at a constant temperature is a full radiator at that temperature because the radiation reaching and leaving it must be in equilibrium"
双语例句
A blackbody radiator will therefore appear black in all inertial frames. 一个辐射黑体在一切惯性系中都呈现黑色。
This radiator has, for any wavelength and any direction, the maximum spectral concentration of radiance at a given temperature. 在给定温度下，对于所有波长和入射方向黑体辐射功率最大。
