Question

define black body radiation...

Answer 1

Black-body radiation
 is the thermalelectromagnetic radiations within or surrounding a body in thermodynamic equilibrium with its environment, or emitted by a Black body (an opaque and non-reflective body). It has a specific spectrum and intensity that depends only on the body's temperature, which is assumed for the sake of calculations and theory to be uniform and constant.

Answer 2

hey mate here is your short and understandable answer ....

Black-body radiation is the thermal electromagnetic radiation within or surrounding a body in thermodynamic equilibrium with its environment, or emitted by a black body.

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