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Glossary term: Black Body Radiation

Description: Black body radiation is electromagnetic radiation from an idealized object (black body) that absorbs all radiation that falls on it and re-emits it at a rate that maintains a state of thermal equilibrium. The spectrum of black body radiation is completely specified by the body's temperature according to known laws. Stars emit light similar to that of a black body at a temperature of several thousand degrees kelvin. To be contrasted with synchrotron radiation and other forms of "non-thermal" radiation.

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The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".