Black-body radiation

The temperature of a Pāhoehoe lava flow can be estimated by observing its color. The result agrees well with measured temperatures of lava flows at about 1,000 to 1,200 °C (1,830 to 2,190 °F).

9-year WMAP image (2012) of the cosmic microwave background radiation across the universe.[27][28]

Black-body radiation is the type of electromagnetic radiation within or surrounding a body in thermodynamic equilibrium with its environment, or emitted by a black body (an opaque and non-reflective body) held at constant, uniform temperature. The radiation has a specific spectrum and intensity that depends only on the temperature of the body.

单词	Black Body Radiation
释义	Black Body Radiation 原声例句 PBS趣味科普 Hot things glow because of black body radiation, which we talked about in our video about the color of the universe. 由于黑体辐射的关系，灼热的物体会发光，这在我们以前的影片中讲宇宙的颜色时谈过。英语百科 Black-body radiation Black-body radiation is the type of electromagnetic radiation within or surrounding a body in thermodynamic equilibrium with its environment, or emitted by a black body (an opaque and non-reflective body) held at constant, uniform temperature. The radiation has a specific spectrum and intensity that depends only on the temperature of the body.
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Black Body Radiation

Black-body radiation