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SlideshowReport

Spectrum of the Cosmic Microwave Background

Description
Spectrum of the Cosmic Microwave Background
The little squares on this graph are COBE’s measurements of the brightness of
the cosmic microwave background plotted against wavelength. To a remarkably
high degree of accuracy, the data fall along a blackbody curve for 2.73 K. The
peak of the curve is at a wavelength of 1.1 mm, in accordance with Wien’s law.

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