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The Observable Universe and Beyond


CMBR (Cosmic Microwave Background Radiation) Spectrum

CMBR Spectrum It was discovered in 1965 that there is a feeble microwave radiation emanating uniformly from all directions in the sky. It contributes about one percent to the static on a television screen that is not tuned to a local channel. This is the cosmic microwave background radiation (CMBR). The CMBR spectrum is identical to a blackbody radiation of 2.726oK as shown in Figure 02-04. The solid line represents the blackbody radiation spectrum that has been computed from theory. The data being represented by various symbols are collected from various measurements. The agreement between observation and theory is remarkable.

Figure 02-04 CMBR Spectrum

See also "Footprints of Creation".

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