SUMMARY
The cosmic microwave background (CMB) temperature variations were first measured by the Cosmic Background Explorer (COBE) satellite, revealing fluctuations of 1 part in 100,000. Robert Dicke, a key figure in this discovery, predicted the existence of the CMB while developing radar receivers in the 1940s and 1960s. His group at Princeton confirmed the detection of CMB radiation using a Dicke radiometer, following the accidental discovery by Arno Penzias and Robert Wilson at Bell Labs. The theoretical groundwork laid by Dicke and others transitioned early universe theories from speculation to established physics, with significant contributions from Steven Weinberg and George Gamow.
PREREQUISITES
- Understanding of cosmic microwave background (CMB) physics
- Familiarity with Brans-Dicke theory
- Knowledge of Dicke radiometer technology
- Awareness of key figures in cosmology, including Robert Dicke and Steven Weinberg
NEXT STEPS
- Research the Cosmic Background Explorer (COBE) satellite findings and methodologies
- Study Robert Dicke's contributions to cosmology and radar technology
- Examine the implications of Brans-Dicke theory on early universe models
- Review Steven Weinberg's publications on cosmic microwave background anisotropies
USEFUL FOR
Astronomers, cosmologists, and physics students interested in the historical development and theoretical foundations of cosmic microwave background research.