Re: What is the significance of the cosmic background radiation? Currently it is commonly called the Cosmic Microwave Background or just CMB, alluding to its Wien peak in the microwave region. There are a variety of competing theories for the origin of large-scale structure and the fluctuations in the cosmic microwave background radiation. When the Universe was born, nearly 14 billion years ago, it was filled with hot plasma of particles (mostly protons, neutrons, and electrons) and photons (light). In this video, Ms. Carnrite asks me to explain the story behind the discovery of the Cosmic Microwave Background Radiation. It's a fascinating story of inquiry, luck, timing and pigeons! 3K Background Radiation A uniform background radiation in the microwave region of the spectrum is observed in all directions in the sky. UCLA's Dr. Ned Wright explains. There are radioactive ores naturally present in the ground that give off small amounts of radiation.

The cosmic microwave background (or CMB) fills the entire Universe and is leftover radiation from the Big Bang. « Reply #4 on: 23/08/2012 17:50:49 » At present the CMBR is seen as pretty good evidence for the Big Bang theory - and whilst there will always be discussion, refinement, and testing of any important theory, to describe this area as unsettled is not correct. This discovery established the big bang model of the Universe, and the analysis of its fluctuations has confirmed the idea of inflation and led to the present era of precision cosmology. Cosmic microwave background is a sea of radiation that provides us with evidence for the big bang. But after electrons and photons settled into neutral atoms, there was far less scattering, and photons could travel over vast distances. Background radiation - is the 'natural' radiation of the Earth.

This review describes the discovery of the cosmic microwave background (CMB) radiation in 1965 and its impact on cosmology in the 50 years that followed.

This discovery established the big bang model of the Universe, and the analysis of its fluctuations has confirmed the idea of inflation and led to the present era of precision cosmology. This review describes the discovery of the cosmic microwave background radiation in 1965 and its impact on cosmology in the 50 years that followed.

Discovery of Cosmic Background Radiation In 1965 Arno A. Penzias and Robert W. Wilson of Bell Laboratories were testing a sensitive horn antenna which was designed for detecting low levels of microwave radiation. This discovery established the big bang model of the Universe, and the analysis of its fluctuations has confirmed the idea of inflation and led to the present era of precision cosmology.

When around 1916 Einstein first used general relativity to build a cosmic … This review describes the discovery of the cosmic microwave background (CMB) radiation in 1965 and its impact on cosmology in the 50 years that followed. It is evidence that the universe was once hotter than 3000 K, and it cooled to below 3000 K around 13.8 billion years ago. These models fall into two categories: (1) causal topological defect models, such as cosmic strings and textures, or (2) inflationary scenarios. Cosmic Microwave Background and Clouds Compared: (a) Early in the universe, photons (electromagnetic energy) were scattering off the crowded, hot, charged particles and could not get very far without colliding with another particle. As the theory goes, …



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