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Evaluating radiation safety knowledge and practices in dental professionals: findings from a cross-sectional survey. [PDF]
BMC Med EducAljamal M +4 more
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Cosmic Microwave Background Radiation
Reviews of Modern Physics, 1999Most astronomers and physicists now believe that we live in an expanding universe that evolved from an early state of extremely high density and temperature. Measurements of the spectrum and anisotropy of the cosmic microwave background radiation (CMBR) provide strong evidence supporting this picture. Today, the spectrum of the CMBR matches that of a 2.
Lyman Page, David Wilkinson
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1976 International Conference on Submillimeter Waves and Their Applications, 1976
The existence of essentially isotropic homogeneous cosmic background radiation with the spectrum of a 3 K blackbody places important limits on cosmological speculations. This radiation has been the subject of intensive experimental investigation for more than a decade.
P. L. Richards, D. P. Woody
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The existence of essentially isotropic homogeneous cosmic background radiation with the spectrum of a 3 K blackbody places important limits on cosmological speculations. This radiation has been the subject of intensive experimental investigation for more than a decade.
P. L. Richards, D. P. Woody
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The cosmic microwave background radiation
Reviews of Modern Physics, 1979Radio Astronomy has added greatly to our understanding of the structure and dynamics of the universe. The cosmic microwave background radiation, considered a relic of the explosion at the beginning of the universe some 18 billion years ago, is one of the most powerful aids in determining these features of the universe. This paper is about the discovery
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1998
Space is not dark and empty but filled with radiation. Most of its energy lies in the microwave region of the spectrum, near wavelengths of about 1 or 2 millimeters, coming evenly from all directions. This light, called the “cosmic microwave background radiation,” is left over from the Big Bang.
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Space is not dark and empty but filled with radiation. Most of its energy lies in the microwave region of the spectrum, near wavelengths of about 1 or 2 millimeters, coming evenly from all directions. This light, called the “cosmic microwave background radiation,” is left over from the Big Bang.
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1989
The photon is the best probe we have of the distant regions of the universe. There are two regions in the electromagnetic spectrum where one can expect to see far back into the universe. In both of these windows there are backgrounds which are now being explored and studied.
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The photon is the best probe we have of the distant regions of the universe. There are two regions in the electromagnetic spectrum where one can expect to see far back into the universe. In both of these windows there are backgrounds which are now being explored and studied.
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Radiation of the cosmic background
Astrophysics and Space Science, 1992Radiation of cosmic background can be the result of permanent constant maximum possible creation of matter δ=c3/2G. It becomes the background in the era of matter and is determined by the entropy of the Universe and its parameters.
Vladim�r Skalsk� +1 more
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Cosmic background radiation physics
AIP Conference Proceedings, 1990At the time of the 25th anniversary of the discovery of the Cosmic Background Radiation, speculations are presented as to where the field will be in another 25 years. Future trends are forecast. (AIP)
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The Cosmic Microwave Radiation Background
2008Abstract Before the mid-1960s by far the greatest part of our information about the structure and evolution of the universe came from observations of the redshifts and distances of distant galaxies, discussed in the previous chapter.
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The cosmic background radiation
La Rivista Del Nuovo Cimento Series 3, 1994B. Melchiorri, F. Melchiorri
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