منابع مشابه
Binary neutron star inspiral, LIGO, and cosmology
The most promising anticipated source for the United States Laser Interferometer Gravitational-wave Observatory (LIGO) or its French/Italian counterpart VIRGO is the radiation emitted during the final moments of inspiral before the coalescence of a neutron star neutron star (ns-ns) binary system. The instruments that will operate in the LIGO facility will evolve over time, and the often-discuss...
متن کاملCosmology and Life
The progress in cosmology in the past few decades leads also to new insights into the global question of the emergence of intelligent life in the universe. Here I am not referring to discoveries that are related to very localized regions, such as the detection of extrasolar planetary systems, but rather to properties of the universe at large. In order to set the stage properly for the topics to...
متن کاملCosmology and the Origin of Life *
We discuss some of the cosmological constraints on the evolution and persistence of life in the Universe and in hypothetical universes other than our own. We highlight the role played by the age and size of the universe, and discuss the interplay between the main-sequence stellar lifetime and the biological evolution time scale. The consequences of different versions of the inflationary univers...
متن کامل“the effect of risk aversion on the demand for life insurance: the case of iranian life insurance market”
abstract: about 60% of total premium of insurance industry is pertained?to life policies in the world; while the life insurance total premium in iran is less than 6% of total premium in insurance industry in 2008 (sigma, no 3/2009). among the reasons that discourage the life insurance industry is the problem of adverse selection. adverse selection theory describes a situation where the inf...
15 صفحه اولThe half-life of 87Rb.
The half-life of 87Rb was measured by a liquid scintillation method according to the efficiency tracing method. The measuring sample of rubidium chloride was dissolved in a scintillation cocktail of Insta-gel, and the rubidium was determined by gravimetry as tetraphenylborate. The result was (5.56 +/- 0.025) x 10(10) years.
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ژورنال
عنوان ژورنال: Nature
سال: 1979
ISSN: 0028-0836,1476-4687
DOI: 10.1038/282559a0