منابع مشابه
Naked suicide.
Suicide attempts and completions by individuals while naked remain unexplored, both by clinicians and in the professional literature. Nakedness at the time of the incident conveys important information about an individual's mental state. Motivations for attempting or completing suicide while naked are discussed. Nakedness during a suicide attempt is presumptive evidence of high risk for suicide...
متن کاملNaked Black Holes
It is shown that there are large static black holes for which all curvature invariants are small near the event horizon, yet any object which falls in experiences enormous tidal forces outside the horizon. These black holes are charged and near extremality, and exist in a wide class of theories including string theory. The implications for cosmic censorship and the black hole information puzzle...
متن کاملNaked active galactic nuclei
In this paper we report the discovery of a new class of active galactic nucleus in which although the nucleus is viewed directly, no broad emission lines are present. The results are based on a survey for AGN in which a sample of about 800 quasars and emission line galaxies were monitored yearly for 25 years. Among the emission line galaxies was the expected population of Seyfert 2 galaxies wit...
متن کاملNaked mole-rat
It’s a mammal Jim, but not as we know it... Mammals are typically characterised as furry and warmblooded. The naked mole-rat is neither of these. Being underground and surrounded by hundreds of brothers and sisters, there is little fluctuation in surrounding temperature and they have all but lost the ability to regulate their body temperature physiologically. Living in the dark, they can no lon...
متن کاملNaked Singularity and Thunderbolt
We consider quantum theoretical effects of the sudden change of the boundary conditions which mimics the occurrence of naked singularities. For a simple demonstration, we study a massless scalar field in (1 + 1)-dimensional Minkowski spacetime with finite spatial interval. We calculate the vacuum expectation value of the energy-momentum tensor and explicitly show that singular wave or thunderbo...
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ژورنال
عنوان ژورنال: Nature
سال: 1999
ISSN: 0028-0836,1476-4687
DOI: 10.1038/19881