Results 291 to 300 of about 775,871 (306)
Black Holes in the Brain and Spine: A Dark Disease.
J Pediatr Neurosci, 2020 Singanamalla B +4 more
europepmc +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Scientific American, 2009
The article discusses the prevention of the formation of black holes as a result of quantum effects and how these effects may give rise to dense entities called black stars instead. Topics include an overview of the theoretical physics of black holes, such as Einstein's field equations from his general relativity theory, a description and analysis of ...
BARCELO' C +3 more
openaire +3 more sources
The article discusses the prevention of the formation of black holes as a result of quantum effects and how these effects may give rise to dense entities called black stars instead. Topics include an overview of the theoretical physics of black holes, such as Einstein's field equations from his general relativity theory, a description and analysis of ...
BARCELO' C +3 more
openaire +3 more sources
Nature, 1990
Astronomers are among the most international of scientists. Yet chauvinism surfaces on a cosmic scale where the anxious search for a massive black hole at the centre of our Galaxy is concerned. The prodigious amounts of energy emitted from tiny regions at the centres of some nearby galaxies imply that they contain accreting black holes of ...
openaire +2 more sources
Astronomers are among the most international of scientists. Yet chauvinism surfaces on a cosmic scale where the anxious search for a massive black hole at the centre of our Galaxy is concerned. The prodigious amounts of energy emitted from tiny regions at the centres of some nearby galaxies imply that they contain accreting black holes of ...
openaire +2 more sources
2009
Abstract A black hole is an object that is inside its event horizon at r=r*: a one-way surface that particles and light can only traverse inward. This chapter studies the spherically symmetric nonrotating Schwarzschild black hole. The metric elements change their respective signs when crossing from r>r∗ to r<r*, leading to ...
openaire +1 more source
Abstract A black hole is an object that is inside its event horizon at r=r*: a one-way surface that particles and light can only traverse inward. This chapter studies the spherically symmetric nonrotating Schwarzschild black hole. The metric elements change their respective signs when crossing from r>r∗ to r<r*, leading to ...
openaire +1 more source
When is a black hole not a black hole?
New Scientist, 2019When it's an astrophysical black hole, of course.
openaire +1 more source
Soviet Physics Journal, 1989
This work presents a resolution of the causality paradox formulated by T. D. Lee in the theory of the Unruh effect and in the theory of black holes. The basis of the resolution is to take into account the transformation of a pure state into a mixed state in a measurement, which leads to a corresponding modification of the Bogolyubov transformations, so
openaire +1 more source
This work presents a resolution of the causality paradox formulated by T. D. Lee in the theory of the Unruh effect and in the theory of black holes. The basis of the resolution is to take into account the transformation of a pure state into a mixed state in a measurement, which leads to a corresponding modification of the Bogolyubov transformations, so
openaire +1 more source