Artificial Black Holes

Author: Mário Novello
Publisher: World Scientific
ISBN: 9814489603
Size: 31.60 MB
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This book contains 13 chapters — written by experts in general relativity, particle physics, and condensed matter physics — that explore various aspects of this two-way traffic.

Trapezium Giza Pyramid Artificial Black Hole Theory

Author: Frank M. Conaway, Jr.
Publisher: Lulu.com
ISBN: 130087497X
Size: 77.55 MB
Format: PDF, ePub, Mobi
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As first emphasized by Wheeler, when matter disappears into a black hole, its
entropy is gone for good, and the second law seems to be transcended, made
irrelevant. A clue to resolving this puzzle came in 1970, when Demetrious
Christodoulou, then a graduate student of Wheeler's at Princeton, and Stephen W
. Hawking of the University of Cambridge independently proved that in various
processes, such as black hole mergers, the total area black hole has entropy
proportional to the ...

Black Holes

Author: Derek J. Raine
Publisher: Imperial College Press
ISBN: 1848163827
Size: 64.79 MB
Format: PDF, Kindle
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6.1 Introduction In the preceding chapters we have explored the properties of two
highly symmetric vacuum solutions of the field equations of Einstein's general
theory of relativity, the Schwarzschild and Kerr black holes. For many years it was
expected that these black holes would turn out to be artifacts of high symmetry
and that real stars, being neither exactly spherically nor axially symmetric, would
not collapse to black holes. In that case black holes would be artificial
mathematical ...

Defenders Of Savage Earth

Author: Colin Tipton
Publisher: AuthorHouse
ISBN: 141076334X
Size: 67.11 MB
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Superheated plasma jets hundreds of thousands of light years long were thrown
into space along the north and south poles of the spinning black holes. It was
possible to construct an artificial singularity using a small machine that generated
gravity inside it. When spacetime was warped sufficiently, an artificial singularity
the size of a molecule is formed. In the process, the micro black hole begins to
devour the machine which created it. As the machine collapses into the tiny black
hole, ...

Black Holes And The Universe

Author: Igor D. Novikov
Publisher: Cambridge University Press
ISBN: 9780521558709
Size: 52.62 MB
Format: PDF
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In fact, the majority of astrophysicists came to be of the opinion that this path of
evolution would be extremely artificial and rather unlikely. We thus conclude that
black holes are inevitably created at the late stages of evolution of massive stars.
Can black holes of nonstellar origin exist in the Universe? The answer is most
probably in the affirmative. Later in the book these very interesting and unusual
possibilities will be described. Actually, the conclusions on the existence of
nonstellar ...

Black Holes

Author: John Gerald Taylor
Publisher:
ISBN:
Size: 26.57 MB
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basically depend on the fact that light and other waves can so scatter off a black
hole that the impinging wave is amplified, at the expense of the rotational energy
of the black hole. This 'super- radiant' scattering has a very low efficiency, the
maximum being a few tenths of a per cent for a black hole rotating at its maximal
rate. The process ... If we allow for the possibility of artificial black holes being
made on earth we have to recognize that they contain the threat of our own
destruction.

Tempest The Transition

Author: Niels Vandamme
Publisher: Niels Vandamme
ISBN: 1419684906
Size: 31.83 MB
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Black holes. Their existence had been feared for decades, inspiring man with
awe throughout the twentieth century. There was a time we feared their presence
many light years away; there would be a time we would not fear their presence
meters away. The question isn't whether or not it is possible, but whether or not
we'll still have any use of them when we can create them. It's certainly possible
that they could be used on astronomical schale: ironically, black holes could
potentially ...

Essential Quantum Optics

Author: Ulf Leonhardt
Publisher: Cambridge University Press
ISBN: 0521869781
Size: 21.83 MB
Format: PDF, Kindle
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Covering some of the most exciting trends in quantum optics, this textbook is ideal for advanced undergraduate and graduate students.

Quantum Analogues From Phase Transitions To Black Holes And Cosmology

Author: William Unruh
Publisher: Springer
ISBN: 3540708596
Size: 51.85 MB
Format: PDF, ePub
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Roughly speaking, if the Planckian degrees of freedom generate interactions with
respect to the global rest frame of the black hole instead of the (local) freely
falling frame, one may well obtain instabilities which generate deviations from
Hawkings result, for example. In summary, one reproduces the Hawking effect for
a rather large class of scenarios, but there are also counter-examples, which do
not appear to be unphysical or artificial, displaying strong deviations from
Hawkings ...

Altered Starscape

Author: Ian Douglas
Publisher: HarperCollins
ISBN: 0062379216
Size: 34.56 MB
Format: PDF
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Reportedly, the surface was under about a half G from the cylinder's rotation. The
thick body of the cylinder was also habitat—many enclosed habitats, in fact— that
allowed a vast diversity of galactic spacefaring species to live together. The
enormous ring orbited a small and probably artificial black hole of about three
solar masses, which in turn orbited Sagittarius A*. The larger orbit required
several centuries for each circuit. That central supermassive black hole had a
diameter of 44 ...