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"Physics Fiction."
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The gates
Young Samuel Johnson witnesses strange goings-on at 666 Crowley Road. The Abernathys don't mean any harm by their flirtation with the underworld, but when they unknowingly call forth Satan himself, they create a gap in the universe. Can one small boy defeat evil and save the world as we know it?
Book
A comparative study of wormhole geometries under two different modified gravity formalism
In the current article, we discuss the wormhole geometries in two different gravity theories, namely
F
(
Q
,
T
)
gravity and
F
(
R
,
T
)
gravity. In these theories,
Q
is called a non-metricity scalar,
R
stands for the Ricci scalar, and
T
denotes the trace of the energy–momentum tensor (EMT). The main goal of this study is to comprehensively compare the properties of wormhole solutions within these two modified gravity frameworks by taking a particular shape function. The conducted analysis shows that the energy density is consistently positive for wormhole models in both gravity theories, while the radial pressure is positive for
F
(
Q
,
T
)
gravity and negative in
F
(
R
,
T
)
gravity. Furthermore, the tangential pressure shows reverse behavior in comparison to the radial pressure. By using the Tolman-Oppenheimer-Volkov (TOV) equation, the equilibrium aspect is also described, which indicates that hydrostatic force dominates anisotropic force in the case of
F
(
Q
,
T
)
gravity theory, while the reverse situation occurs in
F
(
R
,
T
)
gravity, i.e., anisotropic force dominates hydrostatic force. Moreover, using the concept of the exoticity parameter, we observed the presence of exotic matter at or near the throat in the case of
F
(
Q
,
T
)
gravity while matter distribution is exotic near the throat but normal matter far from the throat in
F
(
R
,
T
)
gravity case. In conclusion, precise wormhole models can be created with a potential NEC and DEC violation at the throat of both wormholes while having a positive energy density, i.e.,
ρ
>
0
.
Journal Article
Wizards, aliens, and starships : physics and math in fantasy and science fiction
\"From teleportation and space elevators to alien contact and interstellar travel, science fiction and fantasy writers have come up with some brilliant and innovative ideas. Yet how plausible are these ideas--for instance, could Mr. Weasley's flying car in Harry Potter really exist? Which concepts might actually happen--and which ones wouldn't work at all? Wizards, Aliens, and Starships delves into the most extraordinary details in science fiction and fantasy--such as time warps, shape changing, rocket launches, and illumination by floating candle--and shows readers the physics and math behind the phenomena. With simple mathematical models, and in most cases using no more than high school algebra, Charles Adler ranges across a plethora of remarkable imaginings, from the works of Ursula K. Le Guin to Star Trek and Avatar, to explore what might become reality. Adler explains why fantasy in the Harry Potter and Dresden Files novels cannot adhere strictly to scientific laws, and when magic might make scientific sense in the muggle world. He examines space travel and wonders why it isn't cheaper and more common today. Adler also discusses exoplanets and how the search for alien life has shifted from radio communications to space-based telescopes. He concludes by investigating the future survival of humanity and other intelligent races. Throughout, he cites an abundance of science fiction and fantasy authors, and includes concise descriptions of stories as well as a glossary of science terms. Wizards, Aliens, and Starships will speak to anyone wanting to know about the correct--and incorrect--science of science fiction and fantasy\"-- Provided by publisher.
Book
Warp drive aerodynamics
A
bstract
In this work we analyse the potential for a warp drive spacetime to develop instabilities due to the presence of quantum matter. Particularly, we look for points of infinite blueshift (which are analogous to points of a black hole inner horizon, known for its semiclassical instability), and categorise them through the behaviour of geodesics in their vicinity. We find that warp-drive bubbles in dimension 2+1 or higher are in fact likely to be stable, as they generally contain only isolated points where divergences are approached, leading to a finite limit for the overall accumulation of destabilising energy. Furthermore, any semiclassical instabilities in the warp drive due to energy-density buildups can be further diminished with particular, more “aerodynamic” shapes and trajectories for the drive.
Journal Article
Modernist physics : waves, particles, and relativities in the writings of Virginia Woolf and D. H. Lawrence
Modernist Physics' studies literary texts and scientific ideas in their historical context to provide an original account of the ways in which Virginia Woolf and D. H. Lawrence engaged with the scientific theories, especially those of Albert Einstein.
BOOK
TeachAR-Augmented reality-based Education application
Augmented reality has come a long way from the concept of science fiction to science-based reality. Until recently, the cost of augmented reality was so high that designers only dreamed of working on an AR related design project. Things have changed now, and augmented reality is also available on mobile phones. An e-learning Augmented Reality application for immersive and practical based learning is proposed in this paper where any student can make use of this platform to learn concepts easily in Augmented Reality. This has been implemented by using technologies like Unity, Zappar and deploying the project on web using python and Django. By incorporating AR technology in education, students can effectively learn and understand complex concepts in a more engaging and interactive way.
Journal Article
Conceptual Design and Mechanical Analysis of a Lunar Anchored Cislunar Tether
A long tether anchored to the lunar surface and extended to position tens thousands of kilometers above the Earth is put forward. It could be used as an auxiliary cislunar traffic track to transfer cargos along it to the Moon without rocket landing and ascending, saving fuels. The configuration and statics of the tether is examined carefully within the Earth–Moon circular restricted three-body system. Firstly, the tensile stress in the tether is regarded as a main restriction factor, which is calculated for the case with a constant cross section. By then, the allowable endpoint position is proposed. So far, only materials available in laboratory, such as carbon nanotube, can sustain such a long and thin tether. Secondly, the constant tensile stress tether with variant cross section is taken into account. Then the key restriction factor is becoming the variation ratio of the tether’s cross section, which is determined by the material’s density and the tensile stress. In this condition, available materials expand to carbon fiber and some mass-produced composite materials. As a verdict, such a lunar anchored cislunar tether is more than science fiction in the sense of mechanics and material.
Journal Article
Bringing together science and fiction
Connie Potter and Rob Appleby, editors of Collision: Stories from the Science of CERN — an anthology of short science fiction stories — share how they brought creative writers, scientists and engineers to work together on this book.
Journal Article