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Category: physics – Page 220

Researchers build circuit that harnessed the atomic motion of graphene to generate an electrical current that could lead to a chip to replace batteries.

A team of University of Arkansas physicists has successfully developed a circuit capable of capturing graphene’s thermal motion and converting it into an electrical current.

“An energy-harvesting circuit based on graphene could be incorporated into a chip to provide clean, limitless, low-voltage power for small devices or sensors,” said Paul Thibado, professor of physics and lead researcher in the discovery.

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Gravitational Wave Propulsion 🤔 ⤵️ check the abstract.

This paper sums up aftereffects of past examinations, including proposed models, so as to construct an advanced hypothetical structure for Gravitational Wave Propulsion. The structure com prises of groups of generators of gravitational waves, which have been hypothesized yet require experimentation, and models of push age. High effectiveness generators depend on cognizant sources, for example synchronized MEMS oscillators, the HTSC Gaser, in light of cognizant turn 2 changes in s-wave/d-wave super conductors, and the atomic electromagnetic wave to gravitational wave up-changing over transducer, in view of dineutrons. After gravitational wave age is effectively demonstrated in the research center, it will be pos-sible to apply an idea created in the field of cosmology. It was discovered that the back-ground vitality thick ness may offer mass to the graviton, which thus may permit gravi tons to produce push. Nearby foundation vitality thickness can be expanded by accusing materials of high dielectric steady in close ness to the wave producing components. Centered Gravitational Waves may likewise create singularities, where the radiation is changed over into a coulomb-like gravitational field. Gravitation al singularities will set a n-body floating framework among them selves, the rocket, and the rest of the assortments of the universe, with clear propulsive impacts. Uses of the current examination will prompt an extraordinary drive framework fit for empowering the quick investigation of the nearby planetary group, the neigh borhood star framework, and potentially the entire system. On a general basis, a vehicle traveling in space requires energy and a reaction mass to accelerate and reach useful speeds. Usually the reaction mass is the mass of the pro- pellant, which in most circumstances has also the role of energy source. Vehicles that are not required to carry re- action masses are more efficient and light weight, but con- ventional ones are limited in scope. It is a fact that, after extraordinary developments, space travel by rocket tech nology has reached its limits and a new paradigm is re- quired to make a big step forward in space propulsion; a step that should enable the exploration of nearby star systems and possibly the whole galaxy. These goals may seem unreachable with the current understanding of physics. Anyway with an open mind and a prag matic approach, it is well known that we are dealing with opinions that are often suggested by the lack of interdisciplinary approach es to complex problems. It often happened that when so called theoretical limits were found wrong, accidental dis- coveries have shown why the good theory was errone- ously applied the first time. An alternative to accidental discoveries are pieces of knowl Review on Gravitational wave propulsion Ching Lee University of Trento, Italy edge gathered from hun- dreds of research papers from different disciplines com- bined in an unusual way to create new concepts. They are normally rejected by experts of their single research field, thus painstaking efforts are required to simply communi- cate the new concept and let it grow in the laboratories. At the and of the last century numerous theoretical efforts have started to show that Gravitational Waves (GWs) have not only astronomical and astrophysicalrelevance, but they also have technological applica tions. Among them, sev- eral theories have approaches identified for telecommuni- cation, imaging, material processing, and space propul- sion. This paper summarizes results of past analyses, in cluding proposed examples, in order to build a modern theoreti cal framework for Gravitational Wave Propulsion. The framework consists of families of generators of gravitational waves, which have been theorized but still require experimentation, and models of thrust generation. High efficiency generators are based on co  herent sources, for instance synchronized MEMS oscillators, the HTSC Gaser, based on coherent spin-2 transitions in s-wave/d wave superconductors, and the nuclear electromagnetic wave to gravitational wave up-converting transducer, based on dineutrons. After gravitational wave generation is successfully proven in the laboratory, it will be pos- sible to apply a concept developed in the field of cosmology. It was found that the back- ground energy density may give mass to the graviton, which in turn may allow gravitons to produce thrust. Local background energy density can be increased by charging materials with high dielectric constant in close proximity to the wave generating elements. Focused Gravita tional Waves may also produce singularities, where the radiation is converted into a coulomb-like gravitational field. Gravitational singularities will set an n-body gravitating system among them selves, the spacecraft, and the remaining bodies of the universe, with obvious propulsive effects. Applications of the present anal ysis will lead to a unique propulsion system capable of enabling the fast exploration of the solar system, the local star system, and possibly the whole galaxy proposed models, so as to construct an advanced hypothetical structure for Gravitational Wave Propulsion. The structure com prises of groups of generators of gravitational waves, which have been hypothesized yet require experimentation, and models of push age. High effectiveness generators depend on cognizant sources, for example synchronized MEMS oscillators, the HTSC Gaser, in light of cognizant turn 2 changes in s-wave/d-wave super conductors, and the atomic electromagnetic wave to gravitational wave up-changing over transducer, in view of dineutrons. After gravitational wave age is effectively demonstrated in the research center, it will be pos-sible to apply an idea created in the field of cosmology. It was discovered that the back-ground vitality thick ness may offer mass to the graviton, which thus may permit gravi tons to produce push. Nearby foundation vitality thickness can be expanded by accusing materials of high dielectric steady in close ness to the wave producing components. Centered Gravitational Waves may likewise create singularities, where the radiation is changed over into a coulomb-like gravitational field. Gravitation al singularities will set a n-body floating framework among them selves, the rocket, and the rest of the assortments of the universe, with clear propulsive impacts. Uses of the current examination will prompt an extraordinary drive framework fit for empowering the quick investigation of the nearby planetary group, the neigh borhood star framework, and potentially the entire system. On a general basis, a vehicle traveling in space requires energy and a reaction mass to accelerate and reach useful speeds. Usually the reaction mass is the mass of the pro- pellant, which in most circumstances has also the role of energy source. Vehicles that are not required to carry re- action masses are more efficient and light weight, but con- ventional ones are limited in scope. It is a fact that, after extraordinary developments, space travel by rocket tech nology has reached its limits and a new paradigm is re- quired to make a big step forward in space propulsion; a step that should enable the exploration of nearby star systems and possibly the whole galaxy. These goals may seem unreachable with the current understanding of physics. Anyway with an open mind and a prag matic approach, it is well known that we are dealing with opinions that are often suggested by the lack of interdisciplinary approach es to complex problems. It often happened that when so called theoretical limits were found wrong, accidental dis- coveries have shown why the good theory was errone- ously applied the first time. An alternative to accidental discoveries are pieces of knowl Review on Gravitational wave propulsion Ching Lee University of Trento, Italy edge gathered from hun- dreds of research papers from different disciplines com- bined in an unusual way to create new concepts. They are normally rejected by experts of their single research field, thus painstaking efforts are required to simply communi- cate the new concept and let it grow in the laboratories. At the and of the last century numerous theoretical efforts have started to show that Gravitational Waves (GWs) have not only astronomical and astrophysicalrelevance, but they also have technological applica tions. Among them, sev- eral theories have approaches identified for telecommuni- cation, imaging, material processing, and space propul- sion. This paper summarizes results of past analyses, in cluding proposed examples, in order to build a modern theoreti cal framework for Gravitational Wave Propulsion. The framework consists of families of generators of gravitational waves, which have been theorized but still require experimentation, and models of thrust generation. High efficiency generators are based on co  herent sources, for instance synchronized MEMS oscillators, the HTSC Gaser, based on coherent spin-2 transitions in s-wave/d wave superconductors, and the nuclear electromagnetic wave to gravitational wave up-converting transducer, based on dineutrons. After gravitational wave generation is successfully proven in the laboratory, it will be pos- sible to apply a concept developed in the field of cosmology. It was found that the back- ground energy density may give mass to the graviton, which in turn may allow gravitons to produce thrust. Local background energy density can be increased by charging materials with high dielectric constant in close proximity to the wave generating elements. Focused Gravita tional Waves may also produce singularities, where the radiation is converted into a coulomb-like gravitational field. Gravitational singularities will set an n-body gravitating system among them selves, the spacecraft, and the remaining bodies of the universe, with obvious propulsive effects. Applications of the present anal ysis will lead to a unique propulsion system capable of enabling the fast exploration of the solar system, the local star system, and possibly the whole galaxy.

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O,.o.

Albert Einstein described black holes as strange objects “where God divided by zero.” An international team of astrophysicists has now confirmed that black holes are a distinct “species” from neutron stars –comparable to black holes in mass and size but confined within a hard surface, unlike black holes, an exotic cosmic object without a hard surface predicted by Einstein’s theory of General Relativity that do not have a surface, and are confined within an invisible boundary, called an event horizon, from within which nothing, not even light, can escape.

Hidden in NASA Archival X-ray Data

Definitive proof of the existence of such objects, “a holy grail of modern physics and astronomy,’ reports the Tata Institute of Fundamental Research, has been achieved by an international team who revealed by far the strongest steady signature of stellar-mass black holes to date. Using the archival X-ray data from the now decommissioned astronomy satellite Rossi X-Ray Timing Explorer, that probed the extreme environments around white dwarfs, neutron stars, black holes, the team identified the effect of the lack of hard surface on the observed X-ray emission, and thus have found an extremely strong signature of accreting stellar-mass black holes.

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Scientists typically prefer to work with ordered systems. However, a diverse team of physicists and biophysicists from the University of Groningen found that individual light-harvesting nanotubes with disordered molecular structures still transport light energy in the same way. By combining spectroscopy, molecular dynamics simulations and theoretical physics, they discovered how disorder at the molecular level is effectively averaged out at the microscopic scale. The results were published on 28 September in the Journal of the American Chemical Society.

The double-walled light-harvesting nanotubes self-assemble from molecular building blocks. They are inspired by the multi-walled tubular antenna network of photosynthetic bacteria found in nature. The nanotubes absorb and transport light energy, although it was not entirely clear how. “The nanotubes have similar sizes but they are all different at the with the molecules arranged in a disordered way,” explains Maxim Pshenichnikov, Professor of Ultrafast Spectroscopy at the University of Groningen.

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No one has yet managed to travel through time – at least to our knowledge – but the question of whether or not such a feat would be theoretically possible continues to fascinate scientists.

As movies such as The Terminator, Donnie Darko, Back to the Future and many others show, moving around in time creates a lot of problems for the fundamental rules of the Universe: if you go back in time and stop your parents from meeting, for instance, how can you possibly exist in order to go back in time in the first place?

It’s a monumental head-scratcher known as the ‘grandfather paradox’, but now a physics student Germain Tobar, from the University of Queensland in Australia, says he has worked out how to “square the numbers” to make time travel viable without the paradoxes.

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Scientists have long theorised that there are other types of superconductor out there waiting to be discovered, and it turns out they were right: new research has identified a g-wave superconductor for the first time, a major development in this area of physics.

Superconductors are materials that offer no electrical resistance, so electricity can pass through them with close to 100 percent efficiency.

That sounds great when you think about the potential of super-efficient power grids that don’t lose energy to heat. But there’s a catch. Materials that are able to act in this way usually need to be cooled to ultra-low temperatures before the actual superconductivity starts happening.

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Physicists from Lancaster University have established why objects moving through superfluid helium-3 lack a speed limit in a continuation of earlier Lancaster research.

Helium-3 is a rare isotope of helium, in which one neutron is missing. It becomes at extremely low temperatures, enabling unusual properties such as a lack of friction for moving objects.

It was thought that the of objects moving through was fundamentally limited to the critical Landau velocity, and that exceeding this speed limit would destroy the superfluid. Prior experiments in Lancaster have found that it is not a strict rule and objects can move at much greater speeds without destroying the fragile superfluid state.

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Making hydrogen a metal takes lot of pressure. But after a group of scientist’s lost the world’s first sample, the pressure is really on.

Is Jupiter the Reason for Life on Earth? — https://youtu.be/nsGRvnPL95I

Settling Arguments About Hydrogen With 168 Giant Lasers


“With gentle pulses from gigantic lasers, scientists at Lawrence Livermore National Laboratory in California transformed hydrogen into droplets of shiny liquid metal. Their research, reported on Thursday in the journal Science, could improve understanding of giant gas planets like Jupiter and Saturn whose interiors are believed to be awash with liquid metallic hydrogen.”

What in the World Is Metallic Hydrogen?
https://www.space.com/39370-what-is-bizarre-metallic-hydrogen.html
“On Earth, as we’ve seen, hydrogen’s behavior is straightforward. But Jupiter isn’’t Earth, and the hydrogen found in abundance within and beneath the great bands and swirling storms of its atmosphere can be pushed beyond its normal limits.”

Insulator-metal transition in dense fluid deuterium
http://science.sciencemag.org/content/361/6403/677
“The conditions in which hydrogen disassociates and becomes an atomic metal occur in high-energy-density environments, such as the interiors of giant planets and nuclear explosions. Celliers et al. trained 168 lasers on deuterium samples at the National Ignition Facility to measure the pressure and temperature conditions of the hydrogen transition.”

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Continue reading “Why Metallic Hydrogen Is the Holy Grail of High Pressure Physics” | >

Eindhoven University of Technology researchers found five different phases in mixtures of two substances.

Frozen water can take on up to three forms at the same time when it melts: liquid, ice, and gas. This principle, which states that many substances can occur in up to three phases simultaneously, was explained 150 years ago by the Gibbs phase rule. Today, researchers from Eindhoven University of Technology and University Paris-Saclay are defying this classical theory, with proof of a five-phase equilibrium, something that many scholars considered impossible. This new knowledge yields useful insights for industries that work with complex mixtures, such as in the production of mayonnaise, paint, or LCD’s. The researchers have published their results in the journal Physical Review Letters.

The founder of contemporary thermodynamics and physical chemistry is the American physicist Josiah Willard Gibbs. In the 1870s he derived the phase rule, which describes the maximum number of different phases a substance or mixture of substances can assume simultaneously. For pure substances, the Gibbs Phase Rule predicts a maximum of 3 phases.

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