Showing posts with label Black Holes. Show all posts
Showing posts with label Black Holes. Show all posts

Thursday, May 9

The Entropy of Quantum Entanglement


Bartosz Regula from the RIKEN Center for Quantum Computing and Ludovico Lami from the University of Amsterdam have shown, through probabilistic calculations, that there is indeed, as had been hypothesized, a rule of entropy for the phenomenon of quantum entanglement.


This finding could help drive a better understanding of quantum entanglement, which is a key resource that underlies much of the power of future quantum computers. Little is currently understood about the optimal ways to make effective use of it, despite it being the focus of research in quantum information science for decades.


The second law of thermodynamics, which says that a system can never move to a state with lower entropy, or order, is one of the most fundamental laws of nature, and lies at the very heart of physics. It is what creates the "arrow of time," and tells us the remarkable fact that the dynamics of general physical systems, even extremely complex ones such as gases or black holes, are encapsulated by a single function, its entropy.     READ MORE...

Tuesday, December 5

In The News


Gravitational waves from the aftereffects of the most powerful merger of two black holes observed to date detected by researchers; "ringing" effect comes from new black hole assuming a spherical shape (More) | General relativity 101 (More, w/video)





Google delays launch of Gemini, a large language model expected to compete with OpenAI's ChatGPT-4, until January; reports say the model has trouble with some non-English prompts (More)





Ancient redwood trees can recover from severe fire damage by tapping long-buried buds, which have laid dormant under their bark for centuries (More)

 

Sunday, October 1

Einstein Was Wrong About Gravity


Einstein's theory of gravity—general relativity—has been very successful for more than a century. However, it has theoretical shortcomings. This is not surprising: the theory predicts its own failure at spacetime singularities inside black holes—and the Big Bang itself.

Unlike physical theories describing the other three fundamental forces in physics—the electromagnetic and the strong and weak nuclear interactions—the general theory of relativity has only been tested in weak gravity.

Deviations of gravity from general relativity are by no means excluded nor tested everywhere in the universe. And, according to theoretical physicists, deviation must happen.

Deviations and quantum mechanics
According to a theory initially proposed by Georges Lemaître and widely accepted by the astronomical community, our universe originated in a Big Bang. 

Other singularities hide inside black holes: Space and time cease to have meaning there, while quantities such as energy density and pressure become infinite. These signal that Einstein's theory is failing there and must be replaced with a more fundamental one.

Naively, spacetime singularities should be resolved by quantum mechanics, which apply at very small scales.

Quantum physics relies on two simple ideas: point particles make no sense; and the Heisenberg uncertainty principle, which states that one can never know the value of certain pairs of quantities with absolute precision—for example, the position and velocity of a particle. 

This is because particles should not be thought of as points but as waves; at small scales they behave as waves of matter.  READ MORE...

Saturday, May 6

Spacetime - Is It Real?


An illustration of heavily curved spacetime, outside the event horizon of a black hole. As you get closer and closer to the mass’s location, space becomes more severely curved, eventually leading to a location from within which even light cannot escape: the event horizon. At large distances, the spatial curvature is indistinguishable for equal mass black holes, neutron stars, white dwarfs, or any other comparably massed object. Credit: JohnsonMartin/Pixabay





When most of us think about the Universe, we think about the material objects that are out there across the great cosmic distances. Matter collapses under its own gravity to form cosmic structures like galaxies, while gas clouds contract to form stars and planets. Stars then emit light by burning their fuel through nuclear fusion, and then that light travels throughout the Universe, illuminating anything it comes into contact with. 

But there’s more to the Universe than the objects within it. There’s also the fabric of spacetime, which has its own set of rules that it plays by: General Relativity. The fabric of spacetime is curved by the presence of matter and energy, and curved spacetime itself tells matter and energy how to move through it.

But what, exactly, is the physical nature of spacetime? Is it a real, physical thing, like atoms are, or is it merely a calculational tool that we use to give the right answers for the motion and behavior of the matter within the Universe?


It’s an excellent question and a tough one to wrap your head around. Moreover, before Einstein came along, our conception of the Universe was very different from the one we have today. Let’s go way back to the Universe before we even had the concept of spacetime, and then come forward to where we are today.




The journey from macroscopic scales down to subatomic ones spans many orders of magnitude, but going down in small steps can make each new one more accessible from the previous one. Humans are made of organs, cells, organelles, molecules, atoms, then electrons and nuclei, then protons and neutrons, and then quarks and gluons inside of them. This is the limit to how far we’ve ever probed nature.Credit: Magdalena Kowalska/CERN/ISOLDE team



At a fundamental level, we had long supposed that if you took everything that was in the Universe and cut it up into smaller and smaller constituents, you’d eventually reach something that was indivisible. Quite literally, that’s what the word “atom” means: from the Greek ἄτομος: not able to be cut. 

The first record we have of this idea goes back some 2400 years to Democritus of Abdera, but it’s plausible that it may go back even farther. These “uncuttable” entities do exist; each one is known as a quantum particle. Despite the fact that we took the name “atom” for the elements of the periodic table, it’s actually subatomic particles like quarks, gluons, and electrons (as well as particles that aren’t found in atoms at all) that are truly indivisible.   READ MORE...

Monday, April 11

Powerful Space Laser


Powerful, radio-wavelength laser light has been detected emanating from the greatest distance across deep space yet.

It's a type of massless cosmic object called a megamaser, and its light has traveled for a jaw-dropping 5 billion light-years to reach us here on Earth. The astronomers who discovered it using the MeerKAT radio telescope in South Africa have named it Nkalakatha – an isiZulu word meaning "big boss".

The discovery has been accepted into The Astrophysical Journal Letters and is available on preprint server arXiv.

"It's impressive that, with just a single night of observations, we've already found a record-breaking megamaser," said astronomer Marcin Glowacki of the Curtin University node of the International Centre for Radio Astronomy Research (ICRAR) in Australia.

"It shows just how good the telescope is."

A maser is the microwave equivalent of a laser (light amplification by stimulated emission of radiation). Rather than emitting visible light, a maser emits microwave and radio wavelengths that are stimulated and amplified. For an astrophysical maser, the processes that amplify the light are cosmic; planets, comets, clouds, and stars can all produce masers.

As you may have guessed it, a megamaser is therefore a maser with some serious oomph. Generally these emissions are produced by an object that is going absolutely ham in some way; for instance, active supermassive black holes can produce megamasers.

When the data came in from the first night of a survey planned for 3,000 hours, Glowacki and team found the signature of a very specific type of megamaser, bright in wavelengths amplified by stimulated hydroxyl molecules, consisting of one hydrogen atom and one oxygen atom.  READ MORE...

Sunday, March 20

Interior of Protons Entangled


If a photon carries too little energy, it does not fit inside a proton (left). A photon with sufficiently high energy is so small that it flies into the interior of a proton, where it 'sees' part of the proton (right). Maximum entanglement then becomes visible between the 'seen' and 'unseen' areas. Credit: IFJ PAN




Fragments of the interior of a proton have been shown by scientists from Mexico and Poland to exhibit maximum quantum entanglement. The discovery, already confronted with experimental data, allows us to suppose that in some respects the physics of the inside of a proton may have much in common not only with well-known thermodynamic phenomena, but even with the physics of... black holes.

Various fragments of the inside of a proton must be maximally entangled with each other, otherwise theoretical predictions would not agree with the data collected in experiments, it was shown in European Physical Journal C. 

The theoretical model (which extends the original proposal by physicists Dimitri Kharzeev and Eugene Levin) makes it possible to suppose that, contrary to current belief, the physics operating inside protons may be related to such concepts as entropy or temperature, which in turn may relate it to such exotic objects as black holes. 

The authors of the discovery are Dr. Martin Hentschinski from the Universidad de las Americas Puebla in Mexico and Dr. Krzysztof Kutak from the Institute of Nuclear Physics of the Polish Academy of Sciences (IFJ PAN) in Cracow, Poland.

The Mexican-Polish theorists analyzed the situation in which electrons are fired at protons. When an incoming electron carrying a negative electric charge approaches a positively charged proton, it interacts with it electromagnetically and deflects its path. 

Electromagnetic interaction means that a photon has been exchanged between the electron and the proton. The stronger the interaction, the greater the change in momentum of the photon and therefore the shorter the associated electromagnetic wave.  READ MORE...

Sunday, August 29

Wandering Black Holes


Supermassive black holes tend to sit, more or less stationary, at the centers of galaxies. But not all of these awesome cosmic objects stay put; some may be knocked askew, wobbling around galaxies like cosmic nomads.

We call such black holes 'wanderers', and they're largely theoretical, because they are difficult (but not impossible) to observe, and therefore quantify. But a new set of simulations has allowed a team of scientists to work out how many wanderers there should be, and whereabouts - which in turn could help us identify them out there in the Universe.

This could have important implications for our understanding of how supermassive black holes - monsters millions to billions of times the mass of our Sun - form and grow, a process that is shrouded in mystery.

Cosmologists think that supermassive black holes (SMBHs) reside at the nuclei of all - or at least most - galaxies in the Universe. These objects' masses are usually roughly proportional to the mass of the central galactic bulge around them, which suggests that the evolution of the black hole and its galaxy are somehow linked.

But the formation pathways of supermassive black holes are unclear. We know that stellar-mass black holes form from the core collapse of massive stars, but that mechanism doesn't work for black holes over about 55 times the mass of the Sun.

Astronomers think that SMBHs grow via the accretion of stars and gas and dust, and mergers with other black holes (very chunky ones at nuclei of other galaxies, when those galaxies collide).

But cosmological timescales are very different from our human timescales, and the process of two galaxies colliding can take a very long time. This makes the potential window for the merger to be disrupted quite large, and the process could be delayed or even prevented entirely, resulting in these black hole 'wanderers'.  READ MORE

Saturday, August 21

Seeing Galaxies


Astronomers have captured some of the most detailed images ever seen of galaxies in deep space.  They are in much higher definition than normal and reveal the inner workings of galaxies in unprecedented detail.

Many of the images could yield insights into the role of black holes in star and planet formation.  The researchers say that the pictures will transform our understanding of how galaxies evolve.

The images are of the radio waves emitted by the galaxies. Researchers often study the radio waves from astronomical objects rather than the visible light they give off because it enables them to see things that would otherwise be blocked by the Earth's atmosphere or dust and gas in faraway galaxies.

Many regions of space that are dark to our eyes, actually burn brightly in the radio waves they give off. This allows astronomers to peer into star-forming regions or into the heart of galaxies.  READ MORE

Monday, August 16

Quantum Physics and Consciousness


One of the most important open questions in science is how our consciousness is established. 

In the 1990s, long before winning the 2020 Nobel Prize in Physics for his prediction of black holes, physicist Roger Penrose teamed up with anesthesiologist Stuart Hameroff to propose an ambitious answer.

They claimed that the brain’s neuronal system forms an intricate network and that the consciousness this produces should obey the rules of quantum mechanics – the theory that determines how tiny particles like electrons move around. 

This, they argue, could explain the mysterious complexity of human consciousness.

Penrose and Hameroff were met with incredulity. Quantum mechanical laws are usually only found to apply at very low temperatures

Quantum computers, for example, currently operate at around -272°C. At higher temperatures, classical mechanics takes over. Since our body works at room temperature, you would expect it to be governed by the classical laws of physics. 

For this reason, the quantum consciousness theory has been dismissed outright by many scientists – though others are persuaded supporters.

Instead of entering into this debate, I decided to join forces with colleagues from China, led by Professor Xian-Min Jin at Shanghai Jiaotong University, to test some of the principles underpinning the quantum theory of consciousness.  READ MORE

Sunday, August 8

Backside of Black Hole

Scientists have finally seen the backside of a black hole and in doing so, they've proved that a 1915 theory posited by Albert Einstein was correct.

Einstein's 1915 Theory of General Relativity predicted that the gravitational pull of black holes is so large that black holes warp the fabric of space, according to The Telegraph

His theory posited that this extremely massive gravitational pull was so massive that it twists magnetic fields and bends lightwaves near black holes.

As reported by The Telegraph, a new Nature report proves Einstein's theory correct.

"Fifty years ago, when astrophysicists started speculating about how the magnetic field might behave close to a black hole, they had no idea that one day we might have the techniques to observe this directly and see Einstein's general theory of relativity in action," Standford University professor and research report co-author, Roger Blandford, said.

Einstein's theory stated that because of how black holes warp the space fabric around them, it should be possible to see light waves ejected out of a black hole's backside as the twisted magnetic fields act as a mirror for the black hole. 

This theory was accepted by experts, according to The Telegraph, but it was never technically proven as it was always deemed an unobservable phenomenon.  READ MORE

Monday, July 26

Consciousness and Quantum Physics

One of the most important open questions in science is how our consciousness is established. In the 1990s, long before winning the 2020 Nobel Prize in Physics for his prediction of black holes, physicist Roger Penrose teamed up with anesthesiologist Stuart Hameroff to propose an ambitious answer.

They claimed that the brain's neuronal system forms an intricate network and that the consciousness this produces should obey the rules of quantum mechanics – the theory that determines how tiny particles like electrons move around. This, they argue, could explain the mysterious complexity of human consciousness.

Penrose and Hameroff were met with incredulity. Quantum mechanical laws are usually only found to apply at very low temperatures. Quantum computers, for example, currently operate at around -272°C. At higher temperatures, classical mechanics takes over.

Since our body works at room temperature, you would expect it to be governed by the classical laws of physics. For this reason, the quantum consciousness theory has been dismissed outright by many scientists – though others are persuaded supportersREAD MORE

Friday, July 23

Math & Black Holes

A new set of equations can precisely describe the reflections of the Universe that appear in the warped light around a black hole.

The proximity of each reflection is dependent on the angle of observation with respect to the black hole, and the rate of the black hole's spin, according to a mathematical solution worked out by physics student Albert Sneppen of the Niels Bohr Institute in Denmark.

This is really cool, absolutely, but it's not just really cool. It also potentially gives us a new tool for probing the gravitational environment around these extreme objects.

"There is something fantastically beautiful in now understanding why the images repeat themselves in such an elegant way," Sneppen said. "On top of that, it provides new opportunities to test our understanding of gravity and black holes."

If there's one thing that black holes are famous for, it's their extreme gravity. Specifically that, beyond a certain radius, the fastest achievable velocity in the Universe, that of light in a vacuum, is insufficient to achieve escape velocity.

That point of no return is the event horizon – defined by what's called the Schwarszchild radius – and it's the reason why we say that not even light can escape from a black hole's gravity.  TO READ MORE

Friday, July 9

Black Holes Confirmed

Study offers evidence, based on gravitational waves, to show that the total area of a black hole’s event horizon can never decrease.

There are certain rules that even the most extreme objects in the universe must obey. A central law for black holes predicts that the area of their event horizons — the boundary beyond which nothing can ever escape — should never shrink. This law is Hawking’s area theorem, named after physicist Stephen Hawking, who derived the theorem in 1971.

Fifty years later, physicists at MIT and elsewhere have now confirmed Hawking’s area theorem for the first time, using observations of gravitational waves. Their results appear today (July 1, 2021) in Physical Review Letters.

In the study, the researchers take a closer look at GW150914, the first gravitational wave signal detected by the Laser Interferometer Gravitational-wave Observatory (LIGO), in 2015. The signal was a product of two inspiraling black holes that generated a new black hole, along with a huge amount of energy that rippled across space-time as gravitational waves.

If Hawking’s area theorem holds, then the horizon area of the new black hole should not be smaller than the total horizon area of its parent black holes. In the new study, the physicists reanalyzed the signal from GW150914 before and after the cosmic collision and found that indeed, the total event horizon area did not decrease after the merger — a result that they report with 95 percent confidence.

Physicists at MIT and elsewhere have used gravitational waves to observationally confirm Hawking’s black hole area theorem for the first time. This computer simulation shows the collision of two black holes that produced the gravitational wave signal, GW150914. Credit: Simulating eXtreme Spacetimes (SXS) project. Credit: Courtesy of LIGO

Their findings mark the first direct observational confirmation of Hawking’s area theorem, which has been proven mathematically but never observed in nature until now. The team plans to test future gravitational-wave signals to see if they might further confirm Hawking’s theorem or be a sign of new, law-bending physics.

“It is possible that there’s a zoo of different compact objects, and while some of them are the black holes that follow Einstein and Hawking’s laws, others may be slightly different beasts,” says lead author Maximiliano Isi, a NASA Einstein Postdoctoral Fellow in MIT’s Kavli Institute for Astrophysics and Space Research. “So, it’s not like you do this test once and it’s over. You do this once, and it’s the beginning.”  TO READ THE ENTIRE ARTICLE, CLICK HERE...

Tuesday, August 18

SPACE: The Final Frontier

I have been a fan of Star Trek from the very beginning when James T. Kirk, the cowboy, broke whatever rules he needed to in order to WIN whatever it is that he needed to win; and, my interest continued with the very diplomatic and smooth John Luc Picard.

Most Science Fiction Movies are nothing but speculative bullshit and conjecture concerning the way the world was going to evolve and how space exploration was the only viable alternative.

SPACE TRAVEL
ALIENS
ALTERED DNA
ABDUCTIONS
MULTIPLE DIMENSIONS
WORM HOLES
BLACK HOLES
TIME TRAVEL

These are all the areas of interest for those of us that are interested in or believe that there is other life in the Universe besides Human Beings.

Why do we need to know these answers?

Because our entire existence revolves around the Christian Belief that there is a CREATOR who we see and worship as a Father/God.  Interestingly, every single major and minor religion and/or philosophy has a CREATOR as the foundation of its faith.  Some of those religions also believe that there were other gods who were subordinate to the one major God which we, as Christians, might relate to ANGELS, who, according to The BIBLE did much of God's work and/or delivered his messages.

IS THIS SIMPLY A COINCIDENCE?

I don't think so...

Our Universe is curved, so it is entirely possible that the end of this curve merges into the beginning which would be the ultimate singularity that we have all read so much about.  Plus, it is entirely possible that there are multiple dimensions because Jesus said, "in my Father's house there are many rooms."

While some religions as well as philosophies are hard to believe, we all know that there are elements of truth in all religions and that these elements of truth can be found in ancient writing and drawings on cave walls or inside of buildings like the Pyramids.

God, could then be the leader of all Universal People and like the MATRIX all universes end at their beginning and the process is repeated.