đ 13 billion years of cosmic evolution, compressed into minutes.
From the birth of the Universe itself to the emergence of life on Earth, this cinematic journey compresses the entire story of cosmic evolution into a single breathtaking timeline.
Witness galaxies colliding across the darkness of space. See stars ignite, live, and die in colossal explosions. Explore the mysterious depths of black holes where even light cannot escape. And discover how the ashes of ancient stars became the building blocks of planets, oceans, and ultimately⊠us.
đ In this journey, youâll experience:
⊠The Birth of the Universe. ⊠The Formation of Galaxies. ⊠Gravitational Collisions Across Space. ⊠The Creation of Black Holes. ⊠Supernova Explosions. ⊠The Birth of the Sun. ⊠The Formation of Earth and the Moon. ⊠The Origin of Life. ⊠The Oxygen Revolution. ⊠The Rise of Complex Organisms.
Every moment in this video represents millions of years of cosmic history.
Hawking radiation is a form of radiation emitted by black holes, as theoretically predicted by Stephen Hawking. It suggests that black holes do not merely swallow matterâas had previously been assumedâbut also emit very faint radiation themselves. This radiation has not yet been observed in space; instead, researchers use models in the laboratory that mimic the behavior of black holes.
Although the effect of Hawking radiation is well known in astrophysics, the mechanism by which it arises in a gravitational context has not yet been fully elucidated. A scientist from Paderborn University along with an international team of researchers from the Weizmann Institute of Science in Israel and Cinvestav in Mexico is now shedding light on this mechanism using gravitational analogs in the laboratory.
The team has theoretically modeled the process by which Hawking radiation is generated in a nonlinear optical environment, identifying a simple, direct mechanism in the process. Furthermore, the team was able to observe in experiments that the radiation affects the system. The results have now been published in Nature.
Dark matter accounts for 85% of the matter in the universe, but scientists still do not know what it is made of. A study, published in Physical Review Letters, by Rice University researchers proposes a detector design that could help search for axions, hypothetical particles that many physicists think could make up dark matter.
The proposed detector would rely on a class of semiconductor materials whose response changes when their orientation shifts within a magnetic field. This material response makes it easier to tune the detector, allowing researchers to probe a range of axion masses that have remained difficult to explore with existing technologies.
âWe are proposing a well-studied material from condensed matter physics for a new applicationâaxion detection,â said Jaanita Mehrani, a doctoral student in Riceâs Applied Physics Graduate Program who is the first author on the study. âWhatâs different about this material is that it doesnât have to use complex mechanical tuning mechanisms, it simply tunes with the magnetic field.â
Everything around us, from atoms and molecules to planets and galaxies, is governed by two extraordinarily successful theories of physics: quantum mechanics and gravity. Quantum mechanics explains the behavior of the microscopic world, while Einsteinâs theory of gravity describes the motion of stars, black holes and the expansion of the universe. Yet despite their successes, physicists are still searching for a theory of âquantum gravityâ that would unite them into a single description of nature.
One of the most widely expected features of such a theory is that gravity should obey the laws of quantum mechanics. And this is where it gets difficult: Quantum mechanics predicts that any object can be delocalized over multiple places at once, which is routinely tested in experiments with atoms and even small clumps of metal. Gravity, according to Einsteinâs theory, is space and time itselfâit can be curved, flat or even have waves propagating through it, as confirmed by gravitational wave detectors. So many physicists believe that spacetime around a quantum object would also exist in multiple âstatesâ simultaneously.
But what would such a situation actually look like?
đ Holographic theory suggests a profound idea: the universe may store information on its boundary, while the spacetime we experience emerges from that information. In this view, gravity is not only a force between masses.
Hello and welcome! My name is Anton and in this video, we will talk about the new explanation for what time actually is and a creation of a mini universe in the lab. Links: https://journals.aps.org/prresearch/p⊠#time #physics #boseeinsteincondensate.
0:00 Experiment that changes how we think about time. 1:30 Measuring the mini universe. 2:05 What is Bose-Einstein Condensate? 3:00 Entropy? 3:50 The problem of time. 5:08 How this was tested. 6:05 Mini Big Bang and the simulation of time. 7:05 Results and what this means for the idea of time. 8:00 Strange observations. 9:05 Implications and conclusions.
Enjoy and please subscribe.
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The worldâs most powerful particle accelerator will shutter operations Monday for four years of renovations to dramatically boost its collision capacity and the potential for unlocking one of the greatest mysteries of the universe: dark matter.
The Large Hadron Collider (LHC)âa 27-kilometer (17-mile) proton-smashing circular tunnel at the heart of Europeâs physics lab CERN near Genevaâhas most famously been used to prove the existence of the Higgs boson, dubbed âthe God particle.â
In the tunnel, running about 100 meters (330 feet) below the French-Swiss border area, superconducting magnets and accelerating structures propel particles to extreme energies and then smash them together at phenomenal speeds.
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In the 19th century, scientists came up with the idea of the âaether,â a medium that filled all of space and allowed forces to travel from one place to another. While this was famously proved wrong by the Michelson-Morley experiment, the idea of the aether made a comeback. The new aether is compatible with Einsteinâs theories and could explain dark energy and maybe even dark matter. Letâs take a look.
The biggest open problem in the foundations of physics is that Einsteinâs theory of gravity, General Relativity, does not cooperate with quantum mechanics. Physicists have tried to solve this issue by coming up with a theory of quantum gravity, but those theories fall apart when you need them most â inside of black holes and at the Big Bang. Recently, though, physicists published a new calculation for the Big Bang, with a theory called quadratic gravity, which lets us skip over quantum gravity entirely, and that could explain the origin of time. Letâs take a look.
This video discusses a new explanation for the beginning of the universe, published in PRL, which addresses quantum gravity and the period before time began. It features a presenter discussing \.
Can we actually test whether the multiverse is real? Not just philosophicallybut scientifically?
Quantum physicist Maria Violaris presents five remarkable experiments, from Schrödingerâs cat to Googleâs Willow quantum chip, that put the multiverse to the test. Along the way, she untangles two of the strangest phenomena in all of physics â quantum measurement and entanglement â and reveals how a thought experiment designed to test the multiverse in 1985 accidentally launched todayâs billion-dollar quantum computing race.
Maria also shares a puzzling thought experiment of her own that overturns a long-held assumption: that you can never communicate across branches of the multiverse.
Join this channel to get access to Mariaâs exclusive Memberâs Only Q&A: / @theroyalinstitution.
Maria Violaris is a quantum physicist and prize-winning science communicator with a PhD in the foundations of quantum information from the University of Oxford. She works on quantum theory research at Oxford Quantum Circuits, runs a YouTube channel and the Quantum Foundations Podcast, and pioneered the use of quantum thought experiments for quantum computing education through her Quantum Paradoxes series at IBM Quantum.
