Archive for the ‘physics’ category

Jan 14, 2022

The Early Sun’s Rings Stopped Our Planet from Becoming a ‘Super-Earth’

Posted by in categories: physics, space

The sun was once surrounded by rings of gas and dust similar to those orbiting Saturn, a new study published in the journal Nature Astronomy reveals.

These rings played a vital role in the formation of our solar system and in the size and habitability of Earth.

The early sun’s dust and gas rings may have stopped our planet from becoming a “super-Earth,” according to the Rice University astrophysicists behind the new paper. “In the solar system, something happened to prevent the Earth from growing to become a much larger type of terrestrial planet called a super-Earth,” Rice University astrophysicist André Izidoro, said in a press statement.

Continue reading “The Early Sun’s Rings Stopped Our Planet from Becoming a ‘Super-Earth’” »

Jan 13, 2022

There is an unrealistically huge place in the universe where there is absolutely nothing

Posted by in categories: cosmology, physics

Supernovae and black holes, although they surprise scientists, are gradually being studied and recorded. Scientists are much more concerned with strange places in the Universe, which are difficult to explain by the laws of physics and nature we know. The Bootes Void is one such place. It is not considered to be emptiness by chance – there is absolutely nothing in it. Astronomers for a long time could not believe their own eyes, because in a colossal area of 300 million light years there was not a single galaxy or star. Solid blackness extends over unimaginable distances. Like on Facebook…

Jan 10, 2022

China’s ‘artificial sun’ hits new high in clean energy boost

Posted by in categories: nuclear energy, physics

Anhui research facility expected to provide plasma physics insights crucial to setting up industrial-size reactors to generate clean energy.

Jan 8, 2022

Keeping an #infrared telescope at very cold operating temperatures isn’t an option, it’s an absolute necessity

Posted by in categories: cosmology, physics, singularity

JWST operating temperature is less than 50 degrees above absolute zero (−223° C or-370° F) and will be the largest telescope ever placed at that cold temperature (50 Kelvin).

Webb will be able to see what the universe looked like around a quarter of a billion years (possibly back to 100 million years) after the #BigBang, when the first stars and galaxies started to form. JWST will change our view of the cosmos by taking Baby Pictures of #Universe, looking back to big bang.

#JWST is going to be like “Magic spectacles” that allow you to see things that you can’t normally see.
which is the pictures of the infant universe.

Continue reading “Keeping an #infrared telescope at very cold operating temperatures isn’t an option, it’s an absolute necessity” »

Jan 8, 2022

What 1000-X faster simulation means for digital twins

Posted by in categories: information science, physics, robotics/AI, sustainability

About a decade ago, MIT researchers discovered a technique that speeds physics modeling by 1000X. They spun this out into a new company, called Akselos, which has been helping enterprises to weave the tech into various kinds of digital twins used to improve shipping, refining, and wind power generation.

A digital twin is a virtual representation of an object or system that spans its lifecycle, is updated from real-time data, and uses simulation, machine learning, and reasoning to help decision-making. Connected sensors on the physical asset collect data that can be mapped onto the virtual model.

The specific innovation improves the performance of finite element analysis (FEA) algorithms which underpin most types of physics simulations. Akselos experience over the last decade can help executives explore the implications of the million-fold improvements in physics simulation that Nvidia is now demonstrating thanks to improvement in hardware, scalability, and new algorithms.

Jan 6, 2022

A New Theory for Systems That Defy Newton’s Third Law

Posted by in categories: energy, mathematics, physics, singularity, transportation

Many of these systems are kept out of equilibrium because individual constituents have their own power source — ATP for cells, gas for cars. But all these extra energy sources and mismatched reactions make for a complex dynamical system beyond the reach of statistical mechanics. How can we analyze phases in such ever-changing systems?

Vitelli and his colleagues see an answer in mathematical objects called exceptional points. Generally, an exceptional point in a system is a singularity, a spot where two or more characteristic properties become indistinguishable and mathematically collapse into one. At an exceptional point, the mathematical behavior of a system differs dramatically from its behavior at nearby points, and exceptional points often describe curious phenomena in systems — like lasers — in which energy is gained and lost continuously.

Now the team has found that these exceptional points also control phase transitions in nonreciprocal systems. Exceptional points aren’t new; physicists and mathematicians have studied them for decades in a variety of settings. But they’ve never been associated so generally with this type of phase transition. “That’s what no one has thought about before, using these in the context of nonequilibrium systems,” said the physicist Cynthia Reichhardt of Los Alamos National Laboratory in New Mexico. “So you can bring all the machinery that we already have about exceptional points to study these systems.”

Continue reading “A New Theory for Systems That Defy Newton’s Third Law” »

Jan 6, 2022

China’s ‘Artificial Sun’ Just Broke a Major World Record For Plasma Fusion

Posted by in categories: nuclear energy, physics

Just seven months after it announced a milestone record for plasma fusion, the Chinese Academy of Sciences has absolutely smashed it.

Their ‘artificial Sun’ tokomak reactor is has maintained a roiling loop of plasma superheated to 120 million degrees Celsius (216 million degrees Fahrenheit) for a gobsmacking 1,056 seconds, the Institute of Plasma Physics reports.

This also beats the previous record for plasma confinement of 390 seconds, set by the Tore Supra tokamak in France in 2003.

Continue reading “China’s ‘Artificial Sun’ Just Broke a Major World Record For Plasma Fusion” »

Jan 6, 2022

China’s $1 trillion ‘artificial sun’ fusion reactor just got five times hotter than the sun

Posted by in categories: nuclear energy, physics

The Chinese experimental nuclear fusion reactor smashed the previous record, set by France’s Tore Supra tokamak in 2003, where plasma in a coiling loop remained at similar temperatures for 390 seconds. EAST had previously set another record in May 2021 by running for 101 seconds at an unprecedented 216 million F (120 million C). The core of the actual sun, by contrast, reaches temperatures of around 27 million F (15 million C).

Related: 5 sci-fi concepts that are possible (in theory)

“The recent operation lays a solid scientific and experimental foundation towards the running of a fusion reactor,” experiment leader Gong Xianzu, a researcher at the Institute of Plasma Physics of the Chinese Academy of Sciences, said in a statement.

Continue reading “China’s $1 trillion ‘artificial sun’ fusion reactor just got five times hotter than the sun” »

Jan 6, 2022

What existed before the Big Bang?

Posted by in categories: cosmology, physics

Exactly what existed before the birth of our own Universe remains a mystery, but that is not stopping some physicists from trying to figure it out.

Jan 6, 2022

JWST LAUNCH: EuroMoonMars & Space Renaissance Virtual Event

Posted by in categories: physics, space

The Webb Telescope gave humanity a great Christmas present on last 25th December, when it successfully completed its launch and the first steps of the mission. It was an epoch-making event that marked the beginning of a new era in the observation of our Universe. With all eyes on it, this cutting-edge technology — whose value is approximately $10 billion — was launched aboard a European Ariane 5 rocket from Kourou Spaceport in French Guiana and it is currently undergoing the Deployment Process. Among the eyes that watched the event with particular expectations and excitement, were also those of the EuroMoonMars community, an ILEWG initiative that brings together researchers, experts and students with a strong passion for Space. It was with this spirit and enthusiasm that EuroMoonMars decided to organise a virtual event in preparation for the launch. The initiative took place on 24th December at 1pm CET and it was organised in collaboration with Space Renaissance International, a global non-profit organisation dedicated to bringing humanity closer to interdisciplinary space-related topics. The event — which was broadcast live on Space Renaissance International official youtube channel — was a fruitful moment of explanation, debate and questioning on different aspects of the Webb Telescope. The initial idea behind the organisation of the virtual session was to meet in the presence of some guests and experts to follow the launch in real time. The launch had in fact been scheduled by the Space Agencies for 24th December. After the announcement of its postponement, the programme of the event was revisited. The guests’ contributions covered different topics and highlighted the complexity of this innovative instrument.

The session opened with an introductory presentation given by Adriano V. Autino, founder and Vice-President of Space Renaissance International. Next, Prof Bernard Foing, Chair of EuroMoonMars and President of Space Renaissance International, held an overview lecture on the Webb Telescope, during which he showed the instrument and key aspects of the mission for its deployment. Afterwards, two guests gave their own contributions with a focus on different areas. Anouk Ehreiser, MSc in Physics at the University of Heidelberg, discussed the deployment steps of the telescope after launch with a video presentation which previewed the sequence of operations. Leander Schlarmann, MSc in Astronomy at the University of Vienna, gave a talk entitled “Characterizing Exoplanet Atmospheres with JWST”, where he focused on the novelties in astronomical observation that the Webb Telescope will make possible.

Page 1 of 16712345678Last