Archive for the ‘physics’ category: Page 14

Aug 10, 2022

Math error: A new study overturns 100-year-old understanding of color perception

Posted by in categories: computing, mathematics, physics, space

A new study corrects an important error in the 3D mathematical space developed by the Nobel Prize-winning physicist Erwin Schrödinger and others, and used by scientists and industry for more than 100 years to describe how your eye distinguishes one color from another. The research has the potential to boost scientific data visualizations, improve TVs and recalibrate the textile and paint industries.

“The assumed shape of color space requires a paradigm shift,” said Roxana Bujack, a computer scientist with a background in mathematics who creates scientific visualizations at Los Alamos National Laboratory. Bujack is lead author of the paper by a Los Alamos team in the Proceedings of the National Academy of Sciences on the mathematics of color perception.

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Aug 10, 2022

Robot Confined to “Curved Space” Defies Known Laws of Physics

Posted by in categories: physics, robotics/AI, space

Using a robot confined to a sphere, scientists have proven bodies can move freely in curved spaces without pushing against anything.

Aug 9, 2022

The physics of accretion: How the universe pulled itself together

Posted by in categories: cosmology, physics

To form a celestial object, start with a gas cloud and add gravity. Then, it gets complicated.

Accretion is one of the most fundamental processes in the cosmos. It is a universal phenomenon triggered by gravity, and the process by which bits of matter accumulate and coalesce with more bits of matter. It works inexorably on all scales to attract and affix smaller things to bigger things, from the tiniest dust grains to supermassive black holes.

Accretion creates everything there is: galaxies, stars, planets, and eventually, us. It is the reason the universe is filled with a whole bunch of somethings instead of a whole lot of nothing.

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Aug 8, 2022

Weird Energy Beam Just Left A Galaxy Travelling At Five Times the Speed of Light And Hubble Caught It

Posted by in categories: chemistry, energy, health, physics, space

Science, Technology, Health, Physics, Chemistry stay Updated.

Scientists from The Australian National University (ANU) and James Cook University (JCU) have identified an “exquisite” natural mechanism that helps plants limit their water loss with little effect on carbon dioxide (CO2) intake—an essential process for photosynthesis, plant growth and crop yield.

Aug 8, 2022

Strange Radio Signals From Deep Space Contain Signs of New Physics, Scientists Say

Posted by in category: physics

A relic, a fossil, and a halo are among the bizarre features that defy existing theories, according to a new study.

Aug 5, 2022

Artificial intelligence discovers new physics variables!

Posted by in categories: mathematics, physics, robotics/AI, space

Analysing pendulum videos, the artificial intelligence tool identified variables not present in current mathematics.

An artificial intelligence tool has examined physical systems and not surprisingly, found new ways of describing what it found.

How do we make sense of the universe? There’s no manual. There’s no prescription.

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Aug 3, 2022

Two black holes merged despite being born far apart in space

Posted by in categories: cosmology, physics

A closer look at gravitational wave data reveals 10 overlooked mergers, including one between black holes that probably found each other late in life.

Aug 3, 2022

The Fermi Paradox Revisited and Resolved?

Posted by in categories: alien life, existential risks, physics

In February 2020, four distinguished astrophysicists — Jonathan Carroll-Nellenback, Adam Frank, Jason Wright, Caleb Scharf suggested that Earth may have remained unvisited by space-faring civilizations all the while existing in a galaxy of interstellar civilizations seeded by moving stars that spread alien life, offering a solution to the perplexing Fermi paradox. They concluded that a planet-hopping civilization could populate the Milky Way in as little as 650,000 years.

“It’s possible that the Milky Way is partially settled, or intermittently so; maybe explorers visited us in the past, but we don’t remember, and they died out,” says Jonathan Carroll-Nellenback, an astronomer at the University of Rochester and his collaborators in a 2019 study that suggests it wouldn’t take as long as thought for a space-faring civilization to planet-hop across the galaxy, because the orbits of stars can help distribute life, offering a new solution to the Fermi paradox. “The solar system may well be amid other settled systems; it’s just been unvisited for millions of years.”

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Aug 3, 2022

How blue-sky research shapes the future

Posted by in categories: physics, space

While driven by the desire to pursue curiosity, fundamental investigations are the crucial first step to innovation.

When scientists announced their discovery of gravitational waves in 2016, it made headlines all over the world. The existence of these invisible ripples in space-time had finally been confirmed.

It was a momentous feat in basic research, the curiosity-driven search for fundamental knowledge about the universe and the elements within it. Basic (or “blue-sky”) research is distinct from applied research, which is targeted toward developing or advancing technologies to solve a specific problem or to create a new product.

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Aug 3, 2022

The Principle of Least Action

Posted by in category: physics

Lagrangian Mechanics is the basis of modern Physics. In this article, we’ll discuss various Lagrangians and show how waves could explain everything.

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