Menu

Blog

Latest posts

Oct 12, 2024

Why the black hole information paradox still hasn’t been solved

Posted by in categories: cosmology, quantum physics

But you might notice that something is missing: this radiation doesn’t seem to encode, in any way, knowledge of the information that went into the creation of the black hole in the first place. Somewhere along the way, information was destroyed. That’s the key puzzle behind the black hole information paradox. No one seriously disputes the initial setup of the puzzle: that information exists, and that the information (and entropy) does in fact go into the black hole both when it’s first created and also as it grows. What is up for debate, and what in fact is the big question behind the information paradox, is whether that information comes back out again or not.

The way we calculate what comes out of a black hole via Hawking radiation, despite the fact that Hawking radiation has been around for a full half century as of 2024, hasn’t changed all that much over the past 50 years. What we do is assume the curvature of space from general relativity: the fabric of space is curved by the presence of matter and energy, and general relativity tells us exactly by how much.

We then perform our quantum field theory calculations in that curved space, detailing the radiation that comes out as a result. That’s where we learn that the radiation has the temperature, spectrum, entropy, and other properties we know that it possesses, including the fact that it doesn’t appear to encode that initial information when the radiation comes out.

Oct 12, 2024

Thousands of Linux systems infected by stealthy malware since 2021

Posted by in category: cybercrime/malcode

The ability to remain installed and undetected makes Perfctl hard to fight.

Oct 12, 2024

A Gen Xer with a master’s degree hasn’t found work in 9 years. He says he’s landed only four interviews

Posted by in category: futurism

A Gen Xer in California has been struggling to find a job. He says he’s been ghosted by employers despite having years of work experience.

Oct 11, 2024

Over-optimization in RL is well-known, but it even occurs when KL(policy || base model) is constrained fairly tightly

Posted by in category: policy

We’ve detected that JavaScript is disabled in this browser. Please enable JavaScript or switch to a supported browser to continue using x.com. You can see a list of supported browsers in our Help Center.

Help Center

Terms of Service Privacy Policy Cookie Policy Imprint Ads info © 2024 X Corp.

Oct 11, 2024

The Creepy Sounds The Earth Made When Its Magnetic Field Flipped Will Haunt Your Dreams

Posted by in category: satellites

Tens of thousands of years ago, the Earth’s magnetic field flipped — and now, scientists have recreated the haunting sound it made during that cataclysmic event.

Using data from the European Space Agency’s three-satellite Swarm mission delving deep into our planet’s magnetic field, Danish and German researchers have managed to map and recreate the sounds of what is known as the Laschamp event, which resulted in Earth’s magnetic field briefly flipping 41,000 years ago.

Continue reading “The Creepy Sounds The Earth Made When Its Magnetic Field Flipped Will Haunt Your Dreams” »

Oct 11, 2024

Calley Means & Casey Means, MD

Posted by in category: futurism

I finally got through this entire podcast, and I genuinely feel this is one of the most informative podcasts and also important podcasts for American healthcare.


The Joe Rogan Experience.

E

Continue reading “Calley Means & Casey Means, MD” »

Oct 11, 2024

Scientists Are Developing a Tool That Can ‘See’ Your Consciousness

Posted by in category: robotics/AI

Time, in this view, doesn’t look like a line in which one event causes another. Instead, eight events might be the eight vertices of a cube. Each point may connect with new geometric shapes that arise inside the cube—the vertices of which are also events—or the cube could become a point in a larger geometry. In any case, time is building a geometry like a crystal.

THE TEAM BUILT TWO ARTIFICIAL BRAINS to operate according to these theories so they could observe what happens without the interference of human projections, narratives, and emotions, and compare them with human subjects. An artificial brain doesn’t have an ego or a sense of existential dread, among other things, that might muddy the results. On the other hand, they were limited to a smaller number of primes because the machines don’t have other attributes humans do have.

Continue reading “Scientists Are Developing a Tool That Can ‘See’ Your Consciousness” »

Oct 11, 2024

Study finds genetics shape caloric restriction’s impact on lifespan

Posted by in categories: genetics, life extension

While caloric restriction (CR) has long been associated with increased lifespan, the study found that its effectiveness is highly influenced by individual genetic factors; some mice on restrictive diets experienced a notable lifespan extension, while others saw minimal gains.


New research on mice suggests that while extreme caloric restriction may extend lifespan, genetic resilience plays a critical role.

Oct 11, 2024

Beyond Our Solar System: How Uranus Prepares Us for Exoplanet Discovery

Posted by in categories: futurism, space

“Studying how known benchmarks like Uranus appear in distant imaging can help us have more robust expectations when preparing for these future missions,” said Samantha Hasler. “And that will be critical to our success.”


How can Uranus teach us about exoplanets? This is what a recent study presented at the 56th annual meeting of the American Astronomical Society (AAS) Division for Planetary Sciences (DPS) hopes to address as a team of researchers investigated how gas giants like Uranus can be used to better understand the characteristics of exoplanets. While exoplanets have been discovered using the direct imaging method, no exoplanet has been directly imaged itself. Therefore, this study holds the potential to use gas giant planets within our solar system as analogs for exoplanets throughout the cosmos.

For the study, the researchers analyzed data collected from NASA’s New Horizons spacecraft and the Hubble Space Telescope to study the atmosphere of Uranus in various wavelengths. Both telescopes exhibit different imaging properties, as Hubble is built to obtain up-close images from far away while New Horizons is built to obtain up-close images from close-up. As a result, the images from Hubble revealed far more detail while the images from New Horizons revealed Uranus as a small dot.

Continue reading “Beyond Our Solar System: How Uranus Prepares Us for Exoplanet Discovery” »

Oct 11, 2024

Physicists Generated Sound Waves That Travel in One Direction Only

Posted by in category: physics

A new way to create silence.

Page 1 of 11,83112345678Last