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Archive for the ‘physics’ category: Page 9

Sep 10, 2022

BREAKING: Cambridge Physicists Find Wormhole Proof

Posted by in categories: cosmology, physics, time travel

University of Cambridge physicists have developed a theoretical foundation for the existence of wormholes, which are pipelines that connect two dissimilar places in space-time. Time travel and instant communication across great distances may become possible if a piece of data or a physical object could pass through the wormhole.

“But there’s a problem: Einstein’s wormholes are extremely unsteady, and they don’t stay open long enough for something to pass over.”

In 1988, physicists reached the deduction that a type of negative energy called Casimir energy might keep wormholes open.

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Sep 9, 2022

Theoretical physicists argue that black holes admit vortex structures

Posted by in categories: cosmology, physics

Black holes are astronomical objects with extremely strong gravitational pulls from which not even light can escape. While the idea of bodies that would trap light has been around since the 18th century, the first direct observation of black holes took place in 2015.

Since then, physicists have conducted countless theoretical and experimental studies aimed at better understanding these fascinating cosmological objects. This had led to many discoveries and theories about the unique characteristics, properties, and dynamics of .

Researchers at Ludwig-Maximilians-Universität and Max-Planck-Institut für Physik have recently carried out a theoretical study exploring the possible existence of vortices in black holes. Their paper, published in Physical Review Letters, shows that black holes should theoretically be able to admit structures.

Sep 9, 2022

To Hear or Not to Hear Overtones in Black Hole Mergers

Posted by in categories: cosmology, physics

With the upgraded detectors at the Laser Interferometer Gravitational-Wave Observatory (LIGO) and its sister facility Virgo, researchers can now measure significantly finer details of the gravitational-wave signals released from black hole mergers. This progress opens tantalizing prospects for black hole spectroscopy, a technique that involves analyzing the signal-frequency spectra of gravitational waves and that could be used to test the limits of the general theory of relativity. In 2019, an analysis of the first detected gravitational-wave signal (GW150914) indicated that it contained multiple tones, or “overtones” (see Synopsis: Hunting for Hair on Coalescing Black Holes), a finding that could lead to novel spectroscopy approaches. Now a new analysis of GW150914 by Roberto Cotesta of Johns Hopkins University in Baltimore and colleagues challenges that previous claim. Cotesta and his colleagues find that the suspected overtones could be caused by noise [1].

The overtones presented in the 2019 study were extracted from the “ringdown” phase of the merger, when the remnant black hole shakes like a struck bell. Cotesta and his colleagues wanted to test whether that 2019 conclusion was robust to the input assumptions used for the extraction. These assumptions include the time at which the gravitational-wave signal peaks and the noise that contributes to the measured signal. The team finds that the procedure is not robust and that some noise patterns—such as fluctuations occurring right around the signal peak—produce artifacts in the data that resemble overtones.

Theoretical physicist Swetha Bhagwat at the University of Birmingham, UK, who wasn’t involved in either study, says that while neither analysis has obvious faults, the fact that slight differences in the parameters used by the two teams lead to opposing conclusions highlights the need for further scrutiny. The detection of overtones has exciting implications for black hole spectroscopy, so it’s very important that the community debates this issue, she says.

Sep 8, 2022

The World in 3000: Top 7 Future Technologies

Posted by in categories: biological, mathematics, physics, Ray Kurzweil, robotics/AI, singularity

This video covers the world in 3,000 and its future technologies. Watch this next video about the world in 10,000 A.D.: bit.ly/373KvDr.
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Sep 7, 2022

Korean nuclear fusion reactor achieves 100 million°C for 30 seconds

Posted by in categories: engineering, nuclear energy, physics

A sustained, stable experiment is the latest demonstration that nuclear fusion is moving from being a physics problem to an engineering one.

Sep 7, 2022

Your head will spin after reading what Stephen Hawking thought about the multiverse!

Posted by in categories: cosmology, physics, singularity

The concept or idea of a multiverse fascinates physicists’ as much as sci-fi fans, but if science was able to prove it exists, could every type of universe within it actually be predicted? The late Stephen Hawking believed there was a way to shed light on this strangest cosmic mystery.

Hawking’s final paper, published in the journal High-Energy Physics revisits one of his earlier (and no less mind-blowing) theories. The “no-boundary proposal” considers Einstein’s suggestion that the pre-Big Bang universe was a singularity, an extremely dense and hot micro-speck of matter where the laws of physics didn’t apply. Hawking speculated that time as we know it was nonexistent in this singularity, which had no beginning and no end—infinite and spherical rather than finite and linear. The embryonic universe is thought to have expanded rapidly and spawned parallel worlds during a period known as cosmic inflation.

Sep 7, 2022

“Unlimited Possibilities” — New Law of Physics Could Predict Genetic Mutations

Posted by in categories: biological, computing, cosmology, genetics, information science, mathematics, physics

According to a University of Portsmouth study, a new physics law could allow for the early prediction of genetic mutations.

The study discovers that the second law of information dynamics, or “infodynamics,” behaves differently from the second law of thermodynamics. This finding might have major implications for how genomic research, evolutionary biology, computing, big data, physics, and cosmology develop in the future.

Lead author Dr. Melvin Vopson is from the University’s School of Mathematics and Physics. He states “In physics, there are laws that govern everything that happens in the universe, for example how objects move, how energy flows, and so on. Everything is based on the laws of physics. One of the most powerful laws is the second law of thermodynamics, which establishes that entropy – a measure of disorder in an isolated system – can only increase or stay the same, but it will never decrease.”

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Sep 7, 2022

Clarketech: Anti-Gravity

Posted by in categories: futurism, physics

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Perhaps one of the most common technologies seen in science fiction is anti-gravity and gravity manipulation. Today we’ll examine if there’s an scientific pathways in physics to permit such technology, and what sort of amazing options it might offer if developed in the future.

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Sep 7, 2022

Are warp drives science now?

Posted by in categories: education, mathematics, physics, science, space travel

Check out the math & physics courses that I mentioned (many of which are free!) and support this channel by going to https://brilliant.org/Sabine/ where you can create your Brilliant account. The first 200 will get 20% off the annual premium subscription.

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Sep 6, 2022

These Experiments Could Prove Einstein Wrong

Posted by in categories: cosmology, mathematics, physics

Check out the math & physics courses that I mentioned (many of which are free!) and support this channel by going to https://brilliant.org/Sabine/ where you can create your Brilliant account. The first 200 will get 20% off the annual premium subscription.

Einstein’s theory of general relativity has made countless correct predictions and yet physicists are constantly trying to prove it wrong. Why? What would it be good for to prove Einstein wrong? And how could it be done? In this video I go through the most promising experiments that physicists currently work on which could prove Einstein wrong.

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