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Archive for the ‘physics’ category: Page 64

Apr 30, 2023

Godel & Einstein | Einstein walked with Gödel | Kurt Gödel | Incompleteness theorem | Logic

Posted by in categories: mathematics, physics

This video is about the story of two geniuses, Albert Einstein and the famous logician Kurt Godel. It is about their meeting at IAS, Princeton, New Jersey, when they both walked and discussed many things. For Godel, Einstein was his best friend and till his last days, he remain close to Einstein. Their nature was opposite to each other, yet both of them were very good friends. What did they talk about with each other? What did they share? What were their thoughts? For Godel, Einstein was more like his guide and for Einstein, it was a great pleasure to walk with him.

In the first episode, we discover their first meeting with each other and the development of friendship between them.

Continue reading “Godel & Einstein | Einstein walked with Gödel | Kurt Gödel | Incompleteness theorem | Logic” »

Apr 30, 2023

Physicists Discover a Strange New Theoretical Phase of Hydrogen

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

This new solid hydrogen phase discovered by an international team of researchers followed the model’s presentation of hydrogen molecules under extreme conditions: to use a food analogy, their shape morphed from spheres stacked like a pile of oranges to something that more closely resembled eggs.

Hydrogen typically requires very low temperatures and very high pressures to form a solid. It was through a novel machine learning study of this particular phase change that the scientists came across the new molecular arrangement.

Apr 29, 2023

4th Dimenssion quickly explained 📖

Posted by in category: physics

By Carl Sagan #shorts #science #physics #interestingfacts

Apr 29, 2023

Time Travel and it’s Possibility

Posted by in categories: physics, robotics/AI, time travel

Created using Paragraph ai.

Time travel has long been a popular theme in movies, but scientists believe that the concept of time teleportation is unlikely in reality. However, they do not dismiss the possibility of time travel altogether. The laws of physics suggest that time travel may be possible, but the details are complex.

Physicists explain that traveling to the near future is relatively simple, as we are all doing it right now at a rate of one second per second. Additionally, Einstein’s special theory of relativity states that the speed at which we move affects the flow of time. In other words, the faster we travel, the slower time passes. Furthermore, Einstein’s general theory of relativity suggests that gravity also impacts the flow of time. The stronger the nearby gravity, the slower time goes.

Apr 29, 2023

We’re still in the dark about a key black hole paradox

Posted by in categories: cosmology, information science, physics, singularity

Within a year, Karl Schwarzschild, who was “a lieutenant in the German army, by conscription, but a theoretical astronomer by profession,” as Mann puts it, heard of Einstein’s theory. He was the first person to work out a solution to Einstein’s equations, which showed that a singularity could form–and nothing, once it got too close, could move fast enough to escape a singularity’s pull.

Then, in 1939, physicists Rober Oppenheimer (of Manhattan Project fame, or infamy) and Hartland Snyder tried to find out whether a star could create Schwarzschild’s impossible-sounding object. They reasoned that given a big enough sphere of dust, gravity would cause the mass to collapse and form a singularity, which they showed with their calculations. But once World War II broke out, progress in this field stalled until the late 1950s, when people started trying to test Einstein’s theories again.

Physicist John Wheeler, thinking about the implications of a black hole, asked one of his grad students, Jacob Bekenstein, a question that stumped scientists in the late 1950s. As Mann paraphrased it: “What happens if you pour hot tea into a black hole?”

Apr 29, 2023

Strange Material Breaks a Classic Rule of Physics

Posted by in categories: materials, physics

An unusual semiconductor is making physicists rethink the science of extreme conditions.

Apr 29, 2023

Solving the dark matter mystery

Posted by in categories: cosmology, physics

Most of the matter and energy in the Universe are in mysterious, invisible forms that cannot be explained by physics as we know it. But it is possible for us to uncover the dark side of the Universe, and CERN physicist John Ellis knows how.

John Ellis is a Maxwell prize-winning theoretical physicist, and is considered one of the world’s leading physicists. John is currently Clerk Maxwell Professor of Theoretical Physics at King’s College London, and since 1978 has held an indefinite contract at CERN.

Apr 29, 2023

The fired Google engineer who thought its AI could be sentient says Microsoft’s chatbot feels like ‘watching the train wreck happen in real time’

Posted by in categories: physics, policy, robotics/AI, transportation

The Google employee who claimed last June his company’s A.I. model could already be sentient, and was later fired by the company, is still worried about the dangers of new A.I.-powered chatbots, even if he hasn’t tested them himself yet.

Blake Lemoine was let go from Google last summer for violating the company’s confidentiality policy after he published transcripts of several conversations he had with LaMDA, the company’s large language model he helped create that forms the artificial intelligence backbone of Google’s upcoming search engine assistant, the chatbot Bard.

Lemoine told the Washington Post at the time that LaMDA resembled “a 7-year-old, 8-year-old kid that happens to know physics” and said he believed the technology was sentient, while urging Google to take care of it as it would a “sweet kid who just wants to help the world be a better place for all of us.”

Apr 28, 2023

Memory Across Time & Space — Dr. Rupert Sheldrake, Biologist

Posted by in categories: evolution, habitats, physics, space

Dr. Rupert Sheldrake believes that memory is inherent to nature, and has spent the last forty years of his career investigating slippery, esoteric phenomena at the very edges of empiricism. Some of the results are intriguing — dogs that know when their owners have started the long journey home, crosswords that become easier to solve a few days after they’ve been published in the papers, IQ scores increase generation after generation. His work is ongoing, the territory marginal, and the implications immense.

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Apr 28, 2023

Spin-polarized spatially indirect excitons in a topological insulator

Posted by in category: physics

A topological insulator, Bi2Te3, has been found to have spatially indirect spin-polarized excitonic states, opening the prospect of combining exciton and topological physics.

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