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Category: physics – Page 156

Researchers have finally succeeded in building a long-sought nanoparticle structure, opening the door to new materials with special properties.

Alex Travesset does not have a sparkling research lab stocked with the most cutting-edge instruments for probing new nanomaterials and measuring their unique properties.

Instead of using traditional laboratory instruments, Alex Travesset, a professor of physics and astronomy at Iowa State University and an affiliate of the U.S. Department of Energy’s Ames National Laboratory, relies on computer models, equations, and figures to understand the behavior of new nanomaterials.

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Nearly 70 years after having his security clearance revoked by the Atomic Energy Commission (AEC) due to suspicion of being a Soviet spy, Manhattan Project physicist J. Robert Oppenheimer has finally received some form of justice just in time for Christmas, according to a December 16 article in the New York Times. US Secretary of Energy Jennifer M. Granholm released a statement nullifying the controversial decision that badly tarnished the late physicist’s reputation, declaring it to be the result of a “flawed process” that violated the AEC’s own regulations.

Science historian Alex Wellerstein of Stevens Institute of Technology told the New York Times that the exoneration was long overdue. “I’m sure it doesn’t go as far as Oppenheimer and his family would have wanted,” he said. “But it goes pretty far. The injustice done to Oppenheimer doesn’t get undone by this. But it’s nice to see some response and reconciliation even if it’s decades too late.”

Oppenheimer was born in New York City to German Jewish immigrants and studied physics under Ernest Rutherford at Cambridge, before earning his PhD from the University of Gottingen in 1927 under Max Born. He eventually joined the faculty at the University of California, Berkeley. When President Franklin D. Roosevelt approved the Manhattan Project and tapped Major General Leslie R. Groves to head it, Groves in turn chose Oppenheimer to lead the secret weapons laboratory in Los Alamos, New Mexico. True, Oppenheimer had left-wing political views, and hadn’t won a Nobel Prize (although he was nominated several times). But Groves felt the physicist had the breadth of knowledge to bring together physicists, chemists, engineers, and metallurgists, among other disciplines whose expertise would be crucial to the success of the project.

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Theoretical physicists from Warsaw and Oxford universities argue that a superluminal world possessing three temporal dimensions and one dimension in space could potentially change our concept of time, according to a new paper.

The researchers involved say they have developed “an extension of special relativity” that incorporates three individual time dimensions with a single space dimension, which helps explain how observations made by “superluminal” observers—inertial observers moving faster than the speed of light—might appear.

Within such a framework, the researchers argue that spontaneous events that can occur in the absence of a deterministic cause and other strange phenomena would be experienced by observers moving faster than the speed of light within a vacuum, concepts that potentially transform our concept of time as we know it.

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❤️ Check out Weights & Biases and sign up for a free demo here: https://wandb.com/papers.
❤️ Their mentioned post is available here: http://wandb.me/RLHF-OpenAI

Try #ChatGPT!
https://chat.openai.com/
https://openai.com/blog/chatgpt/

Our earlier paper with the translucent materials:

Separable Subsurface Scattering – Computer Graphics Forum 2015 (presented at EGSR 2015) – J. Jimenez, K. Zsolnai, A. Jarabo, C. Freude, T. Auzinger, X-C. Wu, J. von der Pahlen, M. Wimmer and D. Gutierrez

If you wish to read my latest paper on simulations that look almost like reality, it is available for free here:
https://rdcu.be/cWPfD

Or this is the orig. Nature Physics link with clickable citations:
https://www.nature.com/articles/s41567-022-01788-5

Tweet links:

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Most theories touch on how there are many different worlds, universes, dimensions, or whatever you would like to call them. Each one the same as our own, but also different in some way. For instance, in another world, you might be living the same life as you are now but perhaps politics had gone in a different direction. Maybe all of the presidents that were elected here in the US were opposite from how they are in our world. Maybe everything is the same except for you have different colored hair? The differences between worlds could be minuscule or extreme, it all varies.

While throughout the years many physicists and researchers, in general, have been trying hard to prove the existence of this kind of thing, it has proven to be quite the task. That being said, the concept itself has not been disproven. Now, what this article is about is a concept many do not realize is quite prevalent in these theories. We are all connected to these other worlds or universes. Each one might be separate from our own, but it has been suggested time and time again that when we experience things like déjà vu or peculiar dreams, we are getting a glimpse into one of these other worlds.

This meaning that when someone in another world is dreaming, they could be catching a glimpse into your world as well. Really think about it, if you have some kind of counterpart in another world, and he or she is dreaming they would be seeing perceptions of the lives you and all the others are living. Isn’t that mind-blowing and slightly terrifying? I guess in this sense, dreams are more or less portals.

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No one has yet managed to travel through time – at least to our knowledge – but the question of whether or not such a feat would be theoretically possible continues to fascinate scientists.

As movies such as The Terminator, Donnie Darko, Back to the Future and many others show, moving around in time creates a lot of problems for the fundamental rules of the Universe: if you go back in time and stop your parents from meeting, for instance, how can you possibly exist in order to go back in time in the first place?

It’s a monumental head-scratcher known as the ‘grandfather paradox’, but a few years ago physics student Germain Tobar, from the University of Queensland in Australia, worked out how to “square the numbers” to make time travel viable without the paradoxes.

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In this talk titled CYBERNETIC THEORY: THE CODE OF REALITY & OUR FUTURE AS CYBERGODS at the Rotary Club, The Grand Autograph Hotel, Novosibirsk, Russia, on July 19, 2022, I go over many topics such as evolutionary cybernetics, Digital Physics, consciousness, philosophy of mind, cybernetic theory, Omega Point cosmology, physics of time, simulation theory, the Global Mind, AGI, VR, Metaverse, Cybernetic Singularity, transhumanism, posthumanism, cybernetic immortality, synthetic telepathy, mind-uploading, neurotechnologies, Fermi Paradox, the Dark Universe (Dark Matter and Dark Energy), the Argument for Cybertheism. The main 45-minute slide presentation is followed by a 15-minute Q&A session… More.

Russian-American futurist Alex M. Vikoulov presents his published works in a talk titled CYBERNETIC THEORY: THE CODE OF REALITY & OUR FUTURE AS CYBERGODS at the Rotary Club, The Grand Autograph Hotel, Novosibirsk, Russia, on July 19, 2022. The main 45-min.

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A Kent team, led by Professors Ben Goult and Jen Hiscock, has created and patented a ground-breaking new shock-absorbing material that could revolutionise both the defence and planetary science sectors.

This novel protein-based family of materials, named TSAM (Talin Shock Absorbing Materials), represents the first known example of a SynBio (or synthetic biology) material capable of absorbing supersonic projectile impacts. This opens the door for the development of next-generation bullet-proof armour and projectile capture materials to enable the study of hypervelocity impacts in space and the upper atmosphere (astrophysics).

Professor Ben Goult explained: ‘Our work on the protein talin, which is the cells natural shock absorber, has shown that this molecule contains a series of binary switch domains which open under tension and refold again once tension drops. This response to force gives talin its molecular shock absorbing properties, protecting our cells from the effects of large force changes. When we polymerised talin into a TSAM, we found the shock absorbing properties of talin monomers imparted the material with incredible properties.’

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