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Archive for the ‘physics’ category: Page 67

Feb 26, 2023

Astrophysicists Chart Source of Asteroid That Killed Dinosaurs

Posted by in categories: asteroid/comet impacts, existential risks, physics

A new model explains a possible route for the extraterrestrial rock before it blasted Earth.

Feb 26, 2023

We discovered what Black Holes are made of! #blackhole #space #universe

Posted by in categories: cosmology, physics

A group of physicists may have discovered that black holes are actually made of and not only that but they may be responsible for the expansion of the universe itself.

Links to the research findings:
https://iopscience.iop.org/article/10.3847/2041-8213/acb704
https://iopscience.iop.org/article/10.3847/1538-4357/acac2e

Feb 26, 2023

Scientists have successfully recorded brain activity from freely moving octopuses

Posted by in categories: biological, neuroscience, physics

Dr. Tamar Gutnick, first author and former postdoctoral researcher in the Physics and Biology Unit at the Okinawa Institute of Science and Technology (OIST), said, “If we want to understand how the brain works, octopuses are the perfect animal to study as a comparison to mammals. They have a large brain, an amazingly unique body, and advanced cognitive abilities that have developed completely differently from those of vertebrates.”

Octopuses have eight powerful and ultra-flexible arms, which can reach anywhere on their body. If we tried to attach wires to them, they would immediately rip it off, so we needed to get the equipment out of their reach by placing it under their skin.”

Continue reading “Scientists have successfully recorded brain activity from freely moving octopuses” »

Feb 24, 2023

Scientists Defy Physics, Basically Pull Energy Out of Thin Air

Posted by in categories: energy, physics

That’s not supposed to happen.

Feb 24, 2023

Physicists give the first law of thermodynamics a makeover

Posted by in categories: energy, physics, space

West Virginia University physicists have made a breakthrough on an age-old limitation of the first law of thermodynamics.

Paul Cassak, professor and associate director of the Center for KINETIC Plasma Physics, and graduate research assistant Hasan Barbhuiya, both in the Department of Physics and Astronomy, are studying how energy gets converted in superheated plasmas in .

Their findings, published in Physical Review Letters, will revamp scientists’ understanding of how plasmas in space and laboratories get heated up, and may have a wide variety of further applications across and other sciences.

Feb 24, 2023

Hoffman Λ Vervaeke: Redefining Reality

Posted by in categories: evolution, neuroscience, physics

John Vervaeke and Donald Hoffman talk about infinity, ego, death, non-dualism, and what is reality. Sponsors:
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Feb 24, 2023

Webb telescope makes a surprising galactic discovery in the distant universe

Posted by in categories: physics, space

“These objects are way more massive than anyone expected,” said study coauthor Joel Leja, assistant professor of astronomy and astrophysics at Penn State University, in a statement. “We expected only to find tiny, young, baby galaxies at this point in time, but we’ve discovered galaxies as mature as our own in what was previously understood to be the dawn of the universe.”

The telescope observes the universe in infrared light, which is invisible to the human eye, and is capable of detecting the faint light from ancient stars and galaxies. By peering into the distant universe, the observatory can essentially see back in time up to about 13.5 billion years ago. (Scientists have determined the universe is about 13.7 billion years old.)

The operations center for the telescope is in Baltimore City, at the Space Telescope Science Institute on the Johns Hopkins campus.

Feb 23, 2023

Scientists make a rare find: A Solar system with three Super-Earths

Posted by in categories: physics, space

Three Super-Earths and two Super-Mercuries, a type of planet that is extraordinarily rare and distinct, haʋe Ƅeen found in a star systeм Ƅy astronoмers. Super-Mercuries are so uncoммon—only eight haʋe Ƅeen found so far—that they are extreмely rare.

ESPRESSO’s spectrograph detected two ‘super-Mercury’ worlds in the star systeм HD 23472. Astronoмers haʋe discoʋered that these planets are extreмely rare. This study, puƄlished in Astronoмy &aмp; Astrophysics, looked at how the coмposition of tiny planets ʋaries with planet position, teмperature, and star attriƄutes.

The reason for oƄserʋing this planetary systeм, according to Susana Barros, a researcher at the Institute of Astrophysics e Ciências do Espaço (IA) who led the project, is to characterise the coмposition of sмall planets and to study the transition Ƅetween haʋing an atмosphere and not haʋing an atмosphere.

Feb 22, 2023

A special carbon molecule can function as multiple high-speed switches at once

Posted by in categories: computing, physics

For the first time, an international team of researchers, including those from the University of Tokyo’s Institute for Solid State Physics, has demonstrated a switch, analogous to a transistor, made from a single molecule called fullerene.

By using a carefully tuned laser pulse, the researchers are able to use to switch the path of an incoming electron in a predictable way. This switching process can be three to six orders of magnitude faster than in microchips, depending on the laser pulses used. Fullerene switches in a network could produce a computer beyond what is possible with electronic transistors, and they could also lead to unprecedented levels of resolution in microscopic imaging devices.

More than 70 years ago, physicists discovered that molecules emit electrons in the presence of electric fields, and later on, in certain . The electron emissions created patterns that enticed curiosity but eluded explanation. This has changed thanks to a new theoretical analysis, the ramification of which could not only lead to new high-tech applications, but also improve our ability to scrutinize the physical world itself.

Feb 22, 2023

The mind-bending physics of time | Sean Carroll

Posted by in categories: cosmology, neuroscience, physics, time travel

How the Big Bang gave us time, explained by theoretical physicist Sean Carroll.

Up next, The Universe in 90 minutes: Time, free will, God, & more ► https://youtu.be/tM4sLmt1Ui8

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