Latest news with #ÖAW
Yahoo
04-08-2025
- Science
- Yahoo
Scientists Discovered a Way to Reverse Time—and Possibly Erase Mistakes
Here's what you'll learn when you read this story: In the physical world, time marches in one direction, but things aren't so straight forward in the quantum realm. Researchers have discovered that it's possible to speed up, slow down, or reverse the flow of time in a quantum system. This isn't exactly time travel, but is instead implementing or reverting to different quantum states from different points in time. In the subatomic universe of quantum physics, you can achieve things considered impossible in our flesh-and-blood physical world. Things like superposition, entanglement, and even teleportation all seem possible when things go quantum. Now, scientists from the Austrian Academy of Sciences (ÖAW) and University of Vienna are adding a kind of time travel to the list. In a series of papers published on preprint servers and in various online journals (including Optica, arXiv, and Quantum), researchers including ÖAW's Miguel Navascués and University of Vienna's Philip Walther explain the possibility of speeding up, slowing down, and even reversing the flow of time within a quantum system. Navascués compares the phenomenon to different movie-watching experiences. 'In a theater [classical physics], a movie is projected from beginning to end, regardless of what the audience wants,' he told the Spanish-language newspaper El País. 'But at home [the quantum world], we have a remote control to manipulate the movie. We can rewind to a previous scene or skip several scenes ahead.' The researchers achieved this by 'evolving' a single photon as it passes through a crystal. Using an experimental device called a 'quantum switch,' the single photon of light returns to its previous state before it ever makes the journey. In a way, this is less Doc Brown-style time travel and more about reverting or otherwise altering the states of quantum particles, or 'time translation' as Navascués described in 2020. However, this isn't exactly like a rewind button on your TV because usually, viewers can see how things got from plot point A to B—just sped up and in reverse. In quantum mechanics, however, simply observing a system causes it to change, which makes it impossible to track a system's progress through time. Crucially, these rewinding protocols still work because they can be performed without knowing what the changes were or its 'internal dynamics,' according to the scientists. And this quantum time machine doesn't just go one direction—Navascués said they've also hit upon a method for going forward in evolutionary time as well. He told El País: 'To make a system age 10 years in one year, you must get the other nine years from somewhere. In a year-long experiment with 10 systems, you can steal one year from each of the first nine systems and give them all to the tenth. At the end of the year, the tenth system will have aged 10 years; the other nine will remain the same as when the experiment began.' Sadly, these sci-fi findings in the quantum world can't be sized up to send humans backward and forward in time, because a single human represents a mind-boggling amount of information to 'rejuvenate'—in fact, the scientists estimate it would take millions of years to pull it off for just one second. But for the teams at ÖAW and the University of Vienna, the point isn't jetting off to the distant future, but the ability to increase the capability of quantum processors by arming them with the possibility of reversing errors in a system. After all, if life had a rewind button, wouldn't you use it? Get the Issue Get the Issue Get the Issue Get the Issue Get the Issue Get the Issue Get the IssueGet the Issue Get the Issue You Might Also Like The Do's and Don'ts of Using Painter's Tape The Best Portable BBQ Grills for Cooking Anywhere Can a Smart Watch Prolong Your Life? Solve the daily Crossword
Filipino Times
22-03-2025
- Science
- Filipino Times
Archaeologists discover remains of 5 mammoths in Austria, dating back 25,000 years
Archaeologists from the Austrian Academy of Sciences (ÖAW) have uncovered the remains of at least five mammoths in Langmannersdorf, Lower Austria. The site, located northeast of St. Pölten, is believed to have been a hunting ground used by ancient humans 25,000 years ago. Researchers found two main areas around 15 meters apart, each containing layers of bones, stone tools, and waste from tool-making. One area had remains of three mammoths, including tusks, but few large bones, indicating that ivory was likely processed on-site. Bones of dismembered mammoths and stone tools in excavation area 2. Courtesy: ÖAW-ÖAI/Marc Händel The second area lacked ivory but showed large bones and vertebrae from at least two more mammoths. Both sites had no rib bones, suggesting that the hunters sorted and used different parts of the mammoths separately. Evidence of fire pits and small pits in the area also showed that hunters stayed there for some time, processing meat and making tools. These signs point to the presence of Upper Paleolithic people, the group of humans living during the late Ice Age. Marc Händel, from the Austrian Archaeological Institute (ÖAI), explained that mammoth herds roamed the Perschling Valley as a grazing and transit route. He added that ancient hunters likely used this area to trap and butcher the animals.
ARN News Center
21-03-2025
- Science
- ARN News Center
25,000-year-old mammoth hunting site discovered in Austria
Archaeologists from the Austrian Academy of Sciences (ÖAW) have made a significant discovery in Langmannersdorf, Lower Austria, uncovering a prehistoric hunting ground used for mammoths. Excavations in this area, located northeast of St. Pölten, revealed the remains of at least five mammoths dating back 25,000 years, along with stone tools. Researchers believe that dozens of these animals were processed here, with their meat utilised and ivory crafted by ancient hunters. In February, a team led by Marc Händel from the Austrian Archaeological Institute (ÖAI) undertook further excavations slightly away from previous sites as part of the European research project MAMBA, which focuses on mammoth bone accumulations in Central Europe. \ They identified two zones, approximately 15 metres apart, containing multiple layers of bones, along with stone tools and waste from tool production. While neither zone contained complete skeletons, one area revealed remains of at least three animals, including intact and fragmented tusks, but few vertebrae and long bones. This suggests that ivory was likely processed there, possibly to create spear points. The second zone lacked ivory but included vertebrae and long bones from at least two additional mammoths. Notably, both locations lacked rib bones, indicating that the ancient hunters sorted the remains. Additionally, signs of Upper Paleolithic habitation have been found, such as fire pits and pits, which suggest that while butchering mammoths, the hunters remained in the area and left behind traces of their presence. Händel noted that 25,000 years ago, during the late Ice Age, mammoth herds roamed Central Europe, utilising the Perschling Valley in Langmannersdorf as a transit and grazing area.
Dubai Eye
20-03-2025
- Science
- Dubai Eye
25,000-year-old mammoth hunting site discovered in Austria
Share on Facebook Share on Messenger Share on Messenger Share on X Share on Whatsapp Archaeologists from the Austrian Academy of Sciences (ÖAW) have made a significant discovery in Langmannersdorf, Lower Austria, uncovering a prehistoric hunting ground used for mammoths. Excavations in this area, located northeast of St. Pölten, revealed the remains of at least five mammoths dating back 25,000 years, along with stone tools. Researchers believe that dozens of these animals were processed here, with their meat utilised and ivory crafted by ancient hunters. In February, a team led by Marc Händel from the Austrian Archaeological Institute (ÖAI) undertook further excavations slightly away from previous sites as part of the European research project MAMBA, which focuses on mammoth bone accumulations in Central Europe. \ They identified two zones, approximately 15 metres apart, containing multiple layers of bones, along with stone tools and waste from tool production. While neither zone contained complete skeletons, one area revealed remains of at least three animals, including intact and fragmented tusks, but few vertebrae and long bones. This suggests that ivory was likely processed there, possibly to create spear points. The second zone lacked ivory but included vertebrae and long bones from at least two additional mammoths. Notably, both locations lacked rib bones, indicating that the ancient hunters sorted the remains. Additionally, signs of Upper Paleolithic habitation have been found, such as fire pits and pits, which suggest that while butchering mammoths, the hunters remained in the area and left behind traces of their presence. Händel noted that 25,000 years ago, during the late Ice Age, mammoth herds roamed Central Europe, utilising the Perschling Valley in Langmannersdorf as a transit and grazing area.
