List of All Articles with Tag 'tec'

A scientist claims to have discovered a “gravitational anomaly” that calls into question our fundamental understanding of the universe. Astronomer Kyu-Hyun Chae from the university of Sejong University in South Korea made the discovery while studying binary star systems, which refer to two stars that orbit each other. His observations appear to go against the standard gravitational models established by Isaac Newton and Albert Einstein, and instead offer evidence that an alternative theory first proposed in the 1980s may explain the anomaly. Analysis of data collected by the European Space Agency’s Gaia space telescope revealed accelerations of stars in binaries that did not fit the standard gravitational models. At accelerations of lower than 0.1 nanometres per second squared, the orbit of the two stars deviated from Newton’s universal law of gravitation and Einstein’s general relativity. Instead, Professor Chae theorised that a model known as Modified Newtonian Dynamics (MOND) could explain why these previous theoretical frameworks were unable to explain the stars’ movements. “The deviation represents a direct evidence for the breakdown of standard gravity at weak acceleration,” Professor Chae wrote in a paper, titled ‘Breakdown of the Newton-Einstein standard gravity at low acceleration in internal dynamics of wide binary stars’, that was published in The Astrophysics Journal.. His research calls into question the existence of dark matter and other peculiar space phenomena that are typically used to justify irregularities with Newton-Einstein standards. “The data reveal an unambiguous and extremely strong signature of the breakdown of the standard Newton-Einstein gravity at weak acceleration,” the study concluded. “What is even more surprising is that the trend and magnitude of the gravitational anomaly agree with what the AQUAL [MOND] theory predicts.” Professor Chae predicts that his results will be confirmed and refined with larger data sets in the future, which could lead to a new revolution in physics. “Chae’s finding is a result of a very involved analysis of cutting-edge data, which, as far as I can judge, he has performed very meticulously and carefully,” said theoretical physicist Mordehai Milgrom at the Weizmann Institute in Israel, who first proposed the MOND model 40 years ago. “But for such a far-reaching finding – and it is indeed very far-reaching – we require confirmation by independent analyses, preferably with better future data. “If this anomaly is confirmed as a breakdown of Newtonian dynamics, and especially if it indeed agrees with the most straightforward predictions of MOND, it will have enormous implications for astrophysics, cosmology, and for fundamental physics at large.” Pavel Kroupa, professor at Charles University in Prague, added: “The implications for all of astrophysics are immense.” Read More Perseids 2023: Meteor beacon offers unique way to observe spectacular shower over UK Slack announces its biggest ever update Why you might never have to remember your password again AI can predict Parkinson’s subtype with up to 95% accuracy, study suggests

TOKYO Japan plans to create tax breaks for domestically-made electric vehicle (EV) batteries and semiconductors from April 2024

A US cybersecurity advisory panel will investigate risks in cloud computing, including Microsoft Corp.’s role in a recent

By Blake Brittain The California Institute of Technology has reached a "potential settlement" in a high-stakes patent infringement

The Biden administration on Thursday defended its communications with social media giants in court, arguing those channels must stay open so that the federal government can help protect the public from threats to election security, Covid-19 misinformation and other dangers.

A former managing director at Goldman Sachs Group Inc. who recently became one of the very few female

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By Daniel Wiessner A China-based tutoring company has agreed to settle a U.S. government agency's novel lawsuit claiming

Portable mobile hotspots have arrived in Maui to help bring internet service to the thousands of people who may have been unable to call for help since the wildfires started to rage out of control on the island.

Argentines will head to the polls in a nationwide primary election on Sunday, with traders watching closely for

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Slack has launched its biggest ever redesign, aimed at tidying up people’s conversations and introducing them to new features. The workplace chat app has gone through a number of changes since it was first launched almost exactly 10 years ago. Many of those updates have come in recent years, amid an increased focus on the platform as a way of connecting remote workplaces. But Slack’s newest update brings a host of changes – and aims to bring people’s attention to the existing changes that might have gone unnoticed. By default, the new design keeps the same fundamental look as Slack currently. It has the purple colour that has ben associated with the app, and the flow of conversations has stayed much the same, though the update brings new ways of customising the aesthetic. But the most obvious change is the introduction of a new sidebar, that organises different kinds of chats and other information. Gathered into options for “Home” and “Later”, for instance, are all of the chats and information that users might have. Similarly, an “Activity” feed combines the various ways that people might get in touch with a user: threads, mentions and reactions. They willall now be stuck together in one view. In this way, the new version of Slack borrows heavily from its competitor, Microsoft Teams. That app has long offered a DMs section that offers easy access to all the recent conversations, and a separate space in which to see those chats. The change also helps unify multiple workspaces. Some larger companies organise their various divisions or teams into different workspaces – so that the large company might separate sales and IT teams, or similar – and until now those have been separated and required clicking between different groups. The other major change is a new + button that will appear in the bottom of the screen, and replaces the one to start new messages. That also unifies a host of features: clicking that will give the option not only to start new chats, but also calls and the “canvas” tool that can be used to collaboratively gather information but was previously difficult to discover. Read More Slack goes down, disrupting workplaces for second time in a week Why you might never have to remember your password again AI can predict Parkinson’s subtype with up to 95% accuracy, study suggests