fidzu : computers

Researchers have found that tiny electrical charges picked up by moving water droplets may be damaging cars and buildings like the Eiffel Tower. In experiments, thousands of charged droplets degraded Teflon and corroded the copper beneath it, while uncharged droplets caused no comparable damage. C&EN reports: For years, researchers at the Max Planck Institute for Polymer Research have studied how water droplets from rain, dew, ocean waves, and melting snow become electrically charged. They say the process is like tribocharging, which causes static when we rub certain objects together, such as a balloon on our hair or a sweater on our skin. "Water drops spontaneously become electrically charged when moving on different surfaces, such as plant leaves, insect wings, building walls, window glass, and plastic. This process, known as contact or sliding electrification, is analogous to tribocharging between solids," says study coauthor Zhongyuan Ni, a PhD candidate at Max Planck. "Water drops getting charged is not a new phenomenon, but for the past 200 years, people have not paid attention to this," Ni says. In 2023, Ni and colleagues set out to determine whether electrically charged water droplets affect the surfaces they contact. To find out, the team poured water over four common surfaces -- a plant leaf; polyvinyl chloride foam board; polystyrene glass; and perfluoro octadecyltrichlorosilane (PFOTS), a commonly used water-repelling coating -- and let it drip onto sheets of Teflon-coated copper tilted at 50 degrees. When the experiments began, the team would allow only a few dozen drops to fall onto the copper before using electron microscopy to examine it. The researchers repeatedly failed to find any evidence of decay. But one day, Ni just let the drops keep falling. "After thousands of drops, it looked like the drops were pinning onto the surface," he says. After inspecting the copper under the microscope, Ni got his first glimpse of the destructive strength of electrically charged water drops. After repeating the experiment several times with thousands rather than dozens of drops, the researchers found that the electrified water drops not only broke down the Teflon coating but also corroded the underlying copper. Up close, the copper sheets looked like scraped-up skin. But when the experiment was conducted with nonelectrified drops, neither the copper nor its Teflon coating was any worse for wear. Even though the drops contained only around 0.2 to 2.0 nanocoulombs of charge -- around one billionth of a standard unit -- the impact of the charged drops was significant. "The finding is important because it suggests that the electrical state of a water droplet, not just its chemical composition, acidity, or mechanical impact, can influence how corrosion begins," says Guangwen Zhou, a professor of mechanical engineering at Binghamton University who was not involved in the study. "This perspective could open up new approaches to designing protective coatings and materials that are more resistant to corrosion in environments where charged water droplets are present."

Read more of this story at Slashdot.

01 Sep 2026 7:00am GMT

An anonymous reader quotes a report from Ars Technica: President Trump yesterday demanded that the Federal Communications Commission punish or rebuke an NBC journalist for saying he has "mixed results" in his election endorsements. In the latest example of how Trump is using the FCC to harass reporters and news organizations that he dislikes, he said Meet the Press host Kristen Welker "will be reported to the FCC for rebuke or punishment" for what he claimed was a "purposeful inaccuracy." "Kristen Welker, the Unpopular 'Hostess' of the once great Meet the Press, now considered Meet the Fake Press, just stated that Donald Trump has 'mixed results' on his Endorsements of Candidates, when the recent WINS of Darline Graham and Mike Mazzei, stand at 100% for the U.S. Senate, and 98% for the U.S. House, recently and over the longterm. How can anyone be allowed to say this, working for freely given Public Airwaves? Results are attached. Because of this purposeful inaccuracy, she will be reported to the FCC for rebuke or punishment," Trump wrote in a Truth Social post. A separate post from Trump yesterday said, "THE FAKE POLLS USED BY OUR CROOKED MEDIA ARE OUT OF CONTROL, AND SOMETHING MUST BE DONE ABOUT IT. FCC TO THE RESCUE! President DJT." Trump also posted a rant on Friday about New York Times journalist Maggie Haberman, calling her "an unattractive person both inside and out" who "should be forced to turn over any and all money that she's made through her fake reporting on me." Trump referred to Haberman throughout his post as "Maggot Haberman." Trump's post about Welker included an image purporting to show he has near-perfect results in his endorsements this year. "The Press is a Disgrace to our Nation, and I hope that Chairman Brendan Carr, and the fine people of his Commission, will take this Threat to our Country very seriously," Trump wrote. Perhaps indicating that he will refer additional journalists for FCC punishment, Trump wrote that Welker "is not the only one. The Radical Left News is going out of their way to harass, demean, and libel anything 'TRUMP.'" The FCC website says the commission "cannot prevent the broadcast of any particular point of view," and that it "generally will not intervene" in complaints about "one-sided news reports" because "it would be inconsistent with the First Amendment to replace the journalistic judgment of licensees with our own." As noted by Ars, FCC Chairman Brendan Carr has "made it clear he takes orders from Trump, abandoning his previous position -- which he held under Democratic presidents -- that the FCC must operate independently of White House interference." Carr could use the commission's regulatory authority over licensed broadcasters to open an investigation into Welker, potentially creating pressure on NBC and its affiliated stations through licensing proceedings or other FCC actions. The most likely vehicle would be the FCC's rarely enforced news distortion policy, which Carr has repeatedly revived to target coverage he considers misleading; historically, however, the policy required an unusually high evidentiary bar and was seldom enforced.

Read more of this story at Slashdot.

01 Sep 2026 3:30am GMT

It's the lightest Bentley in 85 years.

31 Aug 2026 11:01pm GMT

The FTC and 22 state attorneys general are suing Amazon, accusing the company of secretly inflating advertising prices through undisclosed changes to its auction system that may have extracted more than $20 billion from advertisers since 2019. "Amazon has millions of advertising customers who were misled into paying significantly higher prices," FTC Chairman Andrew Ferguson said in a statement. "These higher costs were largely passed on to American consumers." CNBC reports: The complaint, which was filed in U.S. District Court for the Western District of Washington, centers on Amazon's sponsored products ads, brands ads and display ads that run alongside search results on its sprawling webstore. Amazon has amassed the third-largest digital advertising business globally, trailing only Google and Meta. The company hauled in more than $68 billion in ads revenue last year, with the lion's share coming from sales of sponsored products ads. Third-party sellers who hawk their wares on Amazon's marketplace have recently criticized surging advertising costs on the site, including a string of recent policy changes, which led to some top merchants withholding their ad spend in a boycott. The company has traditionally used a "second-price" auction system, wherein it told advertisers they "only pay the least bid amount needed in order to win," the complaint states, citing Amazon's own marketing materials. The FTC alleges in its complaint that Amazon in 2019 changed its auction rules without notice by adding an undisclosed surcharge it referred to as a "soft reserve price," which led to higher ad prices. "Amazon made this surreptitious change to its auction because it was unhappy about how much revenue its advertising auctions were generating," the agency said in its complaint, which cites internal communications between Amazon ad executives. In one exchange, a company executive allegedly acknowledged it uses an "invented auction participant" to increase prices, the FTC said. The FTC and the states alleged Amazon's practices violate federal and state consumer protection laws, and they're seeking civil penalties, restitution and other unspecified damages. In a blog post, Amazon called the FTC's lawsuit "misguided" and said the complaint "fundamentally misunderstands how advertisers operate." The company added that the agency's lawsuit doesn't include evidence of consumer price increases. "We've provided advertisers with guidance about our auctions and pricing in the main tools they use to manage their campaigns, and we continue to update that guidance," the company said. "We look forward to making our case in court."

Read more of this story at Slashdot.

31 Aug 2026 11:00pm GMT

The CDC has tallied nearly 30,000 confirmed and probable cases this summer.

31 Aug 2026 9:23pm GMT

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31 Aug 2026 9:12pm GMT

Virtually all laptop speakers suck. It's the one area where even really expensive laptops tend to fall on their ass, leaving users with a tinny, harsh, and hollow sound experience. While you can't exactly overcome physics - laptop speakers are necessarily small and thus just cannot ever sound as good as proper speakers - there's a lot you can do with proper tuning and software magic. If you're a desktop Linux user, you actually already possess all the plumbing needed to fix your audio; it's just not exposed to you in any way. Luckily, an application called EasyEffects allows you to actually make use of desktop Linux' advanced audio features to massively improve the sound quality of your laptop's speakers. EasyEffects' own description on its GitHub page doesn't really explain what it does or what it's capable of, so here's the description from Wikipedia instead. EasyEffects uses PipeWire to process incoming and outgoing audio streams independently and can apply various sound effects in the form of plug-ins made by different developer teams such as Calf Studio Gear, MDA.LV2 and GStreamer. All plugins have their own presets and can be applicable inside the suite rather than having to use a different mixer or executing a script from the command line. Available output effects are limiter, auto volume, compressor of dynamic range, filter, 30 bands parametric equalizer, bass enhancer, exciter, reverbation, crossfeed, delay, maximizer and spectrum analyzer. Available input effects are WebRTC, limiter, compressor, filter, equalizer, de-esser, reverbation, pitch shift and spectrum analyzer. ↫ EasEffects' Wikipedia page None of this matters, and you can forget everything from these two paragraphs. What matters is that using EasyEffects, you can tune the audio coming out of your speakers to make them sound a lot better. The few laptops on the market that do have decent audio - MacBooks, some Dell XPS laptops, and surely a few more - aren't magically defying physics. While they probably do have objectively higher-quality speakers, the main difference between those laptops and laptops with crappy-sounding speakers is that the former come with built-in tuning from the factory to make them sound much better than they would without any software trickery. If you know your way around audio, you can very much use EasyEffects and tune your laptop speakers from scratch to massively improve how they sound. However, that requires time, experience, knowledge, and expertise that most people lack, including myself. Lucky for us, though, there are countless downloadable presets out there for EasyEffects designed specifically to make laptops sound better. In an ideal world, you'd pick a preset created specifically for your laptop make and model, but odds are you won't find one, so for most laptops you'll have to settle for a generic preset that tries to do its best. I've long settled on the Advanced Auto Gain.json preset from JackHack96, which greatly improves the audio performance on any laptops I've tried it on, but of course, there's countless other presets for you to try to see if there's anything that suits your particular laptop and ears better. Getting all of this up and running is really easy. EasyEffects is most likely packaged by your Linux distribution, and the latest version is always available as a Flatpak from Flathub. Download the preset(s) you want to try, copy them either to ~/.config/easyeffects (if you use your distribution's package) or to ~/.var/app/com.github.wwmm.easyeffects/data/easyeffects/output/ (if you use the Flatpak version). They'll show up right away in the Presets tab in EasyEffects, ready to be turned on and off whenever you want, making it very easy to compare and contrast to find the one you like best. EasyEffects can live in your system tray giving you easy access to your presets without having to open the main window, and it can be set to start automatically at boot. EasyEffects can also be turned on and off on the fly. There's obvious downsides to all of this, too, of course. First, since you're most likely going to be using a generic preset not specifically crafted for your laptop, there's no guarantee the results will be positive for you. Second, not every preset is ideal for every type of audio. Most of my audio consists of YouTube videos with mostly speech; if you listen mostly to music, different presets may yield better results. Third, audio quality is deeply subjective, and what sounds good to my ears may sound like total garbage to yours. Fourth, EasyEffects does take up a tiny fraction of CPU power (I'm talking 0.1-0.2% according to KDE's System Monitor), but I have never seen it have any noticeable performance impact on anything. Even the generic preset I use makes such a massive difference for me on every laptop I've ever tried it on, that I've become convinced EasyEffects and a few of the generic presets should be installed by default by any desktop-oriented Linux distribution. On top of that, Linux laptops OEMs like System76, Nova Custom, Star Labs, and so on, should really take the time to create proper presets for their laptops to improve their sound quality out of the box. I feel like if you're already designing and selling laptops, you probably also have the skills and means to create a decent preset. In fact, I'd take it a step further and urge desktop environments like KDE and GNOME to properly integrate EasyEffects into their sound settings. They shouldn't include the entire application and its user interface, but should make it so that you can configure and manage presets right from the sound settings panels, and switch between presets from their volume applets (as well as turn it off entirely, of course). This would leave the full EasyEffects application for people who need more control, manual tuning, and more advanced features. There's absolutely no reason why speakers on Linux laptops should sound tinny, harsh, and hollow. The Linux desktop has all the technologies and features built right in to make speakers sound much better than they do without any tuning,

27 Aug 2026 8:18pm GMT

Built on a 2 nanometer technology node, the processor's design will contain 11 high-performance cores operating at more than 5.7 GHz, AI inference accelerators for in-transaction fraud detection, a dedicated on-chip data processing unit for I/O acceleration, and a large cache architecture for demanding enterprise workloads. The chip is architected to not contain separate Arm and IBM cores: each processor core can natively execute Arm and IBM Z, or Arm and LinuxONE, instructions concurrently while prioritizing the platform's established performance, security, encryption, and availability characteristics. IBM Z and LinuxONE platforms are capable of scaling to hundreds of cores and tens of terabytes of memory. ↫ IBM press release IBM is still doing some amazing chip architecture design. ServeTheHome has more details of how this works: A key choice here is that IBM implemented AArch64 in full hardware rather than through translation. This design uses a little-endian Arm implementation alongside big-endian z/Architecture, with AArch64 v9.3, SVE and SVE2 support, and 2,792 implemented AArch64 instructions. IBM also claims Arm SystemReady compliance, which matters for how much off-the-shelf Arm software this core can absorb. This is absolutely crazy technology. Arm software sees a native Arm processor. Arm runs unmodified, out-of-the-box, and onto a standard Arm platform. IBM said the 2792 AArch64 instructions are more than twice the Z instructions. IBM made a funny quip about "reduced" in RISC. ↫ Patrick Kennedy at ServeTheHome This is bonkers technology. We can only dream of this ever serving a home.

27 Aug 2026 2:30pm GMT

It's always a special day on OSNews when Haiku has a new release. While OSNews was founded in 1997, it wasn't until 2001, when Eugenia took over and relaunched the site, that we really got going. Eugenia came from BeNews, a popular BeOS news website, which shut down in the wake of Be, Inc's infamous "focus shift" away from BeOS as a general purpose desktop operating system. BeOS continues to have a special place on OSNews ever since. Today marks the release of Haiku R1/beta6, the first official Haiku release in two years. As such, this new beta covers a monumental amount of progress since beta5, progress I've reported on diligently. The highlights of this new beta include a port of Firefox (including branding) and many of its forks, much improve support for Qemu, a new memory allocated largely based on the one from OpenBSD, and improved support for various filesystems. Of course, there's a massive list of performance improvements, memory management changes, as well as a truly massive number of new application ports. It's important to note, as I usually do, that while these Haiku beta releases serve as patches of calm in rough seas, Haiku is generally stable and capable enough that using the project's nightly releases is usually a totally acceptable way of installing and running the operating system. If you're not comfortable running nightly releases, however, and haven't tried Haiku since the previous beta, you're in for a massive overall improvement. Everybody loves Haiku.

27 Aug 2026 11:31am GMT

Over the last few weeks, we have been doing research on the integration of our official distribution packages when installed on a target system. In this context we have been looking at the current uses of alpm-install-scriptlet(5) files and alpm-hooks(5) in around 120 package source repositories (alpm-source-repo(7)) to better understand the underlying functionality and use-cases these two integrations offer and target. In this article we are going to look at how these two systems work, how Arch Linux is currently using them and attempt to provide suggestions for when to use which. Learning about alpm-hooks(5) and alpm-install-scriptlet(5) files …

09 Aug 2026 12:00am GMT

This is just a short note on my blog that I have resigned from Arch Linux a package maintainer, developer and security team. I've spent around 10 years as an AUR maintainer, security team, Package Maintainer and then Developer. I implemented support for debug packages, did the initial POC work that would become the git migration and even somehow managed to pull of an online conference during The Plague with the help of others.

01 Aug 2026 12:00am GMT

Good morning from JetBrains Berlin office!

01 Jun 2026 12:00am GMT