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Back in 1832, the celebrated British physicist, Michael Faraday, carried out a set of experiments designed to answer a tantalizing question: could electricity be generated by Earth's rotation through its own magnetic field? The intriguing possibility arises because Earths magnetic field does not rotate with the Earth like a physical object. Instead, it is created at each instant and remains essentially fixed in space. So the thinking at the time was that perhaps Earths movement through it could generate power. But Faradays experiments were a resounding failure and a few years later, physicists worked out why. Any movement of a conductor through this magnetic field does indeed produce a force on the electrons within it. But this force redistributes the electrons, generating another field that exactly cancels out the effect of the original one. So if the entire power-generating circuit lies within the field, nothing happens.But there is a loophole in this reasoning, say Christopher Chyba, at Princeton University in New Jersey and colleagues. In 2016, they pointed out that it assumes the magnetic field changes almost instantaneously in the conducting material. But in certain kinds of soft magnetic materials, changes in the field diffuse through it more slowly. And when that happens, it may be possible to exploit the effect to generate power using conductors with carefully shaped geometries. Now Chyba and co have shown that such a conductor can extract electrical energy directly from Earth's rotation through its own magnetic field.Their experiment is relatively simple. It turns out that one geometry that ought to work is a cylindrical shell attached to a circuit. They manganese-zinc ferrite, as the "soft" magnetic material with the necessary magnetic diffusion and crafted it into a cylindrical shell, about the size of a large flashlight. Their theory predicts that the shell should generate power a few microvolts and associated current when it is oriented perpendicular to the Earths movement. That this should drop to zero when the shell is rotated 90 degrees so it is parallel to the Earths movement. And that when the shell is rotated a further 90 degrees, the power should increase again, but with the current and voltage in the opposite direction.In carefully controlled laboratory experiments, thats exactly what the team of researchers obaerved. This small demonstration system generates a continuous DC voltage and current of the (low) predicted magnitude, noted Chyba and colleagues. By contrast, a similarly-sized solid cylinder showed no measurable voltage at any orientation.Critically, the team controlled for various confounding effects, such as thermoelectric voltages caused by temperature gradients and external electromagnetic interference. They performed the experiment in their lab, where conditions can be carefully controlled and in a nearby residential location, where conditions were less easily controlled. In both sets of tests, the result was the same the set up produced a small amount of power extracted from the Earths rotation through its own field. Thats interesting work with significant implications. Although the power output is small, scaling this technology could lead to specialized power-generation methods for remote sensing installations. Even if only voltages far below those for residential power were achievable using our effect, such devices might still have practical applications as batteries that would require no fuel and could not wear out in the usual sense, say Chyba and colleagues. One intriguing possibility to boost voltages is to miniaturize the cylindrical shells and make arrays of them connected in series. And in scenarios with greater relative velocity to the magnetic field such as satellites orbiting Earth significant power generation could be achievable.Power ScalingChyba and colleagues point out that generating power in this way would inevitably slow Earths rate of rotation but that the effect would be tiny. Even in an extreme scenario where our civilization somehow would obtain all its electrical energy from the effect described here, Earths rotation would slow by <1 millisecond per decade, they say.By comparison, the length of Earths day naturally fluctuates by several milliseconds per decade. Earth is also despinning due to exchange of angular momentum with the Moon, lengthening Earths day currently by 2.5 milliseconds per century, they say. But first, other groups will need to confirm the effect elsewhere. The next step would be for an independent group to reproduce (or contradict) our results, say Chyba and co.If they are successful, its not hard to imagine the commercialization of this technology in the not-too-distant future.Ref: Experimental demonstration of electric power generation from Earth's rotation through its own magnetic field: www.arxiv.org/abs/2503.15790

Perhaps you havent heard, but Amazons Big Spring Sale officially starts tomorrow. But, this best smart oven is on sale for 25 percent off right now. That brings it down from $399 to $299, which is as cheap as I have ever seen it. You could call this an air fryer, but thats an understatement. It does everything from baking to broiling with help from Brevilles smart cooking system. Its a full-fledged part of a smart home setup. Plus, other models are on sale if want something cheaper or fancier.Breville Smart Oven Air Fryer Pro $299 (was $399)BrevilleSee ItWhile $299 is definitely still an investment, I have basically replaced my oven and my air fryer with this single device. It has a total of 13 cooking modes, including air frying, traditional baking, a dedicated pizza oven mode, a keep warm setting, and more. The capacity is large enough to accommodate an entire turkey. Its smaller than a traditional oven and manage airflow much more effectively, so it often cooks things much more quickly and with a lot less energy expenditure than turning on the full-sized oven.Five internal quartz heating elements take orders from a built-in processor, which helps put heat right where the food needs it most. As a result, this smart oven can make food crispier, and more evenly heated than a traditional oven. Movable racks allow you to change up the internal arrangement for quicker cooking or maximum capacity. Breville Mini Smart Oven $127 (was $159)BrevilleSee ItIf youre not looking to spend $299 on the Pro model, you can get this mini version for $127. It offers eight cooking functions powered by Brevilles Element IQ smart cooking system. It wont fit a turkey, but it will easily fit a frozen (or fresh) pizza and pretty much anything else youd otherwise cook in an air fryer. Operation is simple, relying on a pair of dials and a light-up LED display. If youre just looking to cook pizza rolls in a quick and classy way, this oven is tough to beat. More Breville smart oven dealsBreville Smart Oven Air Fryer BOV860BSS $279 (was $349) Breville Smart Oven Air Fryer BOV860BTR, Black Truffle $279 (was $349)Breville Smart Oven Air Fryer BOV860DBL, Damson Blue $279 (was $349)Breville Smart Oven Air Fryer BOV860RVC, Red Velvet Cake $279 (was $349)Breville the Smart Oven Air Fryer BOV860BST, Black Stainless Steel $279 (was $349)Breville Smart Oven Air Fryer BOV860OLT, Olive Tapenade $279 (was $349)The post I use this Breville smart oven every day and Amazon has it cheaper than ever right now appeared first on Popular Science.

Toll services like I-Pass in Illinois won't contact you through texting. Credit: Deposit PhotosOnline scammers are constantly evolving their tactics and methods, but one approach has gained popularity in recent months: text messages that claim you owe unpaid traffic tolls.Your toll balance is outstanding, reads one such iMessage. If you fail to pay by you will face penalties or legal action. The text then instructs a victim to reply with Y for yes, open the accompanying link in an internet browser, and follow payment steps from there.If you receive a text like this one, just delete it. Credit: Popular Science Law enforcement refers to the scam technique as smishing, a combination of the word phishing and SMS, the software protocol used by text message services. Other smishing examples include texts from unknown numbers alerting alleged bank fraud, missed delivery notifications, and gift card rewards. But with the increased adoption of cashless highway toll payment systems and phone-based financial transactions, scammers are increasingly turning to the unpaid toll angle for their ploys.According to an internet crime complaint report cited by CNBC, the FBI received over 60,000 reports of unpaid toll scams in 2024. However, the true number of attempts is almost certainly underreported by a wide margin according to the Federal Trade Commission. Multiple federal and state agencies have issued warnings against the smishing attacks in recent months, as well. These texts often claim to come from some of the nations most prominent toll service networks, such as the Northeasts E-ZPass, Californias FasTrak, and I-Pass in Illinois.Consumers should know that E-ZPass, or Tolls by Mail, will never send a text or email requesting personal, sensitive information, New York Governor Kathy Hochul explained in an alert issued in February. The same goes for FasTrak, I-Pass, and virtually any other reputable toll service in the US. Get the Popular Science newsletter Breakthroughs, discoveries, and DIY tips sent every weekday. By signing up you agree to our Terms of Service and Privacy Policy.So, do you need to worry if you begin receiving a flurry of toll texts? The answer is yes and no, unfortunately.On the one hand, simply getting the messages doesnt mean your bank account is at risk. The best thing to do is report the text as the junk it is, delete it, and even block the number for good measure.On the other hand, an uptick in spam, phishing, and smishing attempts sometimes means a recent data leak included your phone number or email address. Scammers often purchase these datasets through black market websites and forums in order to mass target potential victims. While annoying, that in and of itself isnt necessarily cause for alarm.Thankfully, youre not entirely powerless here. There are a number of proactive methods available to guard your personal info against con artists, like the digital toolkits provided by the Electronic Frontier Foundation and the FTC. Phone carriers also offer tools to beef up your call and text filters. And dont worryany actual highway toll notices will almost certainly find their way to you. They just usually take the form of a letter in the mail.

NewsHealth & MedicineAvoidable deaths increased in the U.S. as they dropped elsewhereCompared with European Union countries and others, the United States is an outlier While avoidable deaths in the United States rose, on average, from 2009 to 2019, they trended down for European Union countries and others.David Sacks/Getty ImagesBy Aimee Cunningham1 hour agoIn the United States, the number of deaths that didnt have to happen has risen over time.From 2009 to 2019, the average rate of avoidable deaths rose by 33 per 100,000 people across the country, researchers report March 24 in JAMA Internal Medicine. Meanwhile, other countries trended down: Members of the European Union experienced an average decrease of 24 per 100,000 over the same time period. And countries that are part of the Organization of Economic Cooperation and Development which come from North America, South America, Europe and Asia reported an average decrease of 19 per 100,000.

Nature, Published online: 24 March 2025; doi:10.1038/d41586-025-00897-4As glaciers begin to disappear, technological fixes to slow or halt ice melt are emerging. But regulations are urgently required before these fixes are used widely.

Nature, Published online: 24 March 2025; doi:10.1038/d41586-025-00919-1Geophysicist Shiba Subedi combines science and songwriting to raise awareness and debunk earthquake myths.

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Check out this surreal skeleton knight created using 3D Gaussian Splatting in Blender by @blue_nile_3d.See more stylized examples made with this technique: https://80.lv/articles/check-out-this-painterly-surreal-3dgs-based-skeleton-knight-in-blender/