SoylentNews

Freeman writes:

Your iPhone copy of Fortnite is about to become out of date [Updated]

Since Apple pulled Fortnite down from the iOS App Store earlier this month, some eBay users have apparently paid thousands of dollars for iPhones that had a playable, pre-installed copy of the game. Starting tomorrow, though, those devices will be no longer be able to play the latest version of the game.

[Update, 8/26 at 3:10p ET: iOS players who have previously downloaded the game will actually be able to continue playing the current Version 13.40 "Chapter 2 -Season 3" update on iOS, as well as subsequent versions on other platforms. Progression in the Season 3 Battle Pass will no longer be possible on any platform, however, and iOS players won't be able to crossplay with players on later versions on other platforms. Ars regrets the error.]

[...] Android users will still be able to install and play the latest update by downloading it directly from Epic or from The Samsung Galaxy Store on compatible devices.

Original Submission

Phoenix666 writes:

Student research team develops hybrid rocket engine:

In a year defined by obstacles, a University of Illinois at Urbana-Champaign student rocket team persevered. Working together across five time zones, they successfully designed a hybrid rocket engine that uses paraffin and a novel nitrous oxide-oxygen mixture called Nytrox. The team has its sights set on launching a rocket with the new engine at the 2021 Intercollegiate Rocketry and Engineering Competition.

[...] Last year the team witnessed a number of catastrophic failures with hybrid engines utilizing nitrous oxide. The propellant frequently overheated in the New Mexico desert, where the IREC competition is held. Lembeck said this motivated the team to find an alternative fuel that could remain stable at temperature. Nytrox surfaced as the solution to the problem.

[...] In June 2021, the rocket will be transported to Spaceport America in Truth or Consequences for its first launch.

The team collaborated online to build their rocket.

Vignesh Sella et al. Development of a Nytrox-Paraffin Hybrid Rocket Engine, AIAA Propulsion and Energy 2020 Forum (2020). DOI: 10.2514/6.2020-3729

Original Submission

upstart writes in with an IRC submission:

Military-spec filament produces stronger 3D-printed objects:

While consumer-grade 3D printers may be adequate for making things like models or curios, they're not always up to the task of creating objects that stand up to real-world use. That could be about to change, though, thanks to a new printing filament.

Compact, inexpensive 3D printers typically utilize a process known as fused filament fabrication (FFF). This involves heating a plastic filament to its melting point, then extruding it through a nozzle. Successive layers of the molten plastic are deposited one on top of the other, forming a single solid object as they cool and fuse together.

According to US Army engineers, though, items printed in this fashion tend to be too structurally weak for rough-and-tough use by soldiers in the field. This is a shame, since if troops were able to carry small, cheap 3D printers with them, they could make parts and tools onsite as needed. And although there are printers that use non-FFF techniques to produce stronger objects, those machines are large and costly, making them impractical for field use.

Led by Dr. Eric D. Wetzel, researchers from the Army's Emerging Composites team set out to address this problem. They ultimately created a new dual-polymer filament that allows consumer 3D printers to produce much stronger items, utilizing their existing FFF hardware.

Source: US Army Research Laboratory

Journal Reference:
Kevin R. Hart, Ryan M. Dunn, Eric D. Wetzel. Tough, Additively Manufactured Structures Fabricated with Dual‐Thermoplastic Filaments, Advanced Engineering Materials (DOI: 10.1002/adem.201901184)

Original Submission

upstart writes in with an IRC submission for nutherguy:

Solar Panels Are Starting to Die, Leaving Behind Toxic Trash:

Solar panels are an increasingly important source of renewable power that will play an essential role in fighting climate change. They are also complex pieces of technology that become big, bulky sheets of electronic waste at the end of their lives—and right now, most of the world doesn't have a plan for dealing with that.

But we'll need to develop one soon, because the solar e-waste glut is coming. By 2050, the International Renewable Energy Agency projects that up to 78 million metric tons of solar panels will have reached the end of their life, and that the world will be generating about 6 million metric tons of new solar e-waste annually. While the latter number is a small fraction of the total e-waste humanity produces each year, standard electronics recycling methods don't cut it for solar panels. Recovering the most valuable materials from one, including silver and silicon, requires bespoke recycling solutions. And if we fail to develop those solutions along with policies that support their widespread adoption, we already know what will happen.

"If we don't mandate recycling, many of the modules will go to landfill," said Arizona State University solar researcher Meng Tao, who recently authored a review paper on recycling silicon solar panels, which comprise 95 percent of the solar market.

upstart writes in with an IRC submission for RandomFactor:

Researchers develop flat lens a thousand times thinner than a human hair:

A lens that is a thousand times thinner than a human hair has been developed in Brazil by researchers at the University of São Paulo's São Carlos School of Engineering (EESC-USP). It can serve as a camera lens in smartphones or be used in other devices that depend on sensors.

[...] The lens consists of a single nanometric layer of silicon on arrays of nanoposts that interact with light. The structure is printed by photolithography, a well-known technique used to fabricate transistors.

This kind of lens is known as a metalens.

[...] "Our lens has an arbitrary field of view, which ideally can reach 180° without image distortion," Rezende Martins said. "We've tested its effectiveness for an angle of 110°. With wider angles of view, light energy decreases owing to the shadow effect, but this can be corrected by post-processing."

Previously metalenses have been limited in their field of view. This lens opens up a much wider range of possibilities.

Journal Reference:
Augusto Martins, et. al.,On Metalenses with Arbitrarily Wide Field of View, ACS Photonics (DOI: 10.1021/acsphotonics.0c00479)

Original Submission

upstart writes in with an IRC submission for RandomFactor:

Transparent near-infrared light-emitting diodes:

Near-infrared (NIR) covert illumination is increasingly important for facial recognition, motion sensing and depth sensing functions in mobile devices. However, these NIR illumination sources, which are usually non–transparent LED chips, occupy valuable space and could lead to unsightly black notches on an otherwise full-area color display.

[...] Their devices employ an ultra-thin layer of a novel perovskite-based semiconductor, which is capable of intense and efficient light emission. This perovskite semiconductor also benefits from low-cost processing and versatile integration into a variety of device substrates. By further replacing the traditional non-transparent metallic electrode with a new electrode comprising layers of ultra-thin metals and conductive oxide, the team is able to achieve an optimal balance of high optical transparency, low electrode resistance, and efficient charge injection that are required for the LED to generate light efficiently.

Mr Xie Chenchao, a Ph.D. student on the research team said, "We found that the implementation of a thin aluminum interlayer in our transparent electrode greatly reduced plasma damage to our device during the electrode deposition process, and allowed our devices to function efficiently."

Journal Reference:
Chenchao Xie, Xiaofei Zhao, Evon Woan Yuann Ong, et al. Transparent near-infrared perovskite light-emitting diodes [open], Nature Communications (DOI: 10.1038/s41467-020-18110-7)

Original Submission

Freeman writes:

https://arstechnica.com/features/2020/08/ars-readers-take-on-the-present-and-future-of-work/

Over the past few weeks, we've been talking about how best to manage the current state of work and what companies will need to do in the near and not-too-distant future to adjust to post-pandemic reality. As expected, our readers had some opinions on these topics, too—ranging from insightful to inciteful.

So, in the interest of better surfacing the wisdom of our particular crowd, I've curated some of the thoughts of the Ars community on the topics of working better from home and what our shared experiences have taught us about the future of collaboration technology and the future nature of the corporate office. As always, we hope you'll share additional wisdom in the comments here, as they may guide some future coverage on issues related to the realities of future work.
[...]
Aside from responding with protests of post-traumatic stress after I mentioned Lotus Notes in our article on the future of collaboration, our readers had some on-point thoughts on the current strengths and weaknesses of collaboration technology—particularly in the face of current circumstances. And one of the problems is collaborating across companies effectively.
[...]
Other readers noted that work-from-home wasn't an option for them, but only because of management's whims. RCook wrote that his employer had brought everyone back into the office, "partly because we're located in Iowa where the Pandemic didn't happen according to our Governor and partly because the company President has some stupid control issues."
[....]
However, the company president is working from home. And while RCook "made sure the IT infrastructure was ready and capable of handling the [work-from-home] VPN load" during the company's initial lockdown, "I was actually asked at one point how management could effectively spy on employees to gauge productivity."

Original Submission

upstart writes in with an IRC submission for nutherguy:

Trump Is Petrified That Pro-Weed Forces Will Roast Him:

The president and some of his team, already obsessed with the potential drop-off of various demographic groups that make up his battered coalition, have begun openly worrying that the drive to legalize or decriminalize marijuana might hurt him and fellow Republicans at the ballot box.

According to two GOP strategists who've independently discussed the topic with Trump this year, the president believes that inclusion of marijuana initiatives on state ballots could supercharge turnout for voters who lean toward Democratic candidates and causes. The president, according to one of the sources, asked for updates on critical swing-states that could see such ballot measures in the 2020 elections.

"The president is keenly aware of how presidential elections [nowadays]... can be won at the margins," one of the Republican strategists said. "The pot issue is one of many that he thinks could be a danger... He once told me it would be very 'smart' for the Democrat[ic] Party to get as many of these on the ballot as they could."

Decades ago, Trump had publicly advocated full-on legalization, arguing that "we're losing badly the war on drugs," and that "you have to legalize drugs to win that war. You have to take the profit away from these drug czars." During this iteration of his political identity, he put the blame on politicians who "don't have any guts" to tackle drug legalization.

But by his 2016 presidential campaign, Trump had come out "strongly" against legal weed. By the time he reached the Oval Office, he was enthusiastically proposing executing drug dealers by firing squad. And his first attorney general, Jeff Sessions, revoked an Obama-era guidance that discouraged the feds from prosecuting marijuana-based criminal cases in states where it was legal.

Original Submission

An Anonymous Coward writes:

Wireless device makes clean fuel from sunlight, CO2 and water:

The device, developed by a team from the University of Cambridge, is a significant step toward achieving artificial photosynthesis – a process mimicking the ability of plants to convert sunlight into energy. It is based on an advanced 'photosheet' technology and converts sunlight, carbon dioxide and water into oxygen and formic acid – a storable fuel that can be either be used directly or be converted into hydrogen.

The results, reported in the journal Nature Energy, represent a new method for the conversion of carbon dioxide into clean fuels. The wireless device could be scaled up and used on energy 'farms' similar to solar farms, producing clean fuel using sunlight and water.

[...] "It's been difficult to achieve artificial photosynthesis with a high degree of selectivity, so that you're converting as much of the sunlight as possible into the fuel you want, rather than be left with a lot of waste," said first author Dr Qian Wang from Cambridge's Department of Chemistry.

[...] this new technology is more robust and produces clean fuel that is easier to store and shows potential for producing fuel products at scale. The test unit is 20 square centimetres in size, but the researchers say that it should be relatively straightforward to scale it up to several square metres. In addition, the formic acid can be accumulated in solution, and be chemically converted into different types of fuel.

"We were surprised how well it worked in terms of its selectivity – it produced almost no by-products," said Wang. "Sometimes things don't work as well as you expected, but this was a rare case where it actually worked better."

Journal Reference:
Qian Wang, Julien Warnan, Santiago Rodríguez-Jiménez, et al. Molecularly engineered photocatalyst sheet for scalable solar formate production from carbon dioxide and water, Nature Energy (DOI: 10.1038/s41560-020-0678-6)

Original Submission

Arthur T Knackerbracket has found the following story:

Scientists on an experiment at the Large Hadron Collider see massive W particles emerging from collisions with electromagnetic fields. How can this happen?

The Large Hadron Collider plays with Albert Einstein's famous equation, E = mc², to transform matter into energy and then back into different forms of matter. But on rare occasions, it can skip the first step and collide pure energy—in the form of electromagnetic waves.

[...] This research doesn't just illustrate the central concept governing processes inside the LHC: that energy and matter are two sides of the same coin. It also confirms that at high enough energies, forces that seem separate in our everyday lives—electromagnetism and the weak force—are united.

[...] Inside CERN's accelerator complex, protons are accelerated close to the speed of light. Their normally rounded forms squish along the direction of motion as special relativity supersedes the classical laws of motion for processes taking place at the LHC. The two incoming protons see each other as compressed pancakes accompanied by an equally squeezed electromagnetic field (protons are charged, and all charged particles have an electromagnetic field). The energy of the LHC combined with the length contraction boosts the strength of the protons' electromagnetic fields by a factor of 7500.

When two protons graze each other, their squished electromagnetic fields intersect. These fields skip the classical "amplify" etiquette that applies at low energies and instead follow the rules outlined by quantum electrodynamics. Through these new laws, the two fields can merge and become the "E" in E=mc².

[...] The LHC is one of the few places on Earth that can produce and collide energetic photons, and it's the only place where scientists have seen two energetic photons merging and transforming into massive W bosons.

-- submitted from IRC

Original Submission

upstart writes in with an IRC submission for Soycow_Lover:

US Air Force just demoed its first flying car, and it's excessive:

It's no secret that the US Air Force wants flying cars. The branch of the US Military announced last year that it was starting to explore electric vertical take off and landing  (eVTOL) craft, and earlier this year, said it wants 30 vehicles in service by 2030.

After its first demonstration last week, the Air Force has just got a little closer to this goal.

[...] On Thursday last week, officials gathered in Austin, Texas to witness the first demonstration of a flying car, the 18 rotor Hexa made by Texas eVTOL startup, LIFT Aircraft.

[...] The picture below shows you pretty much everything else you need to know. The Hexa generates lift with a load of electric rotors, has space for one passenger, and it takes off from a standstill in a vertical direction.

One thing is for sure, these eVTOL craft look kinda dorky, or you might even say excessive. We'll have to come round to their aesthetic sooner or later because that excessiveness is kind of a safety requirement. LIFT says that the Hexa can land safely with up to six rotors disabled.

The demonstration was all part of what the Air Force calls its Agility Prime program, a collection of developers, communities, and events that aims to spearhead the development of personal eVTOL flying cars.

Original Submission

maxwell demon writes:

Mozilla seems to be hell-bent on alienating users, as they did it again:

An update to the Android flavor of Firefox left fuming punters thinking a bad experimental build had been pushed to their smartphones. In fact, this was a deliberate software release.

A Reg reader yesterday alerted us to an August 20 version bump that was causing so many problems, our tipster thought it was a beta that had gone seriously awry. "To sum it up, on 20th of August, Firefox 79 was unexpectedly forced on a large batch of Firefox 68 Android users without any warning, way to opt out or roll back," our reader reported. "A lot got broken in the process: the user interface, tabs, navigation, add-ons."

Meanwhile, the Google Play store page for the completely free and open-source Firefox has a rash of one-star reviews echoing similar complaints: after the upgrade, little seemed to work as expected.

Among the complaints are a missing back button, frequent browser crashes, and extensions not working.

Sounds like a buggy release for sure. But:

Unfortunately for our source, and the other Firefox for Android users, this isn't a mistaken release or a broken beta build: it's the new version of Firefox for Android, and it's set to hit the UK today, August 25, and the US on the 27th.

Original Submission

takyon writes:

Russia Releases "Tsar Bomba" Test Footage Of The Most Powerful Nuclear Bomb Blast Ever

The nuclear bomb, codenamed "Ivan," that was dropped by the Soviet Union over Novaya Zemlya in the Arctic Ocean on October 30, 1961, was the largest device of its kind ever detonated. The monstrous weapon had a yield of around 50 megatons — equivalent to 50 million tons of TNT. Until now, the available imagery of that test has been strictly limited, consisting of short, grainy clips and poor-quality stills.

The colossal Ivan device was developed under a program known as izdeliye 202 (meaning "product 202", otherwise known simply as "V"). Years later, when more details became known about it in the West, the weapon would be dubbed "Tsar Bomba."

On August 20, 2020, the Rosatom State Atomic Energy Corporation — the Russian state concern responsible for nuclear enterprises, including nuclear weapons — released a 30-minute documentary film on its official YouTube channel showing the test in unprecedented detail, from the initial transport of the device itself to the mushroom cloud that later rose some 6.2 miles over the Arctic archipelago. The release of the film coincides with the 75th anniversary of Russia's nuclear industry — although a thermonuclear bomb popularly described in the West as a "doomsday weapon" was perhaps an unusual choice for the commemoration. Regardless, it was a remarkable technological achievement.

Test of a clean hydrogen bomb with a yield of 50 megatons (40m28s video). Detonation footage starts after 22:40, with more footage after the end of the documentary starting at 29:32.

Wikipedia entry for Tsar Bomba.

Original Submission

Freeman writes:

https://arstechnica.com/gaming/2020/08/judge-issues-restraining-order-protecting-unreal-engine-development-on-ios/

A Northern California federal judge has issued a temporary restraining order blocking Apple from going forward with plans to terminate Epic Games' Apple Developer Program account, which would have had a major impact on the development of Unreal Engine on iOS. At the same time, the judge left in place Apple's current blocking of Fortnite from the iOS App Store after Epic tried to insert an alternative payment platform into the mobile game.

Previously:
Microsoft Issues Statement in Support of Epic Games to Remain on Apple Ecosystem
Epic-Apple Feud Could Also Affect Third-Party Unreal Engine Games
Fortnite Maker Sues Apple after Removal of Game From App Store
Fortnite's Android Version Bypasses Google Play to Avoid 30% "Store Tax"

Original Submission

upstart writes in with an IRC submission:

New Attack Lets Hackers Decrypt VoLTE Encryption to Spy on Phone Calls:

A team of academic researchers—who previously made the headlines earlier this year for uncovering severe security issues in the 4G LTE and 5G networks—today presented a new attack called 'ReVoLTE,' that could let remote attackers break the encryption used by VoLTE voice calls and spy on targeted phone calls.

The attack doesn't exploit any flaw in the Voice over LTE (VoLTE) protocol; instead, it leverages weak implementation of the LTE mobile network by most telecommunication providers in practice, allowing an attacker to eavesdrop on the encrypted phone calls made by targeted victims.

VoLTE or Voice over Long Term Evolution protocol is a standard high-speed wireless communication for mobile phones and data terminals, including Internet of things (IoT) devices and wearables, deploying 4G LTE radio access technology.

The crux of the problem is that most mobile operators often use the same keystream for two subsequent calls within one radio connection to encrypt the voice data between the phone and the same base station, i.e., mobile phone tower.

[...] To initiate this attack, the attacker must be connected to the same base station as the victim and place a downlink sniffer to monitor and record a 'targeted call' made by the victim to someone else that needs to be decrypted later, as part of the first phase of ReVoLTE attack.

Once the victim hangs up the 'targeted call,' the attacker is required to call the victim, usually within 10 seconds immediately, which would force the vulnerable network into initiating a new call between victim and attacker on the same radio connection as used by previous targeted call.

Also at: Threatpost.

Original Submission