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Physically based rendering from first principles

Physically based rendering from first principles In this interactive article, we will explore the physical phenomena that create light and the fundamental laws governing its interaction with matter. We will learn how our human eyes capture light and how our brains interpret it as visual information. We will then model approximations of these physical interactions and learn how to create physically realistic renderings of various materials. Chapter 1: What is light? We are all familiar with li

Robotic bug literally walks on water

Robots can serve pizza, crawl over alien planets, swim like octopuses and jellyfish, cosplay as humans, and even perform surgery. But can they walk on water? Rhagobot isn’t exactly the first thing that comes to mind at the mention of a robot. Inspired by Rhagovelia water striders, semiaquatic insects also known as ripple bugs, these tiny bots can glide across rushing streams because of the robotization of an evolutionary adaptation. Rhagovelia (as opposed to other species of water striders) ha

5 ways to instantly boost your soundbar audio quality (without spending a dime)

Jada Jones/ZDNET Follow ZDNET: Add us as a preferred source on Google. Soundbars are gaining in popularity because of their sleek design and ability to provide an ample boost in audio quality compared to built-in TV speakers. Even with their plug-and-play nature, you can make a few modifications to help unleash the best possible sound quality. Also: I tried Bose QuietComfort Ultra Earbuds' AI noise cancelling, and can't go back to regular ANC Whether you're new to soundbar setups or a self-p

Samsung's Trifold Phone and AI Glasses Reportedly Set for Sept. 29 Launch

Is three better than two? Apparently, we're about to find out again. Samsung will reportedly launch its Galaxy Z TriFold in South Korea on Sept. 29 in its third Unpacked event of 2025. At the same time, the company will introduce its Project Moohan mixed reality headset and AI smart glasses. If Samsung does indeed unleash the Galaxy Z TriFold later this month, it would be the second triple-screen phone in existence. Huawei last year rolled out its Mate XT in China, and we kinda sorta liked it.

Lost RCS support in Google Messages since last month? You’re not alone

Adamya Sharma / Android Authority TL;DR RCS in Google Messages has been down in several regions since early August. Reports from Reddit and Google forums mention outages in Kenya, Bangladesh, Pakistan, and other countries. Google says carriers must act to restore RCS, fueling speculation it pulled back its Jibe support. Rich Communication Services (RCS) is supposed to be the future of texting on Android, and even Apple has agreed to support the modern replacement for SMS. However, while RCS

Nvidia's Blackwell GPUs move robotics into the physical AI era

Editor's take: As exciting as generative AI may be, there is another AI-powered technology on the near-term horizon that could prove even more impactful: robotics, or as Nvidia's Jensen Huang and others have begun calling it, physical AI. The concept of physical AI is that many of the same algorithmic principles used to create large language models for text-based interactions can be applied to learning and replicating physical movements in the real world. Nvidia has offered robotics-focused har

Marshall adds a subwoofer and compact soundbar to its Heston TV audio lineup

Marshall's family of TV audio gear is growing. The company has announced the Heston Sub 200 subwoofer and Heston 60 compact soundbar, both of which are now available for pre-order. The $700 Heston 60 is a smaller take on the first soundbar Marshall introduced earlier this year, the Heston 120, offering Dolby Atmos and DTS-X for more intimate spaces. With the Heston Sub 200, a $600 subwoofer that pairs with both soundbars, Marshall touts "a sound that can be truly felt." Both products come in Cre

RubyMine is now free for non-commercial use

Iryna Pisklyarova Read this post in other languages: 日本語 Hold on to your helper methods – RubyMine is now FREE for non-commercial use! Whether you’re learning Ruby and Rails, pushing open-source forward, creating dev content, or building your passion project, we want to make sure you have the tools to enjoy what you do even more… for free. Another chapter in the story We recently introduced a new licensing model for WebStorm, RustRover, Rider, and CLion – making them free for non-commercial u

Drew Barrymore Wants To Remake Cult Horror Comedy ‘Death Becomes Her’ With Adam Sandler, Jennifer Aniston

Hollywood remakes—be they sequels or reboots—are so extremely in vogue that they verge on being among the only movies that seem to get made these days. So it makes sense that Drew Barrymore is soft-pitching a remake of the 1992 cult classic dark horror comedy film, Death Becomes Her. Speaking on her eponymous talk show, Barrymore said she wants to work with friends Jennifer Aniston and Adam Sandler to revive a bunch of older films. And chief among them is Back to the Future director Robert Zeme

Best Expert-Approved Glucose Monitors for 2025

Editor's note, June 25, 2024: Since this article was first published, Dexcom has launched the G7. This sensor is smaller than the G6 and has an improved alert system, along with a few other differences. "I find continuous glucose monitoring to be a valuable tool in the management of both type 1 and 2 diabetes," said Dr. Josh Emdur, medical director of SteadyMD. "CGM data provides actionable insight to help patients track their glycemic response to dietary choices and activity levels." The Dexc

Topics: blood dexcom dr g6 sugar

RubyMine Is Now Free for Non-Commercial Use

Iryna Pisklyarova Read this post in other languages: 日本語 Hold on to your helper methods – RubyMine is now FREE for non-commercial use! Whether you’re learning Ruby and Rails, pushing open-source forward, creating dev content, or building your passion project, we want to make sure you have the tools to enjoy what you do even more… for free. Another chapter in the story We recently introduced a new licensing model for WebStorm, RustRover, Rider, and CLion – making them free for non-commercial u

Expert-Approved Glucose Monitors of 2025

Editor's note, June 25, 2024: Since this article was first published, Dexcom has launched the G7. This sensor is smaller than the G6 and has an improved alert system, along with a few other differences. "I find continuous glucose monitoring to be a valuable tool in the management of both type 1 and 2 diabetes," said Dr. Josh Emdur, medical director of SteadyMD. "CGM data provides actionable insight to help patients track their glycemic response to dietary choices and activity levels." The Dexc

Topics: blood dexcom dr g6 sugar

Porsche’s next Cayenne is fully electric—we drove the prototype

Porsche provided flights from Albany to Barcelona and accommodation so Ars could drive a prototype Cayenne Electric. Ars does not accept paid editorial content. Curved displays in cars are increasingly common, adding a bit of shape to the increasing pixel overload we face behind the steering wheel. The designers of Porsche's upcoming Cayenne Electric, though, decided to do something more dramatic with the touchscreen that commands the center of the forthcoming SUV's dashboard. Its shape flows

Samsung Galaxy Z TriFold gets a rumored launch date, and it’s sooner than you think

AssembleDebug / Android Authority TL;DR A new leak suggests Samsung’s dual-hinged Galaxy Z TriFold will launch on September 29 in South Korea. The same event will reportedly feature launches of the Project Moohan (possibly rebranded to “Galaxy XR”) headset and potentially tease new AI-powered smart glasses. Previous leaks have suggested that the Galaxy tri-fold could be priced upwards of 4 million KRW (~$2,930) and be limited to China and South Korea. Samsung has long been working on a gener

One UI 8 on Galaxy S23 feels incomplete without this highlight feature

Lanh Nguyen / Android Authority TL;DR Samsung started the One UI 8 beta for the Galaxy S23 yesterday. Despite receiving the latest update, the Galaxy S23 is not getting a notable Galaxy AI feature, which is Now Brief. Samsung first introduced Now Brief with One UI 7 on the Galaxy S25, though it subsequently rolled out to other devices with One UI 8 (stable and beta). After first announcing One UI 8 with the Galaxy Z Fold 7 and Flip 7 back in July, Samsung is expected to bring it to other fla

Galaxy Z Fold 5, Flip 5 owners are get their first taste of One UI 8

Ryan Haines / Android Authority TL;DR The One UI 8 beta has started rolling out to the Galaxy Z Fold 5 and Galaxy Z Flip 5 foldable phones. This beta release seems to be restricted to Korea for now. This comes after Samsung recently brought the One UI 8 beta to the Galaxy S23 series and some Galaxy A phones. Samsung has just brought the One UI 8 beta to the Galaxy S23 series and a few other phones. However, there’s good news if you’ve got a Galaxy Z Fold 5 or Galaxy Z Flip 5 and were waiting

All new Samsung foldables are on sale; save up to $300!

Hadlee Simons / Android Authority These offers are available directly from Amazon. It is the first time all three models are discounted simultaneously. Previous deals included free gift cards, but today’s offers are actual discounts. The deals available apply to all color versions in stock, so you get to take your pick regardless of which phone you get. Samsung Galaxy Z Fold 7 Samsung Galaxy Z Fold 7 Samsung Galaxy Z Fold 7 Thin, light, high-powered, and it folds! The Samsung Galaxy Z Fold 7

Samsung 'Galaxy Glasses' powered by Android XR are reportedly on track to be unveiled this month

GM of Android XR, Shahram Izadi, on stage at Google I/O 2025. Google I/O (screenshot by Jason Hiner) Follow ZDNET: Add us as a preferred source on Google. ZDNET's key takeaways Samsung's AI glasses running Android XR would compete with the Meta Ray-Bans. The smart glasses will reportedly be announced at an Unpacked event on September 29. The product will be powered by Google Gemini and have features not included in Meta Ray-Bans. Samsung's AI smart glasses to compete with Meta Ray-Bans wil

My favorite projector from Samsung doubles as a gaming hub, and it's discounted for Labor Day

Allison Murray/ZDNET The Samsung Freestyle 2 projector is on sale for $341 off when you purchase it at Walmart, making the new price $459 over Labor Day weekend. Also: The best Labor Day deals live now ZDNET's key takeaways The Samsung Freestyle 2 is a solid projector available for $800. Sharp image quality, an internal battery, and the ability to play games without a console make this projector ultraportable. The second-generation feature upgrades are geared toward gaming, which may not b

The future of 32-bit support in the kernel

The future of 32-bit support in the kernel [LWN subscriber-only content] Welcome to LWN.net The following subscription-only content has been made available to you by an LWN subscriber. Thousands of subscribers depend on LWN for the best news from the Linux and free software communities. If you enjoy this article, please consider subscribing to LWN. Thank you for visiting LWN.net! Arnd Bergmann started his Open Source Summit Europe 2025 talk with a clear statement of position: 32-bit systems ar

Effective learning: Rules of formulating knowledge (1999)

Dr Piotr Wozniak, February, 1999 (updated) This article will help you overcome one of the greatest difficulties you will face when trying to accelerate learning: formulating knowledge The speed of learning will depend on the way you formulate the material. The same material can be learned many times faster if well formulated! The difference in speed can be stunning! The rules are listed in the order of importance. Those listed first are most often violated or bring most benefit if complied wi

Effective learning: Twenty rules of formulating knowledge (1999)

Dr Piotr Wozniak, February, 1999 (updated) This article will help you overcome one of the greatest difficulties you will face when trying to accelerate learning: formulating knowledge The speed of learning will depend on the way you formulate the material. The same material can be learned many times faster if well formulated! The difference in speed can be stunning! The rules are listed in the order of importance. Those listed first are most often violated or bring most benefit if complied wi

UK's largest battery storage facility at Tilbury substation

The 300MW Thurrock Storage project, developed by Statera Energy, is now energised and delivering electricity flexibly to the network across London and the south east. With a total capacity of 600MWh, Thurrock Storage is capable of powering up to 680,000 homes, and can help to balance supply and demand by soaking up surplus clean electricity and discharging it instantaneously when the grid needs it. Our Tilbury substation once served a coal plant, and with battery connections like this, it’s to

Magnesium Supplements Crash Course: Benefits and Side Effects

Suddenly, everyone is obsessed with magnesium supplements. It’s the key ingredient in #sleepygirlmocktails, powders stirred into tart cherry juice and prebiotic soda, a wellness cocktail for anxious millennials. Your coworkers are popping magnesium glycinate before bed instead of melatonin, because it allegedly cures insomnia, constipation, and existential dread. Folks seem especially concerned with optimizing their poop and pillow time. In the past year, Google searches for “which magnesium is

One UI 8 beta arrives on Galaxy S23 and Samsung’s popular A-series phones

Robert Triggs / Android Authority TL;DR Samsung is expanding the One UI 8 beta program to more devices. In addition to the previously supported models, the update is now available for the Galaxy S23, A55, A54, A36, and A35. Meanwhile, the Galaxy A56, Z Fold 5, and Flip 5 are expected to receive updates this month. After a laggy rollout of its Android 15-based One UI 7, Samsung sprinted to release One UI 8, based on Android 16, in less than six months. The Galaxy Z Fold 7 and the Flip 7 have

First Z Fold 6, now Galaxy Z Fold 7 owners complain of paint peeling

Ryan Haines / Android Authority TL;DR Some Samsung Galaxy Z Fold 7 owners have reported chipped paint on their phones. Many owners claimed that they haven’t dropped their devices. It’s possible that chargers are affecting the anodized body of the Z Fold 7, much like the Z Fold 6. The Samsung Galaxy Z Fold 7 has been on the market for just over a month now, and we praised the foldable phone in our review. However, some owners are discovering a rather weird hardware issue that we previously sa

Poll: Were you affected by Verizon’s service outage over the weekend?

Edgar Cervantes / Android Authority Verizon had a very eventful August, thanks mainly to the unpopular decision to cut loyalty discounts. The company had to resort to damage control by offering new discounts instead of the old ones, but some customers felt tricked into accepting lower discounts. If you were willing to look past all of this, the carrier just bounced back after a rough weekend where it suffered a service outage. Don’t want to miss the best from Android Authority? Set us as a pre

Android 16 has an annoying notification bug, but a fix is coming

Google released the stable version of Android 16 back in June, and it brings some welcome features to the platform. Unfortunately, the update has also introduced a peculiar bug for some. A user posted a report on Google’s Issue Tracker back in June, detailing a strange notification issue in Android 16. More specifically, the user and several others found that notifications don’t play any sounds when there’s already a notification in the notification shade. “When testing notifications, we reali

Ports, price, performance, or support: What trumps all on a Google TV streaming box?

Joe Maring / Android Authority 🗣️ This is an open thread. We want to hear from you! Share your thoughts in the comments and vote in the poll below — your take might be featured in a future roundup. Purchasing a TV streaming box is more daunting than choosing a new smartphone. With modern handsets, buying one that simply sucks is a rarity. You’ll have to juggle various pros and cons, but it’s been long since I’ve used an outright horrible phone. This isn’t true for TV boxes. Some obfuscate thei

Samsung will give you a free 65-inch TV right now - here's how to qualify for the deal

Samsung's Neo QLED QN90F 100-inch TV is impressive to see in person. Kerry Wan/ZDNET Cinema-sized TVs have gained a small but dedicated following since brands like Samsung and Hisense unveiled their super-sized models earlier this year. And if you've been on the fence about buying one for your own home theater, Samsung is offering a free 65-inch Crystal UHD U8000F TV when you purchase either a 98-inch QN90F or 100-inch QN80F directly from their website. The Samsung QN90F is the latest update t