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A Century of Quantum Mechanics

Lieber Pauli... Read the translation of the letter sent by Werner Heisenberg to Wolfgang Pauli on 9 July 1925. The original letter is preserved in CERN’s Wolfgang Pauli Archive. (Copyright: Heisenberg Society) Dear Pauli, If you believe that I read your letter laughing mockingly, then you are gravely mistaken; quite the contrary – since Helgoland, my views on mechanics have become more radical with each passing day, and it is my firm conviction that Bohr’s theory of the hydrogen atom, in its pre

Should Student Loans Borrowers in SAVE Switch to Another Repayment Plan? It's Complicated

Interest will restart for SAVE borrowers whose loans remain in a general forbearance on August 1. Viva Tung / CNET Starting Aug. 1, borrowers enrolled in the Saving on a Valuable Education plan will start accruing interest charges on their loan balances. The trouble is, their payments remain on hold in a general forbearance. Now they're being encouraged to choose a new payment plan or face interest charges. The Department of Education "urges all borrowers in the SAVE plan to quickly transition

This 19-year-old’s space company just raised millions to keep satellites connected 24/7

Apolink, a Y Combinator-backed space-tech startup founded by a 19-year-old Indian-origin entrepreneur, has raised $4.3 million in an “oversubscribed” seed round at a $45 million post-money valuation to build a real-time connectivity network for satellites in low Earth orbit (LEO). The startup is tackling a persistent problem in space communications. Satellites frequently go offline during parts of their orbit due to dead zones — periods when they are not in the line of sight of a ground station

YC-backed Apolink by 19-year-old bags $4.3M to build 24/7 connectivity for LEO satellites

Apolink, a Y Combinator-backed space-tech startup founded by a 19-year-old Indian-origin entrepreneur, has raised $4.3 million in an “oversubscribed” seed round at a $45 million post-money valuation to build a real-time connectivity network for satellites in low Earth orbit (LEO). The startup is tackling a persistent problem in space communications. Satellites frequently go offline during parts of their orbit due to dead zones — periods when they are not in the line of sight of a ground station

It’s hunting season in orbit as Russia’s killer satellites mystify skywatchers

Russia is a waning space power, but President Vladimir Putin has made sure he still has a saber to rattle in orbit. This has become more evident in recent weeks, when we saw a pair of rocket launches carrying top-secret military payloads, the release of a mysterious object from a Russian mothership in orbit, and a sequence of complex formation-flying maneuvers with a trio of satellites nearly 400 miles up. In isolation, each of these things would catch the attention of Western analysts. Taken

RealSense spins out of Intel to scale its stereoscopic imaging technology

After 14 years of developing inside of semiconductor giant Intel, RealSense is striking out on its own. RealSense sells cameras that use stereoscopic imaging, a process that combines two images of the same object from different angles to create depth, enhanced with infrared light. This technology helps machines like robots, drones, and autonomous vehicles have a better perception of the physical world around them. The tech is also used for facial authentication. “The common denominator of all

Lowest price alert: Ring Doorbell Plus crashes to $79.99 today

Roger Fingas / Android Authority If you’re in the market for a smart home upgrade out front of your property, this offer might be worth checking out. There’s a significant deal on the Ring Doorbell Plus that could save you some serious cash. During this Prime Day, the device is available for $79.99, a substantial markdown from its usual price of $149.99. Not only is it the lowest price we’ve ever tracked, it beats the previous all-time low by some distance. Ring Doorbell Plus for $79.99 (47% of

Student Loan Update: Here's What SAVE Borrowers Should Do by August 1

Interest will restart for SAVE borrowers whose loans remain in a general forbearance on August 1. Viva Tung / CNET Federal student loans for those who are enrolled in the Saving on a Valuable Education plan have been in an interest-free forbearance for a year while the income-driven repayment plan was challenged in court. Although SAVE has been officially blocked in the courts, borrowers' loans are still in limbo. Now, borrowers are being encouraged to choose a new payment plan or face interest

This video doorbell camera successfully replaced my Ring with no subscription (and it's on sale)

ZDNET's key takeaways The Eufy Security Video Doorbell E340 is normally available for $150 but is currently on sale. This doorbell features two cameras to give you complete visibility of the person at your door and any packages left on your porch, all with no monthly fees. Although the doorbell comes with 8GB of built-in local storage (enough for up to 60 days of event recordings), you need to add a Eufy Security HomeBase to get the most out of it. View now at Amazon View now at Eufy more buyi

Netgear’s Excellent Wi-Fi 7 Mesh Is on Sale for Prime Day

The Prime Day deals keep raining down, but a discount on Netgear’s Orbi 770 Series stands out in the deluge, especially considering that it's WIRED's favorite Wi-Fi 7 mesh system for most people. Easy to set up and use, and boasting stable and speedy performance, not to mention expansive coverage, the Orbi 770 Series is a banging mesh. On the prowl for more tasty discounts? You owe it to yourself to check out our roundup of the Absolute Best Prime Day Deals, covering all categories (including m

Topics: fi mesh netgear orbi wi

Aqara’s G410 Doorbell Camera Hub launches with HomeKit Secure Video, Matter, and RTSP support

Aqara has announced the release of its new Doorbell Camera hub, the Aqara G410 (use code AQARAUS7 to save 15% through 7/13). This smart video doorbell also functions as a Matter smart home hub. For those of us in the Apple ecosystem, the standout feature is full support for HomeKit Secure Video and Matter, making it one of the few battery-powered doorbells on the market to support Apple’s smart home video storage feature. Some of my favorite gear Aqara Smart Lock U50 Upgrade your doors with App

Netgear's Excellent Wi-Fi 7 Mesh Is on Sale for Prime Day

The Prime Day deals keep raining down, but a discount on Netgear’s Orbi 770 Series stands out in the deluge, especially considering it's WIRED's favorite Wi-Fi 7 mesh system for most people. Easy to set up and use, boasting stable and speedy performance, not to mention expansive coverage, the Orbi 770 Series is a banging mesh. On the prowl for more tasty discounts? You owe it to yourself to check out our roundup of the Absolute Best Prime Day Deals, covering all categories (including more route

Topics: fi mesh netgear orbi wi

This video doorbell camera successfully replaced my Ring with no subscription - and it's on sale

ZDNET's key takeaways The Eufy Security Video Doorbell E340 is normally available for $180 but is currently on sale. This doorbell features two cameras to give you complete visibility of the person at your door and any packages left on your porch, all with no monthly fees. Although the doorbell comes with 8GB of built-in local storage (enough for up to 60 days of event recordings), you need to add a Eufy Security HomeBase to get the most out of it. View now at Amazon View now at Eufy more buyi

The best doorbell cameras

Editor’s note: Amazon Prime Day 2025 is officially underway. If you’re looking to make the most of the four-day shopping extravaganza, we’ve put together a guide to the best Prime Day deals you can get. With a smart video doorbell, your front door’s communication skills go from 1980s landline to a modern smartphone. Combining a motion-activated camera with a microphone, speaker, and buzzer, a doorbell camera sends alerts to your phone, allowing you to see who’s at the door without needing to op

The Blink Video Doorbell Is Practically Free, Amazon Seems Determined to Clear Out All Their Stock

Among all the Amazon devices going on sale during Prime Day, the Blink video doorbell wins the award for largest discount. This newly updated version of Blink’s smart doorbell now sells for just $29, while its normal price is $69 (that’s a massive 57% discount). See at Amazon Amazon seems intent on clearing out as much stock as possible even though the device itself is compact and easy to store. If you’re a Prime member—even if you’re just using the free trial—you can take advantage of this in

Orb Is the Internet Speed Test Your Wi-Fi Has Been Waiting For

Internet speed tests aren't just for people who obsess over their internet connection. When my friends or parents are experiencing an inevitable home internet slowdown, my first recommendation is always to start with a speed test. In fact, I’ve tested and used dozens of internet speed tests -- the market is pretty saturated with them. Ideally, the best internet speed test is one that diagnoses your bandwidth blues as simply as possible -- no ads, no extra features you can’t make sense of, and no

This subscription-less video doorbell easily replaced my Ring - and it's $50 off right now

ZDNET's key takeaways The Lorex 2K Wi-Fi video doorbell is available for $150. The doorbell comes in wired and wireless installations, communicates reliably, and includes a preinstalled 32GB microSD card for local storage so you can bypass subscription fees. Although it has a 2K resolution, the image is so wide angle that objects look distorted. $149.99 at Amazon For a limited time, Lorex has the 2K Wi-Fi Battery Video Doorbell discounted by $50 on Amazon, making it more affordable than ever.

If You’re a Prime Member, Amazon Is Giving Up All Its Margin on the Ring Video Doorbell

Ring is Amazon’s in-home smart home security brand and every Prime Day features some of the year’s best prices on their devices. Ring battery doorbell, specifically the new model with head-to-toe video, is the top of its kind for value and performance. With 4.6 out of 5 based on over 17,000 reviews, this doorbell is very popular. Now, it’s available as a Prime-exclusive offer for an all-time-low price of $49, down from $99. Only Prime members can get the offer, but if you’re not currently a mem

If You’re a Prime Member, This Blink Wire-Free Video Doorbell Is Almost Free on Amazon

The new Blink video doorbell is finally getting its first deep discount and it’s coming as one of Amazon’s early Prime Day deals. This wireless model has yet to be discounted at all so this is a unique opportunity to beef up the security on your home at a fraction of its usual cost. Currently, Prime members can get the newest Blink video doorbell for as little as $34, a decrease from its original price of $69. That’s 50% off which is the lowest the price has ever been on this device. If you’re

Vortex (Véhicule Orbital Réutilisable de Transport Et D'Exploration)

As an architect and integrator of complex airborne systems, Dassault Aviation intends to take advantage of its space expertise to develop spaceplane solutions that disrupt current systems. VORTEX (Véhicule Orbital Réutilisable de Transport et d’Exploration) Designed to operate in space and return to Earth like an aircraft, these intrinsically dual-use vehicles have the potential to transform space operations—enabling new applications across commercial, scientific, and military missions. Space

Rocket Report: Japan’s workhorse booster takes a bow; you can invest in SpaceX now

Welcome to Edition 8.01 of the Rocket Report! Today's edition will be a little shorter than normal because, for one day only, we celebrate fake rockets—fireworks—rather than the real thing. For our American readers, we hope you have a splendid Fourth of July holiday weekend. For our non-American readers, you may be wondering what the heck is happening in our country right now. Alas, making sense of <waves hands> all this is beyond the scope of this humble little newsletter. As always, we welcom

The EU Proposes New Rules to Govern the European Space Race

There are around 11,000 satellites orbiting Earth, and it is estimated that at least 50,000 more will be launched in the next decade. There are also exploration instruments, resupply vessels, and complexes like the International Space Station. But who regulates all this activity in space? In the absence of clear regulations, the European Union has proposed the Space Act, a set of measures that seeks to make the European space sector a cleaner, safer, and more competitive environment, both domest

Astronomers may have found a third interstellar object

There is a growing buzz in the astronomy community about a new object with a hyperbolic trajectory that is moving toward the inner Solar System. Early on Wednesday, the European Space Agency confirmed that the object, tentatively known as A11pl3Z, did indeed have interstellar origins. "Astronomers may have just discovered the third interstellar object passing through the Solar System!" the agency's Operations account shared on Blue Sky. "ESA’s Planetary Defenders are observing the object, prov

Pentagon may put SpaceX at the center of a sensor-to-shooter targeting network

The Trump administration plans to cancel a fleet of orbiting data relay satellites managed by the Space Development Agency and replace it with a secretive network that, so far, relies primarily on SpaceX's Starlink Internet constellation, according to budget documents. The move prompted questions from lawmakers during a Senate hearing on the Space Force's budget last week. While details of the Pentagon's plan remain secret, the White House proposal would commit $277 million in funding to kick o

How a beer-making process is used to make cleaner disposable diapers

Disposable diapers are a massive environmental offender. Roughly 300,000 of them are sent to landfills or incinerated every minute, according to the World Economic Forum, and they take hundreds of years to decompose. It's a $60 billion business. One alternative approach has been compostable diapers, which can be made out of wood pulp or bamboo. But composting services aren't universally available and some of the products are less absorbent than normal nappies, critics say. A growing number of

Linux's remarkable journey from one dev's hobby to 40 million lines of code - and counting

Martin Harvey/Getty Images When Linus Torvalds posted his now-legendary 1991 announcement about a "hobby" operating system kernel, no one would have predicted that Linux would become the backbone of modern computing. In a speech at the Open-Source Summit, North America, Jonathan Corbet, executive editor of LWN and longtime kernel developer, recounted the Linux kernel's remarkable journey, highlighting its disruptive beginnings, its unique development model, and the challenges that have shaped i

The secret to Linux's remarkable journey from one dev's hobby to 40 million lines of code

Vicki Jauron, Babylon and Beyond Photography/Getty Images When Linus Torvalds posted his now-legendary 1991 announcement about a "hobby" operating system kernel, no one would have predicted that Linux would become the backbone of modern computing. In a speech at the Open-Source Summit, North America, Jonathan Corbet, executive editor of LWN and longtime kernel developer, recounted the Linux kernel's remarkable journey, highlighting its disruptive beginnings, its unique development model, and th

Finally, a video security doorbell that has similar features as Ring but no monthly fees

ZDNET's key takeaways The Lorex 2K Wi-Fi video doorbell is available for $200. The doorbell comes in wired and wireless installations, communicates reliably, and includes a preinstalled 32GB microSD card for local storage so you can bypass subscription fees. Although it has a 2K resolution, the image is so wide angle that objects look distorted. $149.99 at Amazon Video doorbells are among the best ways to start your smart home journey. They are easy to use and often easy to install, and provi

The Ring Doorbell Is 50% Off, Plus You Get a FREE Ring Indoor Cam for Early Prime Day

Amazon’s Prime Day deals have arrived early, and this year the bargains aren’t just for Prime members: anyone can reap deep discounts on Amazon devices including the top-selling Ring family. The ring battery doorbell is a current top seller in its category and is on sale for $99. It’s a great value on its own, but Amazon went one better and put together a bundle that’s nearly irresistible: You can get both the ring battery doorbell and the ring indoor cam 2nd gen right now for just $69. That’s c

Failed Orbital Mission Loses Human Remains, Space Pot

A spacecraft carrying the remains of more than 160 people crashed into the Pacific Ocean on Tuesday, June 24, causing its contents to be lost at sea. The mission intended to return the remains to the families that provided them following a brief stint in space, but now, they will never be seen again. On Monday, June 23, a SpaceX Falcon 9 rocket launched the Transporter-14 rideshare mission from California’s Vandenberg Space Force Base, carrying 70 payloads to low-Earth orbit. The largest was Ny