SpaceX has filed an application with the Federal Communications Commission to launch up to 100,000 third‑generation Starlink satellites, expanding the constellation to roughly 111,000 satellites. The Gen3 satellites, each weighing more than 2,000 kg, would require Starship or Falcon Heavy launch vehicles. The filing requests spectrum across Ku, Ka, V, E, W and D bands and seeks waivers of FCC rules to create larger contiguous channels for high‑capacity fronthaul and backhaul. SpaceX says the network will deliver multi‑gigabit symmetrical broadband with ultra‑low latency below 20 ms, a ten‑fold increase over current 30‑50 ms latency. The plan targets consumers, enterprises, government users and AI‑driven devices worldwide. Upgraded user terminals and antennas are expected to be available shortly. Rivals include Amazon Project Leo, Eutelsat‑OneWeb, Telesat Lightspeed, Blue Origin’s TeraWave and legacy GEO providers HughesNet and Viasat. The FCC will review the application through its Space Bureau, with a public comment period for stakeholders; approval is pending and may include conditions on debris mitigation, spectrum coordination and interference protections. An astronomy group has warned that the dense constellation could have adverse effects on astronomical observations.

Oratomic, a startup founded by Caltech physicists, announced on July 10, 2026 that it has raised $300 million in a Series A round to develop a fault‑tolerant quantum computer that requires approximately 20,000 qubits, with the goal of delivering a utility‑scale system by the end of the decade, according to the company. The company’s architecture uses lasers to trap individual atoms as optical tweezers, a technique it says can correct errors using fewer qubits than earlier approaches, thereby addressing the noise problem that has limited previous quantum devices, as reported by the company. The funding round was led by ARCH Venture Partners, Spark Capital and Khosla Ventures, with participation from Bezos Expeditions, Index Ventures, General Catalyst, Lowercarbon Capital, Bain Capital and other investors, according to a press release. Oratomic said it will not pursue sales of noisy intermediate‑scale quantum (NISQ) prototypes, distinguishing its focus from firms such as PsiQuantum, which is valued at $7 billion and plans a million‑qubit system by 2027, the company added. CEO Dolev Bluvstein said the approach is simpler and less expensive, noting that experiments have demonstrated all core components at a smaller scale, the company reported. He also noted that the required qubit count of 10,000 to 20,000 is lower than the thousands of physical qubits typically cited for fault tolerance, and that the company has already validated the essential hardware elements. A fully functional quantum computer could enable breakthroughs in fields such as biotechnology, chemistry, logistics, artificial intelligence and cryptography, according to the company. The quantum computing sector has seen heightened investor activity, with startups Infleqtion and Quantinuum going public this year and publicly traded companies Rigetti and IonQ experiencing share‑price gains over the past 18 months, the company said. Investor Vinod Khosla wrote on X that the investment represents his firm’s largest initial commitment yet, the company added. The financing highlights growing confidence in scalable quantum computing, although commercial deployment is expected to require several more years, the company noted.

The European Commission has accused Meta of not addressing mental health risks linked to its platform design. In a charge sheet released on Friday, the commission said that features such as video autoplay and infinite scroll keep users engaged for longer periods. The commission argued that these tools shift users' attention into an automatic mode, which it says can lead to unhealthy habits and compulsive use. The agency noted that it is reviewing Meta's response and indicated that further regulatory measures could be taken if the design continues to pose risks. The commission has not specified a timeline for required changes, but it has signaled intent to enforce compliance.

OpenAI issued a statement denying Apple’s allegations of trade secret theft in a lawsuit filed July 10, 2026.

Apple’s complaint, filed in a California court, names former employees Chang Liu and Tang Tan as well as OpenAI and its io Products division. The filing alleges that the defendants misappropriated Apple’s confidential hardware information to advance OpenAI’s consumer hardware initiatives. According to the complaint, the individuals accessed Apple’s systems without authorization, disclosed unreleased product details to job candidates, and used proprietary manufacturing information to approach Apple suppliers.

The lawsuit builds on an earlier dispute in which hardware startup iyO sued OpenAI and io Products over branding and, in a March 2026 amendment, added claims of trade‑secret misappropriation involving Tang Tan, a former iyO engineer alleged to have transferred confidential files to a former Apple executive. OpenAI has contested those allegations.

OpenAI’s director of strategic communications, Drew Pusateri, posted on X that the company “has no interest in other companies’ trade secrets” and “remains focused on building innovative technology that empowers people everywhere.”

Microsoft's emissions rose 25% year‑over‑year, reaching 20 million tons of CO₂ equivalent in 2025, as AI‑driven datacenter construction expanded its infrastructure. The company said it matched its entire electricity consumption with renewable energy for the year, but the increase in greenhouse gas emissions was driven primarily by new datacenter facilities.

The 2026 Environmental Sustainability Report, released by Microsoft, notes that rapid AI adoption is reshaping technology and that the firm views these dynamics as a mandate to lead differently. In 2020 the company set a goal to become carbon‑negative by 2030; emissions were 13 million tons in 2020 and rose to 20 million tons in 2025, with the report estimating that without its existing reduction measures emissions would be 34 million tons.

Scope 3 emissions remain the largest component of Microsoft’s carbon footprint, while Scope 2 emissions, from purchased energy, contributed 13 percent of total emissions in 2025, up from 2 percent in 2024. The report also highlights water use, stating that facilities achieved a 25 percent reduction in water usage effectiveness since 2022. Global water withdrawal in 2025 totaled 13,266 million liters and consumption was 8,170 million liters; for the first time the company returned more water than it withdrew, with 14,278 million liters replenished.

Microsoft’s Circular Centers program reused 92 percent of decommissioned servers and components, and the firm experimented with low‑carbon concrete mixes and wood‑based construction, which it says have a carbon footprint about 65 percent lower than traditional methods. The company has not responded to inquiries about how the emissions increase will affect its 2030 carbon‑negative target.

New York City announced on July 10 a rule that will ban companies from using deceptive subscription practices that trap consumers in recurring charges. The rule, effective October 1, will permit the city to assess fines of $525 per user subscription, plus back fees, for violations that do not provide a simple cancellation method. The consumer protection office also proposed a rule that would require sellers to advertise the total price of any good or service, including all mandatory fees, before a transaction is completed. If adopted, the rent‑related provision would require all mandatory charges to be included in the advertised monthly rental price. The measures target hidden costs that affect about 70% of renters in New York City. Samuel AA Levine, commissioner of consumer and worker protection, said consumers should not have to spend long periods on hold or send certified letters to cancel subscriptions. The announcement was made at a press conference on Friday. The subscription rule could save New Yorkers up to $162.5 million per year, according to the Roosevelt Institute. A national click‑to‑cancel rule introduced by the Biden administration was struck down by a federal judge in 2025. The proposals follow an effort by former FTC director Zohran Mamdani and Levine to curb what they view as harmful corporate pricing practices that have persisted since the Reagan era. Industry groups have opposed similar rules, arguing they interfere with business pricing decisions. The city council also proposed a ban on surveillance pricing, which charges different prices based on personal data, a practice already prohibited in Maryland and vetoed in Colorado. The city will accept public comments on the junk fee rule and hold a hearing before deciding whether to finalize the measure by the end of the year.

Tim Roughgarden, a professor at the Institute for Advanced Study, opened a course that asks what computers cannot do, referencing Alan Turing's 1936 work on the halting problem. The course traces the theoretical foundations of computer science, showing that some problems are unsolvable regardless of resources and introducing algorithmic shortcuts that enable efficient solutions for many problems. Examples include Dijkstra's algorithm for finding shortest routes and Karatsuba's multiplication method, which improve performance over naïve approaches. The Traveling Salesperson Problem is presented as an NP‑complete challenge that resists fast algorithms, illustrating the class of problems that are difficult to solve quickly. The lecture discusses the P versus NP question, its historical development involving Hilbert, Gödel, and von Neumann, and its potential impact on cryptography, artificial intelligence, quantum computing, and the nature of computation itself. No prior technical background is required. Materials such as lectures and a chapter index are available online, and the discussion concludes by emphasizing that while many problems admit efficient algorithms, others remain fundamentally hard, leaving the P versus NP question unresolved and shaping future research directions.

Archaeologists announced the discovery of a Byzantine-era settlement at Dakhla Oasis in Egypt's Western Desert, dating to the 4th century AD.

The site, located in the New Valley governorate, is listed on UNESCO's Tentative List and represents one of the clearest views of life in remote Egyptian oases during the Byzantine period, when the region was part of the Eastern Roman Empire.

Excavations uncovered homes with vaulted roofs, bread ovens, kitchens, stone mills, and a basilica church positioned along a main north-south street. The settlement's layout included broad north-south avenues intersected by east-west roads that formed public squares, and two watchtowers and a fortified building guarded the perimeter. Approximately 200 pottery fragments, known as ostraca, bear inscriptions in Coptic and Greek that record commercial transactions, letters and other daily activities. Additional finds included domestic pottery, oil and perfume bottles, oil lamps, and stone grinding implements.

In a separate excavation near Marina el-Alamein, about 60 miles west of Alexandria, archaeologists uncovered 18 ancient tombs, an 8-foot granite sarcophagus containing human remains, a damaged plaster sphinx, and gold foil placed in the mouths of the interred, a practice known as the "golden tongue." Bronze coins bearing Byzantine emperors and gold coins minted under Emperor Constantius II (AD 337-361) were also recovered.

Mahmoud Massoud, Director General of Dakhla Antiquities and head of the excavation, said the settlement contained all the architectural elements of a fully functioning community. Diaa Zahran, head of the Islamic, Coptic and Jewish Antiquities Sector, noted that the ostraca provide an exceptional documentary record of the city's inhabitants.

The discovery joins another recent find at the site, highlighting the rarity of well-preserved Byzantine settlements in the desert. The Dakhla Oasis location remains on UNESCO's Tentative List, pending further evaluation for possible World Heritage status.

U.S. federal cybersecurity agency CISA said it did not have a prepared response plan for a cybersecurity incident that began in May, according to a postmortem report released on Friday. The agency said its staff had to develop a playbook during the early stages of the incident after an investigative reporter alerted them that a contractor had posted sensitive credentials for government systems on a publicly accessible GitHub repository. The researcher who discovered the exposed credentials attempted to contact the contractor without success, and only after the reporter reached CISA did the agency remove the repository and replace the credentials. CISA stated that no customer or mission data was compromised and thanked the researcher and reporter for their assistance. The agency noted that its procedures for allowing security researchers to report potential incidents were not clearly defined and that it has updated those channels to improve speed and ease of reporting. CISA has been without a permanent director since January 2025, when President Donald Trump began his second term, and has experienced workforce reductions, furloughs, and layoffs affecting roughly one‑third of its staff.

The Instagram account of The Saturday Salon, a lecture series based in Newport Beach, California, posted a photo of a document that appeared to be a cease‑and‑desist letter from surveillance technology firm Flock Safety, sparking renewed criticism of the company. Flock Safety has faced public backlash over its technology and partnerships with law enforcement. The Saturday Salon’s Instagram post, which received more than 3,000 likes, included the caption “WE WILL NOT BE SILENCED.” A separate Bluesky post about the letter garnered over 360 reposts. Flock Safety’s chief strategy officer, Rahul Sidhu, said the company did not send the letter and described it as part of a “mass disinformation campaign” involving a forged signature. Chief legal officer Dan Haley added that Flock is aware of at least two forged letters circulating online and that neither he nor any employee authored the document. The posted letter listed Haley’s title as “Head of Legal Affairs Division,” contrary to his actual title of chief legal officer. An email address shown on the letter bounced when contacted. The Saturday Salon’s founder, Schuyler Lifschultz, said the group would welcome a Flock representative to speak at a future event and emphasized its political neutrality. A second forged letter was shared by musician Noah Orion on Instagram. The document accused Orion of “unauthorized dissemination” of visual materials and warned that failure to comply could lead to “persecution” by Flock Group, a phrase that misuses the word “persecute” instead of “prosecute.” Orion did not respond to a request for comment. Flock Safety stated it encourages public debate about its technology and would be willing to participate in discussions hosted by The Saturday Salon. The company maintains that it has not sought to suppress or prohibit such conversations.

Police and fire departments across the United States increased drone surveillance of illegal fireworks during the Fourth of July holiday, leading to a $100,000 fine imposed by the Sacramento Fire Department and a total of 70 citations amounting to $300,000. The fine was levied after the department used its drones to count fireworks launched from a gathering in the Del Paso Heights neighborhood and identify the source, according to the Sacramento Fire Department and KCRA 3.

Illegal fireworks pose risks of fires, injuries, and noise complaints, and many jurisdictions impose fines ranging from $1,000 to $10,000 per device, with possible felony charges when fires cause property damage or bodily injury. Sacramento County applies a $1,000 per device base fine, increasing to $10,000 for devices used near schools or parks.

In addition to Sacramento, other agencies reported heightened activity. The Orange County Register noted that the Anaheim Police Department used drones to issue 40 citations and confiscate 2,500 pounds of illegal fireworks. The Santa Ana Police Department issued 107 citations to property owners where illegal fireworks were observed and claimed to seize nearly 1,300 pounds of fireworks in a promotional video that included music from the television program Cops. The La Habra Police Department posted footage of a resident lighting a firework in a residential street and said its drone unit contributed to numerous citations and some arrests.

Riverside Police attributed its rise in citations to drone deployment beginning in 2025, as reported by the Los Angeles Times, and listed additional California cities such as Downey, Artesia, Brea, San Bernardino, Stanton, Chino, Hemet, and San Jose as using drones during the holiday. In Texas, the Lewisville Police Department shared footage of responding to 19 fireworks incidents on July 4, and in Washington state the Renton Police Department has used drones for three years to monitor illegal fireworks in the Seattle suburb.

The trend of first‑responder drone programs accelerated after the Federal Aviation Administration revised its regulations in 2025 to expedite waivers for operations beyond visual line of sight, according to the Electronic Frontier Foundation. More than 1,800 police departments and sheriff’s offices operate drones in the United States, according to the EFF Atlas of Surveillance, and the organization has called for clear policies on data retention, audits, and limits on camera use.

Some communities used drones during the 250th anniversary celebrations to replace traditional fireworks with coordinated drone swarms, which are quieter and reduce fire risk in dry conditions.

Residential proxy networks remain a major source of web scraping traffic, overwhelming websites with millions of distinct IP addresses that mimic legitimate users. On July 2, Google announced that, together with the U.S. Federal Bureau of Investigation and other partners, it dismantled a residential‑proxy service called NetNut, temporarily lowering attack volume. The problem, first highlighted in a 2025 article on AI scraper bots, has persisted as attackers use compromised home devices and poorly secured streaming hardware to route traffic through central command nodes. Operators include criminal groups that install malware on devices, and commercial services such as Bright Data that market "ethically sourced" IPs and invite users to route traffic through their devices as part of a VPN. While large AI developers generally scrape sites openly and honor robots.txt, the scale of residential‑proxy attacks far exceeds their traffic. Website operators have responded with proof‑of‑work systems like Anubis, CAPTCHA challenges, login requirements and data‑poisoning tools, but these measures can hinder real users and legitimate crawlers. LWN, which has faced its heaviest scraper attack in July, has optimized its site and deployed defenses that minimize impact on logged‑in users while occasionally affecting anonymous visitors. The funding source for the proxy networks is unclear, and there is no public evidence that leading model companies are using these networks. The industry continues to face an arms race, and a lasting solution remains pending.

Microsoft announced that it would cut more than 5,000 jobs from five studios acquired previously, with about half of the reductions taking effect immediately and the remainder scheduled through the remainder of the year.

The company had previously been rumored to reduce staff after a period of leaks, and state WARN notices filed in several U.S. jurisdictions have now detailed the specific numbers for each studio.

According to the notices, Obsidian Entertainment is reducing its workforce by 52 employees, Zenimax Online Studios by 213, and Zenimax HQ by 166. GameFile reported that the layoffs represent roughly 25 percent of Obsidian's staff. Industry reporter Jason Schreier said the changes mark a strategic shift for Obsidian, leading to the cancellation of a sequel to Avowed in favor of development on a new Fallout title.

Microsoft has not provided a timeline for completing the remaining reductions, and the broader impact on its gaming portfolio remains unclear.

Alex Anderson‑McLeod released LisaFPGA, an open‑source recreation of Apple’s Lisa computer that runs on an FPGA board. Hardware sales began in May and continue through two vendors, MacEffects and Joe’s Computer Museum. The project provides a bitstream that can be downloaded for users to assemble their own boards. The README states that onboard ESP32‑based floppy drive emulation does not yet work and that support for Twiggy drives via an optional breakout board is currently untested. The Lisa computer, introduced in 1983, was one of the first mass‑market systems with a graphical user interface, but only about 2,700 units were produced and most were discarded. Apple released the Lisa OS source code in 2023 under the Apple Academic License Agreement, which permits recompilation and study but forbids redistribution. Anderson‑McLeod compiled the OS after obtaining the source from the Computer History Museum and applied that knowledge to the FPGA design. The LisaFPGA board is priced at £264.89 from MacEffects and $350 from Joe’s Computer Museum. The first batch sold out, and the vendors will contact buyers when the next batch is ready. A separate Lisa GUI website recreates the machine’s user interface in a web browser. The LisaEm emulator, hosted on GitHub, is maintained by Ray Arachelian, who died in 2023, leaving the project at version 1.2.7 release candidate 4. The developer has invited community contributions to complete the floppy emulation and expand functionality.

ASUS announced the ROG Raikiri II Pro PC controller, a high‑end device aimed at PC gamers. The controller includes hot‑swappable TMR joysticks, a magnetic faceplate, a low‑latency 8K polling rate, and up to 79 hours of battery life when operating at a 1000 Hz refresh rate. It offers four rear buttons, two bumper buttons and four face buttons that can be customized, as well as dual‑mode triggers that switch between TMR and micro‑switch mechanisms.

The most distinctive element is a full‑colour panel on the front of the controller, similar to the PlayStation 5 touchpad. The panel can display game profiles, button remapping options, lighting effects, vibration intensity, animations and calibration data, according to the company.

While console manufacturers typically limit third‑party controller designs, PC‑focused peripheral makers have more latitude to incorporate advanced features such as interchangeable components and high‑refresh polling rates.

Accessories supplied with the unit include a dedicated charging case, a charging stand, rear button cover plates, two additional TMR modules and two interchangeable joystick caps—one concave and one convex. ASUS has not disclosed a retail price, but the array of features suggests a premium price point.

The company has not indicated a release date, and it remains unclear whether the full‑colour display will provide measurable benefits beyond customization.

OpenAI announced that its AI browser experiment, ChatGPT Atlas, will cease operations on August 9, less than a year after its October 2025 launch. The company said the browsing features will be integrated into its new ChatGPT Work platform. Atlas was launched to let the browser read web pages, rewrite content, answer questions and eventually perform clicks itself. It was presented as a way to bring AI directly to the open web. Soon after launch, security researchers demonstrated that prompt injection attacks could cause Atlas to follow malicious instructions embedded in web pages. They also found that malformed URLs could expose information about previously visited sites. Neither issue caused immediate failure, but they highlighted limits of the technology. OpenAI said it will not continue a standalone browser and will instead embed its browsing functions in ChatGPT Work. The new platform bundles ChatGPT, Codex and other tools into a single desktop application. ChatGPT Work runs on GPT‑5.6 and includes plugins for Slack, Microsoft Teams, Google Drive, SharePoint, email, calendars and other business services. Users can access these tools automatically or on request. The application can generate documents, spreadsheets, presentations and websites and support long‑running projects. Codex is no longer offered as a separate product. It is now part of ChatGPT Work and adds inline diff editing, pull request reviews and support for multiple repositories. ChatGPT Work is available on desktop for all plan tiers immediately. Web and mobile versions will roll out to Plus, Pro, Business, Enterprise and Edu users over the next few days. The shift moves AI browsing from a separate browser to a component of broader productivity tools. The effect on the future of AI‑first web navigation remains to be seen.

Hugging Face CEO Clem Delangue said companies are moving from rented AI services to open‑source models as costs increase. The company, which now serves roughly half of the Fortune 500, has become a hub where AI developers share and download models and data sets. In a TechCrunch Equity podcast interview with Rebecca Bellan, Delangue described the shift from frontier APIs to open‑source solutions as companies scale. He noted that the halted release of Anthropic’s Fable model illustrates challenges faced by closed‑source providers. Delangue warned that a small number of large firms could come to dominate AI development, raising concerns about market concentration. The discussion highlighted growing adoption of open‑source AI across industries and raised questions about the sustainability of the trend.

APR engineers are working to modify engine control unit software to extract additional horsepower and torque from vehicles, a practice that has become more complex as manufacturers strengthen security measures. The company, Alabama‑based APR, notes that early tuning methods involved removing and reprogramming memory chips, while the introduction of the OBD2 diagnostic port in 1996 enabled software updates through the vehicle’s data port. The Enhanced Modular Chipping System, introduced by APR, added four separate engine maps and a processor that can switch between them based on conditions such as fuel type or driver input. Modern ECUs now require hundreds of parameter adjustments to maintain factory protections, with some calibrations involving more than 400 changes for models such as the 2022 Volkswagen GTI and the Porsche 911 Carrera. APR engineers say that each change can affect many other variables, making it necessary to test dozens of parameters to achieve a stable tune. In motorsports, the team has used the same approach to adjust boost levels in real time during competition, implementing a push‑to‑pass system that temporarily increases output without triggering error conditions. The process can risk damaging the ECU, with the company noting that failed attempts have resulted in costly replacement units. Ongoing challenges include evolving OEM security, varying regional specifications, and the emergence of hybrid powertrains that add new software layers. APR engineers indicate that they must continue to develop new methods to bypass security measures and adapt to new hardware as the industry progresses.

OpenAI announced a series of leadership changes effective immediately. Fidji Simo, CEO of AGI deployment, will take medical leave for several weeks due to a neuroimmune condition, while Kate Rouch, chief marketing officer, is stepping down to focus on her health. Brad Lightcap, chief operating officer, is transitioning to a special projects role, and Denise Dresser will assume his prior responsibilities, with a search for a permanent replacement to follow. Greg Brockman will oversee product development. In an internal memo, Simo explained that her leave is necessary to address her health, noting that the company has a leadership team ready to continue execution. Brockman will lead product, including the super app effort, while Jason Kwon, Sarah Friar and Denise Dresser will manage business operations. Gary Briggs will serve as interim CMO and will coordinate the search for Rouch’s successor, with input from Rouch during her leave. Lightcap will shift focus to special projects reporting to CEO Sam Altman, and his previous duties in government relations and OpenAI for Countries will be transferred to the strategy organization. OpenAI spokesperson Elana Widmann said the company remains focused on advancing frontier research, growing its user base of nearly one billion, and supporting enterprise customers. The leadership adjustments aim to sustain OpenAI’s momentum as it pursues growth and product development.

Brown University chemists have reported experimental evidence that relativistic effects alter the structure of triple chemical bonds in heavy elements, as detailed in a Science paper published July 9, 2026. In classical chemistry, a triple bond comprises one sigma bond and two pi bonds, with the sigma bond formed by head‑on orbital overlap and the pi bonds by side‑by‑side overlap. At the bottom of the periodic table, heavy nuclei increase electron velocities to a significant fraction of light speed, invoking Einstein’s theory of relativity. The Brown team created molecules combining carbon with bismuth, a heavy element adjacent to lead, and cooled them to near absolute zero before analyzing them with photoelectron spectroscopy, which measures electron ejection distances to infer bond strength. The resulting spectrum indicated that the carbon‑bismuth bonds did not conform to the textbook sigma‑pi model; instead they displayed one pi bond and two hybrid sigma‑pi bonds. ‘The boundary between a sigma bond and a pi bond is now sort of smeared,’ said Lai‑Sheng Wang, a chemistry professor at Brown and corresponding author of the study. ‘We still have three bonds, but we do not strictly have a sigma or a pi.’ The findings suggest that chemistry textbooks may need revision as research on heavy elements expands, particularly for applications such as non‑toxic alternatives to lead in solar cells and for quantum materials. Funding for the work was provided by the U.S. National Science Foundation (CHE‑2403841) and the U.S. Department of Energy (DE‑SC0008501). Further studies are expected to assess the prevalence of relativistic bonding across other heavy elements.

Combustion Lab provides an interactive, web‑based engine dynamics simulator, version 2.0. The tool models a four‑cylinder, turbocharged engine with a bore of 82.5 mm, a stroke of 92.8 mm, a compression ratio of 9.6:1 and a displacement of 1.98 L. It supports boost up to 120 kPa and a redline of 6800 rpm. Each operating point runs a single‑zone, crank‑angle‑resolved thermodynamic model that integrates the first law of thermodynamics in 0.5° steps. Heat release follows a Wiebe curve, with parameters adjusted for engine speed and mixture, while wall losses are estimated using the Woschni correlation, friction using the Chen–Flynn model, and pumping loss calculated from exhaust backpressure. Knock is evaluated with the Livengood–Wu integral and the Douaud–Eyzat induction‑time correlation. The simulator reports power of 92.5 kW, torque of 276 N·m, brake specific fuel consumption of 234 g/kWh, as well as BMEP, volumetric efficiency, MAP, boost, air‑fuel ratio, fuel flow, brake thermal efficiency, peak pressure and exhaust temperature. The model is zero‑dimensional, uses single‑zone temperatures, does not simulate wave dynamics in the intake or exhaust, and only evaluates steady‑state conditions, making it suitable for educational and concept‑development purposes rather than design certification.

May 5, 2026 — The author explains that they use Anki, a flashcard application that incorporates spaced repetition, to review mathematical concepts and other subjects after extended periods of disuse.

The writer notes that flashcards are often viewed as tools for rote memorization, a perception prevalent in science, technology, engineering and mathematics (STEM) communities. Research on spaced repetition indicates that reviewing material at increasing intervals can improve long‑term retention.

The author creates most cards by hand, focusing on concepts, intuition and "A‑ha" moments rather than textbook definitions. Deck organization includes a dedicated set for problems previously solved incorrectly, allowing scheduled practice. Review sessions typically last one to thirty minutes per day, depending on recent card additions.

The software interface appears dated, the HTML editor is complex, and the file format is not publicly documented, which complicates data portability. Alternative plain‑text spaced‑repetition tools have not matched Anki’s flexibility.

Understanding the material before creating or using flashcards is emphasized; the author states that memorization without comprehension is ineffective. Cards are used after mastery to maintain familiarity.

The author also links flashcard creation with a broader note‑taking practice, citing external sources for further reading. While empirical evidence specific to Anki in STEM fields is limited, the author finds the approach valuable for preserving knowledge over extended intervals.