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Dual interfacial H-bonding-enhanced deep-blue hybrid copper–iodide LEDs

news.ycombinator.com Unknown 2025-07-17 00:27:58

Solution-processed light-emitting diodes (LEDs) are emerging as a promising technology for advanced solid-state lighting (SSL) and display industries, owing to their energy-efficient, low-cost, and straightforward manufacturing processes1-3. In this realm, lead-halide based perovskites4, organic semiconductors5, and colloidal core–shell quantum dots (QDs)6 have gained recognition as promising candidates. They have been utilized as emitting layers via solution processing and achieved impressive p

Topics: band cui fig hda nm
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How a circuit breaker finder helped me map my home's wiring (and why that matters)

zdnet.com David Gewirtz 2025-07-22 18:00:15

ZDNET's key takeaways The Klein Tools 80016 Circuit Breaker Finder effectively maps circuits throughout your home. It's a useful tool with clear discovery indicators and improved safety features. It's somewhat pricey at $65, with minimal directions for beginners. $64.98 at Amazon Do you ever wonder what wall socket corresponds to which circuit breaker or circuit in your main electrical panel? Do you ever wonder how much current a particular socket can handle? I did. I found a cool tool in the

Topics: 3d breaker circuit printers socket
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Show HN: BreakerMachines – Modern Circuit Breaker for Rails with Async Support

news.ycombinator.com Unknown 2025-08-01 16:35:28

BreakerMachines The circuit breaker that went where no Ruby has gone before! ⭐ A battle-tested Ruby implementation of the Circuit Breaker pattern, built on state_machines for reliable distributed systems protection. Quick Start gem ' breaker_machines ' class PaymentService include BreakerMachines :: DSL circuit :stripe do threshold failures : 3 , within : 1 . minute reset_after 30 . seconds fallback { { error : "Payment queued for later" } } end def charge ( amount ) circuit ( :stripe ) . w

Topics: async circuit docs md redis
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Apple cleared in case tied to two union-busting allegations at NYC retail store

9to5mac.com Marcus Mendes 2025-08-09 07:29:52

Yesterday, the U.S. Court of Appeals for the Fifth Circuit overturned a National Labor Relations Board (NLRB) decision that found Apple in violation of federal labor law at its World Trade Center retail store in New York. Here’s what that means. A bit of background The case centers on events from 2022, during an organizing campaign by Apple store employees in coordination with the Communications Workers of America (CWA). One employee, Jordan Vasquez, testified that a senior manager asked him

Topics: apple board circuit fifth organizing
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How to use a circuit breaker finder to understand your home's wiring (and why it matters so much)

zdnet.com David Gewirtz 2025-08-23 03:31:00

ZDNET's key takeaways The Klein Tools 80016 Circuit Breaker Finder effectively maps circuits throughout your home. It's a useful tool with clear discovery indicators and improved safety features. It's somewhat pricey at $65, with minimal directions for beginners. $64.98 at Amazon Do you ever wonder what wall socket corresponds to which circuit breaker or circuit in your main electrical panel? Do you ever wonder how much current a particular socket can handle? I did. I found a cool tool in the

Topics: breaker circuit printers socket wall
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Supreme Court overturns 5th Circuit ruling that upended Universal Service Fund

arstechnica.com Unknown 2025-08-24 03:32:55

The Supreme Court today reversed a ruling that threatened the future of the Federal Communications Commission's Universal Service Fund. In a 6–3 opinion, the high court said the US Court of Appeals for the 5th Circuit erred when it found that Universal Service fees on phone bills are an illegal tax. Universal Service is an $8 billion-a-year system that is used to expand telecom networks and make access more affordable through programs such as Lifeline discounts and deployment grants for Interne

Topics: circuit court fcc service universal
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A 5-minute circuit scan exposed a serious wiring surprise in my home (and save my hundreds)

zdnet.com David Gewirtz 2025-08-24 15:16:00

ZDNET's key takeaways The Klein Tools 80016 Circuit Breaker Finder effectively maps circuits throughout your home. It's a useful tool with clear discovery indicators and improved safety features. It's somewhat pricey at $65, with minimal directions for beginners. View now at Amazon Do you ever wonder what wall socket corresponds to which circuit breaker or circuit in your main electrical panel? Do you ever wonder how much current a particular socket can handle? I did. I found a cool tool in t

Topics: breaker circuit printers socket wall
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How a 5-minute circuit scan saved me hundreds (and exposed a serious wiring surprise)

zdnet.com David Gewirtz 2025-08-25 18:00:19

ZDNET's key takeaways The Klein Tools 80016 Circuit Breaker Finder effectively maps circuits throughout your home. It's a useful tool with clear discovery indicators and improved safety features. It's somewhat pricey at $65, with minimal directions for beginners. $64.98 at Amazon Do you ever wonder what wall socket corresponds to which circuit breaker or circuit in your main electrical panel? Do you ever wonder how much current a particular socket can handle? I did. I found a cool tool in the

Topics: breaker circuit printers socket wall
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Reinventing circuit breakers with supercritical CO2

news.ycombinator.com Emily Waltz 2025-09-15 05:01:38

Researchers this month will begin testing a high-voltage circuit breaker that can quench an arc and clear a fault with supercritical carbon dioxide fluid. The first-of-its-kind device could replace conventional high-voltage breakers, which use the potent greenhouse gas sulfur hexafluoride, or SF 6. Such equipment is scattered widely throughout power grids as a way to stop the flow of electrical current in an emergency. “SF 6 is a fantastic insulator, but it’s very bad for the environment—probab

Topics: breaker circuit gas high sf
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Computing’s Top 30: Sukanya Meher

computer.org Jasmine Ang 2025-09-16 07:00:50

Sukanya S. Meher loves a good intersection. Especially the one between theory and application, which she first seriously explored in the realm of superconductor electronics. Today, Meher works in electronic design automation (EDA), bringing with her a unique perspective on circuit design, modeling, simulation, and tool development. This EDA work is also giving her the chance to explore a new intersection: that between technology design and customer success. As an AMS staff engineer at Synopsys

Topics: circuits design ieee superconducting women
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