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Retailers overstate range claims on digital TV antennas sold on Amazon

Digital TV antennas sold online, some marketed with claimed ranges up to 6,000 miles, cannot actually deliver anything close to that distance because of basic physics. Signal reception depends on a relatively clear line of sight to a broadcast transmitter, and Earth's curvature, along with buildings, hills and trees, limits how far a signal can realistically travel before dropping below the horizon.

Researcher completes first file transfer using homemade magnetic core memory USB drive

Japanese researcher @dydt_Nao successfully demonstrated a dinner-plate-sized USB flash drive built from magnetic core memory, transferring both a text file and a small monochrome bitmap image between two PCs. The device, which uses a Raspberry Pi Pico as its controller, stores only 128 bytes of data and displays activity through a 32x32 LED array that lights up as each magnetic core is accessed. The creator plans to showcase the device at Maker Faire Tokyo 2026 in early September.

The Magic Eye Tube: A Look Back at Radio's Vacuum-Tube Tuning Indicator

The magic eye tube, invented by Allen B. DuMont in 1932, was a vacuum tube used to visually indicate signal strength in radio receivers, helping users tune into stations accurately. RCA released the first commercial version, the 6E5, in 1935, and these tubes remained common in radios until around 1980, when transistors replaced vacuum tube technology.

Large Study Links Xylitol Sweetener to Higher Risk of Heart Attack and Stroke

Researchers analyzing blood samples from 17,710 people found that those with the highest xylitol levels were 57% more likely to die or suffer a heart attack or stroke within six years than those with the lowest levels, with elevated risk persisting for decades. The findings, presented at the European Society of Cardiology's annual congress in Munich, showed a dose-dependent relationship between xylitol blood levels and cardiovascular events.

Formula E marks 12 years as EV testbed, backed by B Corp status

Formula E CEO Jeff Dodds reflects on the racing series' evolution from a fledgling 2014 championship, where cars needed mid-race swaps to finish, into a global motorsport with vehicles exceeding 200 mph. Dodds, a former Volvo and Honda motorsport executive, frames Formula E as both a competitive sport and a real-world laboratory for electric vehicle technology, noting it remains the only sport certified as a B Corporation.

Nvidia Supplies Chips and Software Powering China's Robotics Boom

Chinese robotics firms are building humanoid and industrial robots using Nvidia's chips and simulation software, an area of AI hardware trade that remains largely permitted under current U.S. export rules. Nvidia has positioned itself as a key infrastructure provider for this 'physical AI' sector, supplying both computing power and development platforms to Chinese customers despite broader U.S.-China tech tensions.

Apple reportedly targets 2026 launch for first AI-powered smart glasses

Apple is preparing to release its first smart glasses as early as next year, built around Siri and Visual Intelligence rather than augmented-reality displays. The glasses will use cameras and microphones to let Siri interpret surroundings, translate text, and answer contextual questions, plus built-in speakers for audio, according to a Bloomberg report citing Mark Gurman. Apple is designing multiple frame styles in-house using acetate material, with possible future versions adding health-tracking features like heart-rate sensors.

Martin Uecker details GCC hack for nested-function callbacks without executable stack

A technical blog post by Martin Uecker examines how GCC compiles nested functions using trampolines placed on the stack, which normally require the stack to be executable. He shows that by extracting the code address and static chain values embedded in the trampoline and passing them to the __builtin_call_with_static_chain built-in, developers can indirectly call nested functions on older GCC versions without needing an executable stack.

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