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3 Best Hall Effect Keyboards for Gamers and Serious Typists (2025)

wired.com Henri Robbins 2025-07-24 06:03:00

Polling rate is likely one of the most prominently displayed details on any Hall effect keyboard, purely because the large numbers emphasize one of the most important aspects of these keyboards: Speed. Whether a keyboard has a 1,000- or 10,000-Hz polling rate, this number represents how many messages are sent from the keyboard to the PC every second. For example, a keyboard with 1,000-Hz polling will send 1000 messages every second. Most office equipment operates at 125 Hz. In high-performance g

Topics: 000 distance hz keyboard keyboards
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Petabit-class transmission over > 1000 km using standard 19-core optical fiber

news.ycombinator.com Unknown 2025-07-25 22:06:20

An international research team led by the Photonic Network Laboratory at the National Institute of Information and Communications Technology (NICT, President: TOKUDA Hideyuki Ph.D.), and including Sumitomo Electric Industries, Ltd. (Sumitomo Electric, President: INOUE Osamu) have set a new world record in optical fiber communications, achieving data transmission at 1.02 petabits per second over a distance of 1,808 kilometers (roughly equivalent to the distance from Sapporo to Fukuoka, from Misso

Topics: communication distance fiber optical transmission
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HyAB k-means for color quantization

news.ycombinator.com Unknown 2025-08-05 18:34:30

HyAB k-means for color quantization Color quantization in CIELAB space, visualized. The input is converted to CIELAB space and a special “HyAB” distance formula is used when clustering. This in theory should result in better image quality. I’ve been obsessing over color quantization algorithms lately, and when I learned that an image conversion app called Composite did its so-called pixel mapping step in CIELAB space, I instantly thought of the “HyAB” color distance formula I’d seen in the FLI

Topics: cielab color distance hyab means
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Collatz's Ant and Σ(n)

news.ycombinator.com Unknown 2025-08-11 23:12:45

Collatz's Ant and Σ(n) Relevant preceding posts here and here. Consider the corresponding ant’s landscape development for $n = 500$: with the last frame being: Let’s also consider a score function $\Sigma(n)$ which returns the number of 1’s (or marked states) left by the ant on the corresponding landscape (regarding the last frame). With the prior example, we would have $\Sigma(500) = 54$. We might also want to normalize this by the corresponding stopping time $\tau_{n}$ characteristic of th

Topics: 500 ant consider corresponding distance
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Painting with Math: A Gentle Study of Raymarching (2023)

news.ycombinator.com Unknown 2025-09-05 09:52:17

Most of my experience writing GLSL so far focused on enhancing pre-existing Three.js/React Three Fiber scenes that contain diverse geometries and materials with effects that wouldn't be achievable without shaders, such as my work with dispersion and particle effects. However, during my studies of shaders, I always found my way to Shadertoy, which contains a multitude of impressive 3D scenes featuring landscapes, clouds, fractals, and so much more, entirely implemented in GLSL. No geometries. No

Topics: distance float raymarching scene vec3
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Painting with Math: A Gentle Study of Raymarching

news.ycombinator.com Unknown 2025-09-06 15:52:17

Most of my experience writing GLSL so far focused on enhancing pre-existing Three.js/React Three Fiber scenes that contain diverse geometries and materials with effects that wouldn't be achievable without shaders, such as my work with dispersion and particle effects. However, during my studies of shaders, I always found my way to Shadertoy, which contains a multitude of impressive 3D scenes featuring landscapes, clouds, fractals, and so much more, entirely implemented in GLSL. No geometries. No

Topics: distance float raymarching scene vec3
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DARPA program sets distance record for power beaming

news.ycombinator.com Unknown 2025-09-14 23:40:40

In a series of recent tests in New Mexico, the Persistent Optical Wireless Energy Relay (POWER) program achieved several new records for transmitting power over distance. The team recorded more than 800 watts of power delivered during a 30-second transmission from a laser 8.6 kilometers (5.3 miles) away. Over the course of the test campaign, more than a megajoule of energy was transferred. Previously, the greatest reported distance records for an appreciable amount of optical power (>1 microwat

Topics: distance energy power receiver test
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