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A single, 'naked' black hole confounds theories of the young cosmos

news.ycombinator.com Charlie Wood 2025-09-27 22:27:12

A black hole unlike any seen before has been spotted in the early universe. It’s huge and appears to be essentially on its own, with few stars circling it. The object, which may represent a whole new class of enormous “naked” black holes, upends the textbook understanding of the young universe. “This is completely off the scale,” said Roberto Maiolino, an astrophysicist at the University of Cambridge who helped reveal the nature of the object in a preprint posted on August 29. “It’s terribly ex

Topics: black dots holes red universe
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Dotter: Dotfile manager and templater written in Rust

news.ycombinator.com Unknown 2025-10-03 12:08:05

What is Dotter? Dotter is a dotfile manager and templater. Dotfiles are configuration files that usually live in the home directory and start with a dot. Often times, it is desirable to have a backup of all the configurations on your system, which is why a lot of users have their dotfiles saved in a git repository, then symlinking them to their target locations using ln -s . However, there are several issues with that barebones approach: Hard to keep track of what comes from where once you h

Topics: default dotter files location run
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AI Companion App Shuts Down Amid Controversy

futurism.com Unknown 2025-10-09 08:30:19

In the frenetic world of artificial intelligence, virtual companions have exploded into a market all their own. A recent survey found that some 72 percent of teens said they've experimented with artificial buddies. Of those, over 50 percent say they have a regular relationship with the chatbots. But there's no guarantee those companions will stick around forever — something users of the AI startup Dot are learning the hard way after the company announced it was going belly up on Friday. Found

Topics: ai chatbots dot intelligence users
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The "impossibly small" Microdot web framework

news.ycombinator.com Unknown 2025-10-09 07:38:30

The "impossibly small" Microdot web framework Benefits for LWN subscribers The primary benefit from subscribing to LWN is helping to keep us publishing, but, beyond that, subscribers get immediate access to all site content and access to a number of extra site features. Please sign up today! The Microdot web framework is quite small, as its name would imply; it supports both standard CPython and MicroPython, so it can be used on systems ranging from internet-of-things (IoT) devices all the way

Topics: flask lines microdot micropython web
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Personalized AI companion app Dot is shutting down

techcrunch.com Sarah Perez 2025-10-10 04:27:47

Dot, an AI companion app that aimed to be a friend and confidante, is shutting down, the company announced on Friday. On a message published on its website, the startup behind Dot, New Computer, said that the product will remain operational until October 5, giving users time to download their data. Launched in 2024 by co-founders Sam Whitmore and former Apple designer Jason Yuan, Dot waded into what’s now become a more controversial area for AI chatbots. The app they created was described as an

Topics: ai companion data dot time
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How to design a DBMS for Telco requirements

news.ycombinator.com Mikael Ronstrom 2025-10-17 16:29:28

My name is Mikael Ronstrom and I work for Hopsworks AB as Head of Data. I also assist companies working with NDB Cluster as self-employed consultant. I am a member of The Church of Jesus Christ of Latter Day Saints. I can be contacted at mikael dot ronstrom at gmail dot com for NDB consultancy services. The statements and opinions expressed on this blog are my own and do not necessarily represent those of Hopsworks AB.

Topics: ab dot hopsworks mikael ronstrom
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QLED vs. LED: Which Is Better?

cnet.com See Full Bio 2025-11-03 08:00:08

Two of the most popular TV technologies are QLED and the Q-less, regular LED. These two technologies are functionally similar, but their performance tends to be quite different. Generally speaking, QLED TVs are typically more expensive (though that price difference has decreased significantly in the last few years), but are also usually brighter and have better colors. It's worth mentioning up front that both QLED and traditional LED TVs are versions of LCD. They both use LCD panels to create a

Topics: dots led qled quantum tvs
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Deal: Save 24% on the Amazon Echo Dot

androidauthority.com Unknown 2025-11-09 17:24:57

Edgar Cervantes / Android Authority Amazon Echo speakers go on massive sales a few times a year, the hottest ones being during Prime Day and the holidays. Deals get pretty slow the rest of the year, but if you’re itching for a smart speaker right now, here’s a really nice deal. The Amazon Echo Dot is 24% right now, bringing the cost down to $37.99. Get the Amazon Echo Dot for just $37.99 ($12 off) This offer is available directly from Amazon as a “limited time deal.” The discount applies to al

Topics: amazon dot echo speaker use
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Your iPhone has a secret in-car feature that's seriously underutilized - here's how to access it

zdnet.com Lance Whitney 2025-11-20 16:47:00

Lance Whitney/ZDNET I've always had a mixed experience with motion sickness. I don't suffer from it on a plane or ship, thankfully. But put me in the back seat of a car, and I often get hit by a bad case of it, especially if the ride is twisty and turny. Triggered by mixed signals across your eyes, inner ear, and brain, those feelings of dizziness and queasiness can be extremely uncomfortable. For anyone else who experiences motion sickness, you can turn to your iPhone for help. Also: Install

Topics: cues dots iphone motion vehicle
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Trump administration stops illegal freeze of $5B EV charger funds after losing in court

techcrunch.com Sean O'Kane 2025-11-26 05:12:08

The Trump administration has finally issued new guidance that states can use to dole out $5 billion in funding for electric vehicle charging infrastructure, after spending months withholding the money. A coalition of states sued over the funding freeze in the National Electric Vehicle Infrastructure (NEVI) program, which was one of the administration’s many attempts to stop funding appropriated by Congress at the start of Donald Trump’s second term. A judge ruled in June that those states were

Topics: administration dot funding infrastructure states
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Trump admin stops illegal freeze of $5B EV charger funds after losing in court

techcrunch.com Sean O'Kane 2025-11-26 11:12:08

The Trump administration has finally issued new guidance that states can use to dole out $5 billion in funding for electric vehicle charging infrastructure, after spending months withholding the money. A coalition of states sued over the funding freeze in the National Electric Vehicle Infrastructure (NEVI) program, which was one of the administration’s many attempts to stop funding appropriated by Congress at the start of Donald Trump’s second term. A judge ruled in June that those states were

Topics: administration dot funding issued states
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New Gel Could Heal Stubborn Diabetic Wounds in Under 2 Weeks

gizmodo.com Natalia Mesa 2025-11-28 11:55:22

For people with diabetes, high blood sugar can damage blood vessels and nerves, leading to chronic wounds that stay open for months. But a new gel-based treatment could massively speed up the healing process for people with diabetes, allowing wounds to close in just days, according to a new study. The new treatment targets thrombospondin-1 (TSP-1), a protein that inhibits the growth of new blood vessels, a crucial step in the healing process. Targeting this protein increased new blood vessel fo

Topics: blood cells endothelial new tsp
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Dotfiles feel too personal to share

news.ycombinator.com Juha-Matti Santala 2025-12-04 02:36:01

I love dotfiles. “Dotfiles” is a term that refers to configuration files used to configure software and operating systems. They are called such because often these files start with a dot. You may have seen .bashrc , .tmux.conf or .zshrc in the wild. Whenever a software doesn’t offer direct file-based configuration, I feel sad because it means I need to take extra steps to keep my configuration across different devices in sync or when setting up a new machine. I love sharing. I regularly publ

Topics: configuration dotfiles feel files folder
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Dotfiles feel too intimate and personal to share

news.ycombinator.com Juha-Matti Santala 2025-12-05 02:36:01

I love dotfiles. “Dotfiles” is a term that refers to configuration files used to configure software and operating systems. They are called such because often these files start with a dot. You may have seen .bashrc , .tmux.conf or .zshrc in the wild. Whenever a software doesn’t offer direct file-based configuration, I feel sad because it means I need to take extra steps to keep my configuration across different devices in sync or when setting up a new machine. I love sharing. I regularly publ

Topics: configuration dotfiles feel files folder
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Get more done with less effort — These productivity-boosting gadgets now start from $119

androidauthority.com Unknown 2026-01-23 02:13:06

Many people use AI tools to enhance their work efficiency and productivity, but very few can do it all. If you’re looking for a handy AI assistant to elevate your meeting experiences with useful transcriptions, summaries, to-do lists, and so much more, viaim has you covered. And, did we mention that these come in the ultra-portable form of wireless earbuds or PC accessories? Viaim’s AI-powered earbuds and meeting tools are a must-have if you regularly attend meetings or take online classes. And

Topics: ai assistant meeting recdot viaim
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You definitely should not buy an Echo Dot this Prime Day

engadget.com Unknown 2026-01-25 02:46:26

Engadget has been testing and reviewing consumer tech since 2004. Our stories may include affiliate links; if you buy something through a link, we may earn a commission. Read more about how we evaluate products . Prime Day is basically Black Friday for Amazon’s own devices. For almost as long as the shopping event has taken place (it started in July 2015, if you forgot), it’s been one of the most reliable days of the year to snag Amazon gadgets like Kindles Echo speakers and Fire tablets at dir

Topics: amazon day dot echo prime
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Product of Additive Inverses

news.ycombinator.com Unknown 2026-01-25 15:50:38

Product of Additive Inverses By Susam Pal on 29 May 2025 A negative number multiplied by another negative number results in a positive number. Most of us learnt this rule during our primary or secondary school years. 'Negative times negative equals positive' was a phrase drummed into us during mathematics lessons. In this article, we will prove this rule, not just for numbers but for any algebraic structure that, in a general sense, behaves somewhat like numbers. Contents Illustration Let u

Topics: additive cdot multiplication ring times
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You absolutely should not buy an Echo Dot on Prime Day

engadget.com Unknown 2026-02-01 03:30:23

Engadget has been testing and reviewing consumer tech since 2004. Our stories may include affiliate links; if you buy something through a link, we may earn a commission. Read more about how we evaluate products . Prime Day is basically Black Friday for Amazon’s own devices. For almost as long as the shopping event has taken place (it started in July 2015, if you forgot), it’s been one of the most reliable days of the year to snag Amazon gadgets like Kindles Echo speakers and Fire tablets at dir

Topics: amazon day dot echo prime
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This is not a tattoo robot

theverge.com Mack Degeurin 2026-02-05 21:00:00

I walked into Blackdot’s tattoo studio in Austin’s east side on a sweltering May afternoon. After shaking my sweat-soaked hand, founder and CEO Joel Pennington led me up into an office building and opened the door to a small, three-room space. Critics have unflatteringly compared the studio to a sterile hospital room — a comparison not entirely without merit. In a corner room, the machine I had come here to see loomed: a humming, fridge-sized device reminiscent of an old X-ray unit. Blackdot cal

Topics: blackdot device pennington says tattoo
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I replaced my Bose Ultra Open with these Shokz headphones - they're better for less money

zdnet.com Jada Jones 2026-02-22 18:45:15

ZDNET's key takeaways The Shokz OpenDots One are the company's first clip-on earbuds, available in Black and Grey for $199. They sport a comfortable, nondescript design with Shokz's industry-leading bone conduction audio technology. However, the earbuds' touch controls are unreliable and awkward to use. View now at Shokz View now at Best Buy View now at Amazon more buying choices I used to not be a Shokz believer; the company's headphones seemed best suited for running or swimming, neither of

Topics: ear earbuds open opendots shokz
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viaim RecDot AI earbuds now on Amazon — with more smart meeting tools to come

androidauthority.com Unknown 2026-03-14 14:05:46

AI is everywhere. And while the goal is to help people work smarter and more efficiently, it’s not the most easily accessible. Different tools perform different tasks, so you’re either struggling to find the best option or stuck footing a hefty bill for various services. What if there was a device that could take your work efficiency to the next level, making attending virtual meetings a breeze, and you could carry it around in your pocket? That’s exactly what you get with the viaim Recdot AI e

Topics: ai meeting meetings recdot viaim
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Major sugar substitute found to impair brain blood vessel cell function

news.ycombinator.com Justin Jackson 2026-03-17 02:05:00

This article has been reviewed according to Science X's editorial process and policies . Editors have highlighted the following attributes while ensuring the content's credibility: Credit: Pixabay/CC0 Public Domain Erythritol may impair cellular functions essential to maintaining brain blood vessel health, according to researchers at the University of Colorado Boulder. Findings suggest that erythritol increases oxidative stress, disrupts nitric oxide signaling, raises vasoconstrictive peptide

Topics: approximately endothelial erythritol microvascular oxide
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Amazon’s Newest Model of Echo Dot Drops to Its Lowest Price of the Year, No Need to Wait for Prime Day

gizmodo.com Brittany Vincent 2026-03-18 23:10:44

If you’ve ever wished your alarm clock could actually do something useful, like read you the news, show you the weather, or remind you of your grocery list, you need to invest in an Amazon Echo product. These devices can do all of that and more, all without forcing you to spend money you don’t have or don’t want to spend. And right now, you can get an even more affordable one thanks to this sale that’s live now. See at Amazon Head to Amazon to get the Amazon Echo Dot for $35, down from its usu

Topics: amazon dot echo just smart
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