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New colors without shooting lasers into your eyes

news.ycombinator.com Unknown 2025-07-17 16:01:17

1. Your eyes sense color. They do this because you have three different kinds of cone cells on your retinas, which are sensitive to different wavelengths of light. For whatever reason, evolution decided those wavelengths should be overlapping. For example, M cones are most sensitive to 535 nm light, while L cones are most sensitive to 560 nm light. But M cones are still stimulated quite a lot by 560 nm light—around 80% of maximum. This means you never (normally) get to experience having just o

Topics: color cones light red wavelengths

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Best Squat Racks of 2025

cnet.com See Full Bio 2025-07-20 15:35:00

Choose a squat rack that fits your needs: "Focus your time and energy researching those racks that fit perfectly into your space and for the height of the people who will be using the rack," said Steve Stonehouse, VP of education and programming at Body Fit Training. You'll also want to check the quality of the machine. "There is a different quality and standard for commercial racks as opposed to personal racks," he explains. When deciding on the quality of the rack, something to consider is the

Topics: rack racks squat use weight

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New CrushFTP zero-day exploited in attacks to hijack servers

bleepingcomputer.com Unknown 2025-07-20 14:24:29

CrushFTP is warning that threat actors are actively exploiting a zero-day vulnerability tracked as CVE-2025-54309, which allows attackers to gain administrative access via the web interface on vulnerable servers. CrushFTP is an enterprise file transfer server used by organizations to securely share and manage files over FTP, SFTP, HTTP/S, and other protocols. According to CrushFTP, threat actors were first detected exploiting the vulnerability on July 18th at 9AM CST, though it may have begun

Topics: crushftp default http prior vulnerability

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CrushFTP zero-day exploited in attacks to gain admin access on servers

bleepingcomputer.com Unknown 2025-07-21 00:24:29

CrushFTP is warning that threat actors are actively exploiting a zero-day vulnerability tracked as CVE-2025-54309, which allows attackers to gain administrative access via the web interface on vulnerable servers. CrushFTP is an enterprise file transfer server used by organizations to securely share and manage files over FTP, SFTP, HTTP/S, and other protocols. According to CrushFTP, threat actors were first detected exploiting the vulnerability on July 18th at 9AM CST, though it may have begun

Topics: crushftp default http prior vulnerability

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I absolutely love and recommend these 5 Android games to play with one hand

androidauthority.com Unknown 2025-07-23 00:00:06

Tushar Mehta / Android Authority Despite hundreds of thousands of games on the Play Store, very few become comforting escapes from the harsh reality. Games that you can play anywhere and without any special skillset, with one motive: feeling relaxed instead of getting all riled up. With this in mind, I have handpicked games that require no prior experience in mobile gaming and can be picked up immediately. They don’t need gaming chops and can be run on most Android phones or tablets. None of t

Topics: android game games mehta playing

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Einstein Showed That Time Is Relative. But … Why Is It?

wired.com Rhett Allain 2025-07-23 01:00:00

So, you’re driving a car at half the speed of light. (Both hands on the wheel, please.) You turn on the headlights. How fast would you see this light traveling? What about a person standing by the road? Would they see the light beam moving at 1.5 times the speed of light? But that’s impossible, right? Nothing is faster than light. Yes, it seems tricky. The problem is, our ideas about the world are based on our experiences, and we don’t have much experience going that fast. I mean, the speed of

Topics: car light speed time traveling

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GitHub abused to distribute payloads on behalf of malware-as-a-service

arstechnica.com Unknown 2025-07-23 08:16:09

Researchers from Cisco’s Talos security team have uncovered a malware-as-a-service operator that used public GitHub accounts as a channel for distributing an assortment of malicious software to targets. The use of GitHub gave the malware-as-a-service (MaaS) a reliable and easy-to-use platform that’s greenlit in many enterprise networks that rely on the code repository for the software they develop. GitHub removed the three accounts that hosted the malicious payloads shortly after being notified

Topics: emmenhtal github malicious malware talos

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Stone blocks from the Lighthouse of Alexandria recovered from seafloor

news.ycombinator.com Dario Radley 2025-07-19 18:51:06

After centuries underwater, 22 huge stone blocks of the ancient Lighthouse of Alexandria, one of the Seven Wonders of the Ancient World, have been recovered from the Mediterranean seabed, a breakthrough in an ambitious digital reconstruction effort. Restoration is part of the ongoing “PHAROS” project, led by archaeologist and architect Isabelle Hairy of France’s National Center for Scientific Research (CNRS), along with Egypt’s Centre d’Études Alexandrines (CEAlex) under the authority of Egypt’

Topics: alexandria blocks century documentary lighthouse

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Will AI end cheap flights? Critics attack Delta’s “predatory” AI pricing.

arstechnica.com Unknown 2025-07-24 08:01:26

Delta has become the first airline to announce that it is using AI to boost profits by personalizing pricing through a pilot program that for months has caused customers to pay different prices for the same flights based on their data profile. Critics have warned that this use of AI goes beyond airline practices that charge people who book flights ahead less than people who book flights at the last minute—and could ultimately mean the end of cheap flights across the board if other airlines foll

Topics: based customers delta flights pricing

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Apple submits bid for rights to MLB Sunday Night Baseball

9to5mac.com Chance Miller 2025-07-24 12:46:02

According to Major League Baseball Commissioner Rob Manfred, Apple is among the companies that have submitted a bid for the rights to the iconic Sunday Night Baseball broadcast, starting in 2026. In an interview with CNBC, Manfred said that Apple, NBC, and ESPN have all submitted bids for the Sunday Night Baseball package. In June, a report suggested that Apple was among the companies in the running to land streaming rights for this package. This week’s comments from Manfred mark the first tim

Topics: apple baseball espn night sunday

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Retro gaming YouTuber Once Were Nerd sued and raided by the Italian government

news.ycombinator.com Unknown 2025-07-24 18:17:08

TL;DR Retro gaming YouTuber Once Were Nerd has been sued and raided by the Italian government. Consoles were seized and channels may be closed for promoting piracy of copyrighted material. Some of these devices ship with pre-loaded ROMs, which appears to be the source of the complaint. While gaming content continues to grow and thrive on video platforms like Twitch and YouTube, copyright remains a sticky issue. Most companies look the other way when it comes to game streaming, but emulation i

Topics: anbernic copyright gaming italian law

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ESA’s Moonlight programme: Pioneering the path for lunar exploration (2024)

news.ycombinator.com Unknown 2025-07-22 02:01:44

Applications ESA's Moonlight programme: Pioneering the path for lunar exploration 15/10/2024 10144 views 62 likes Imagine a near future where services such as satellite navigation, video conferencing, and file sharing are as seamless on the Moon as they are on Earth. That’s the vision of ESA’s Moonlight programme, which aims to establish Europe’s first-ever dedicated satellite constellation for telecommunication and navigation services for the Moon. With over 400 planned lunar missions by spac

Topics: esa lunar moonlight navigation programme

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ESA's Moonlight programme: Pioneering the path for lunar exploration

news.ycombinator.com Unknown 2025-07-22 12:01:44

Applications ESA's Moonlight programme: Pioneering the path for lunar exploration 15/10/2024 10144 views 62 likes Imagine a near future where services such as satellite navigation, video conferencing, and file sharing are as seamless on the Moon as they are on Earth. That’s the vision of ESA’s Moonlight programme, which aims to establish Europe’s first-ever dedicated satellite constellation for telecommunication and navigation services for the Moon. With over 400 planned lunar missions by spac

Topics: esa lunar moonlight navigation programme

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Most Cats Sleep on Their Left Side, and Scientists Think They Know Why

gizmodo.com Gayoung Lee 2025-07-26 04:50:59

If you’re a cat owner, chances are you spend an unhealthy amount of time scrolling through your photo gallery, reviewing adorable photos of your cats for the thousandth time. While doing so, perhaps you’ve noticed that your cats appear to favor a certain side while sleeping. And if that happens to be the left side, new scientific research suggests you’re right. This could be a survival strategy for cats, according to a recent study published in Current Biology. In the paper, the researchers exp

Topics: cat cats left right sleeping

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Show HN: An MCP server that gives LLMs temporal awareness and time calculation

news.ycombinator.com Unknown 2025-07-26 09:55:31

"Passage of Time" Model Context Protocol (MCP) Server 🕐 An MCP server that gives language models temporal awareness and time calculation abilities. Teaching LLMs the significance of the passage of time through collaborative tool development. 📖 The Story This project emerged from a philosophical question: "Can AI perceive the passage of time?" What started as an exploration of machine consciousness became a practical solution to a real problem - LLMs can't reliably calculate time differences.

Topics: http human server sse time

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Forget copyright strikes, a retro gaming YouTuber faces possible jail time for reviewing gaming handhelds

androidauthority.com Unknown 2025-07-26 16:51:56

TL;DR Retro gaming YouTuber Once Were Nerd has been sued and raided by the Italian government. Consoles were seized and channels may be closed for promoting piracy of copyrighted material. Some of these devices ship with pre-loaded ROMs, which appears to be the source of the complaint. While gaming content continues to grow and thrive on video platforms like Twitch and YouTube, copyright remains a sticky issue. Most companies look the other way when it comes to game streaming, but emulation i

Topics: anbernic copyright gaming italian law

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Show HN: I gave Claude a sundial and it built a calendar

news.ycombinator.com Unknown 2025-07-26 19:55:31

"Passage of Time" Model Context Protocol (MCP) Server 🕐 An MCP server that gives language models temporal awareness and time calculation abilities. Teaching LLMs the significance of the passage of time through collaborative tool development. 📖 The Story This project emerged from a philosophical question: "Can AI perceive the passage of time?" What started as an exploration of machine consciousness became a practical solution to a real problem - LLMs can't reliably calculate time differences.

Topics: http human server sse time

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Want full lighting control? These panels let you customize each edge separately

androidauthority.com Unknown 2025-07-27 17:16:53

Edgar Cervantes / Android Authority Have you seen those cool-shaped lights adorning gamer and YouTuber walls? They are pretty cool, and if you’ve been looking to add a unique look to your own walls with something similar, the Linkind EP6 Smart Hexagon Panels might be just what you’re looking for. These will look amazing and add some really cool functionality you would otherwise only find in very expensive setups. Let’s tell you all about them! What are the Linkind EP6 Smart Hexagon Panels all

Topics: hexagon light linkind panels smart

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No silent night in sight? These sleep earbuds help me fall asleep in my noisy bedroom

zdnet.com Nina Raemont 2025-07-27 14:35:16

ZDNET's key takeaways The Ozlo Sleepbuds, created by three Bose engineers, launched last fall, and they are the most useful sleep earbuds I've tested so far The sound is perfect for masking environmental annoyances that keep you awake, and the fit is comfortable and secure. The sleep tracking feature hasn't hit the earbuds yet, and setup took a few tries and several glitches, but once these work in your ears, they get you to bed instantly. View now at Ozlo View now at Amazon more buying choice

Topics: earbuds night ozlo sleep sleepbuds

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What Was Cyberpunk? In Memoriam: 1980-2020 (2020)

news.ycombinator.com Unknown 2025-07-25 05:59:42

To wrap up our look at print sci-fi I am going to compare and contrast two books released in 2020 that both have much in common with Mirrorshades, but in very different ways:, Gibson’s (“””the father of cyberpunk”””) Agency and Miciah Johnson’s debut novel “The Space Between Worlds”. I am going to be a little mean to Gibson, but hopefully by the time you’ve read both summaries you’ll understand why. This section has also put me in the unfortunate position of trying to summarize these books so yo

Topics: com facebook https img url

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What Was Cyberpunk? In Memoriam: 1980-2020

news.ycombinator.com Unknown 2025-07-25 10:59:42

To wrap up our look at print sci-fi I am going to compare and contrast two books released in 2020 that both have much in common with Mirrorshades, but in very different ways:, Gibson’s (“””the father of cyberpunk”””) Agency and Miciah Johnson’s debut novel “The Space Between Worlds”. I am going to be a little mean to Gibson, but hopefully by the time you’ve read both summaries you’ll understand why. This section has also put me in the unfortunate position of trying to summarize these books so yo

Topics: com facebook https img url

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The Skylight Calendar is perfect for busy families, and easy enough for kids to use

zdnet.com Maria Diaz 2025-07-28 08:52:20

ZDNET's key takeaways The 15-inch Skylight Calendar is a smart display for $320, with a 10-inch version available for $160. It's a touchscreen calendar designed with busy lifestyles in mind that allows for shared use within a household or team. Though it's proven indispensable for my family, I wish the chores, not just the events, were visible in the calendar view, and the 15-inch version is expensive at $320. $319.99 at Amazon Getting organized is a never-ending battle for me. As a self-proc

Topics: calendar events like new skylight

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Finally, a battery floodlight camera that's perfect for my dark yard

zdnet.com Maria Diaz 2025-07-29 12:51:36

ZDNET's key takeaways The Blink Outdoor 4 Floodlight Camera is a practical, battery-powered solution for darker areas around your house that lack wiring and outlets. The AA batteries allow the floodlights to beam at 700 nits of brightness, which is not the most powerful on the market but good enough to see your surroundings. The Blink app is feature-rich, with plenty of camera settings to customize for the best surveillance, but you'll need a paid subscription to unlock the best features. View

Topics: blink camera floodlight outdoor plan

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Gemini is working to clean up how it handles Canvas previews (APK teardown)

androidauthority.com Unknown 2025-07-29 23:30:10

Edgar Cervantes / Android Authority TL;DR Google introduced Canvas in Gemini to aid with creating documents and editing code. So far, previewing code output in Gemini may involve transitioning over to a new Chrome tab. Gemini appears to be experimenting with a revised preview path that allows you to remain right in the Gemini app. Google has been making its case for Gemini going back well over a year at this point, and with all the new tools and upgrades its AI agent has received, at this po

Topics: authority canvas code gemini right

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Clashes between web and X11 colors in the CSS color scheme

news.ycombinator.com Unknown 2025-07-28 18:32:46

In computing, on the X Window System, X11 color names are represented in a simple text file, which maps certain strings to RGB color values. It was traditionally shipped with every X11 installation, hence the name, and is usually located in <X11root>/lib/X11/rgb.txt . The web colors list is descended from it but differs for certain color names.[1] Color names are not standardized by Xlib or the X11 protocol. The list does not show continuity either in selected color values or in color names, an

Topics: 100 50 dark green light

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Pebblebee tracker’s new SOS alert reminds us that updates can be good for gadgets

arstechnica.com Unknown 2025-07-30 11:54:39

Pebblebee is adding a free, helpful feature to already-purchased devices. Today, it announced that its Clip Universal Bluetooth trackers, which are compatible with iOS and Android devices, are being updated to include an Alert feature that sets off a siren and strobing light when a user wants help. Pebblebee started selling Android trackers in May 2024 in three different form factors: an AirTag-like Clip version, a credit card-shaped Card SKU, and the smallest version, Tag. In October 2024, Pe

Topics: alert clip devices light pebblebee

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OpenAI Hits Pause on Its Meta Killer

gizmodo.com Luc Olinga 2025-07-30 16:23:21

OpenAI is delaying the release of its much-anticipated open-weight AI model, citing the need for “additional safety tests” and last-minute concerns over “high-risk areas,” CEO Sam Altman announced on X (formerly Twitter). The decision lands in the middle of a brutal AI arms race, particularly with Meta, which has been aggressively poaching OpenAI talent and championing open-source models like Llama 3. The model, which was slated to drop this week, would be OpenAI’s first major open-weight syste

Topics: ai model open openai weight

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Bluetooth tracker Pebblebee adds free SOS alarm to already-purchased devices

arstechnica.com Unknown 2025-07-30 16:54:39

Pebblebee is adding a free, helpful feature to already-purchased devices. Today, it announced that its Clip Universal Bluetooth trackers, which are compatible with iOS and Android devices, are being updated to include an Alert feature that sets off a siren and strobing light when a user wants help. Pebblebee started selling Android trackers in May 2024 in three different form factors: an AirTag-like Clip version, a credit card-shaped Card SKU, and the smallest version, Tag. In October 2024, Pe

Topics: alert clip devices light pebblebee

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This is the most customizable smart home accessory and it's on sale

zdnet.com Maria Diaz 2025-07-30 20:42:00

ZDNET's key takeaways The Govee Neon Rope Light 2 is available in white or black and in two lengths: 10 feet and 16.4 feet. More pliable than other neon light strips on the market, the Govee Neon Rope Light 2 is easy to install and comes with bend clips to facilitate getting closed angles. The light strip doesn't have a template guide for setup It's also too bright to use as a night light, even at 1% brightness, but that's a highly personal preference. View now at Amazon The Govee Neon Rope

Topics: govee light neon rope strip

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Lightning Detector Circuits

news.ycombinator.com Unknown 2025-07-31 12:07:31

Here's a version I built into a "fake" book I found at an art store. The copper PCB is connected to the circuit ground to act as a counterpoise for the antenna, increasing sensitivity. The lightning bolt was cut with a sharp knife then filled with blue-dyed epoxy. The antenna connects to the pin jack. I used a cheap flashlight head for the LED - I used too much blue dye in the epoxy so I need a bright flash! The image below is with an LED and no pot (but with the 150k resistor added). I made se

Topics: just lightning power resistor transistor

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Latest Tech News

New colors without shooting lasers into your eyes

Best Squat Racks of 2025

New CrushFTP zero-day exploited in attacks to hijack servers

CrushFTP zero-day exploited in attacks to gain admin access on servers

I absolutely love and recommend these 5 Android games to play with one hand

Einstein Showed That Time Is Relative. But … Why Is It?

GitHub abused to distribute payloads on behalf of malware-as-a-service

Stone blocks from the Lighthouse of Alexandria recovered from seafloor

Will AI end cheap flights? Critics attack Delta’s “predatory” AI pricing.

Apple submits bid for rights to MLB Sunday Night Baseball

Retro gaming YouTuber Once Were Nerd sued and raided by the Italian government

ESA’s Moonlight programme: Pioneering the path for lunar exploration (2024)

ESA's Moonlight programme: Pioneering the path for lunar exploration

Most Cats Sleep on Their Left Side, and Scientists Think They Know Why

Show HN: An MCP server that gives LLMs temporal awareness and time calculation

Forget copyright strikes, a retro gaming YouTuber faces possible jail time for reviewing gaming handhelds

Show HN: I gave Claude a sundial and it built a calendar

Want full lighting control? These panels let you customize each edge separately

No silent night in sight? These sleep earbuds help me fall asleep in my noisy bedroom

What Was Cyberpunk? In Memoriam: 1980-2020 (2020)

What Was Cyberpunk? In Memoriam: 1980-2020

The Skylight Calendar is perfect for busy families, and easy enough for kids to use

Finally, a battery floodlight camera that's perfect for my dark yard

Gemini is working to clean up how it handles Canvas previews (APK teardown)

Clashes between web and X11 colors in the CSS color scheme

Pebblebee tracker’s new SOS alert reminds us that updates can be good for gadgets

OpenAI Hits Pause on Its Meta Killer

Bluetooth tracker Pebblebee adds free SOS alarm to already-purchased devices

This is the most customizable smart home accessory and it's on sale

Lightning Detector Circuits

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