What's new arround internet
| Src | Date (GMT) | Titre | Description | Tags | Stories | Notes |
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2021-04-13 12:00:00 | The Most Surprising Gaming Upgrade I\'ve Made? Surround Sound (lien direct) | New mouse? New monitor? New keyboard? Maybe consider some new speakers, instead. | |||
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2021-04-13 12:00:00 | How Many Homes Could You Power With Free Doughnuts? (lien direct) | Should you get a COVID vaccine? Yes, it will protect you AND protect others to help us move past this pandemic so we can get back to a more normal life. But wait! If you get vaccinated, you can also get a doughnut! At least that's the deal that Krispy Kreme Doughnuts is offering. Once you get your vaccine, you get a doughnut. Oh, it's not just one doughnut—it's one doughnut every day. That's a lot of doughnuts. OK, so how about some physics estimations to go along with your tasty doughnut? Let's say that all the Americans that have a COVID vaccine get (and eat) one doughnut a day. Of course eating food gives you energy to do stuff—that's how food works. So, suppose that all these humans eat their doughnut and then use the extra energy to peddle a stationary bike. All of these bikes are then connected to generators so that they feed into the power grid. What kind of power output would this produce? The first thing we need is the number of doughnuts a day. According to the Center for Disease Control (CDC) 63 million Americans have been fully vaccinated so far (as of April 7 2021). Oh, don't worry too much about the numbers—I'm going to do all my calculations in python so that you can change the values if that makes you happy. I'm also going to assume that all these people get their doughnut—every day. Next, I need to know the amount of energy per doughnut. According to Krispy Kreme's site, a plain glazed doughnut is 190 Calories. But what the heck is a Calorie? Well, [the original calorie was created to describe changes in thermal energy for different substance](https://en.wikipedia.org/wiki/Calories. Then, later people used it to measure the amount of chemical energy your body can get from eating food. However, there is a problem. For some reason, all food labels list stuff in Calories—but these are really kilocalories. So, that doughnut has 190,000 calories. I guess it just sounds like it's too big of a number for people to consider eating. There is another unit of energy—the joule. Since this is the preferred unit of energy for physicists, I'm going to use it. To convert between units, 1 calorie is equal to 4.184 joules. But what does this have to do with your everyday life? Let's consider something you might do without too much effort. Suppose you have a textbook on the floor and you pick it up to put it on a table. Since you are exerting a force on the book over some distance, you have to change the gravitational potential energy of that book. The change in gravitational potential energy is equal to the mass of the book (about 1 kilogram) multiplied by the local gravitational field (g = 9.8 N/kg) and then multiplied by the change in height (about 1 meter). This will give a change in energy of about 10 joules. So that gives you a rough feeling for the amount of energy in a joule. But what about power? Power is the rate of energy change. It tells you how fast you use energy. As an equation, it looks like this: defpower In this expression, if ΔE is the change in energy in units of joules and Δt is the time interval in seconds then the power will be in units of watts. We are almost ready to calculate the vaccine doughnut power. We just need one more estimation—the efficiency. When a human eats a doughnut, only some of the chemical energy goes all the way into useful energy. Also, with a stationary bike generator some of the energy the human uses to push the pedals also goes into heating up some of the moving parts. In the end, only a percentage of the energy goes into electrical energy. This percentage is the efficiency. I'm just going to make a rough guess that the process of doughnut eating to electrical energy is 25 percent efficient. That's it. I just need to take the number of doughnuts per day and convert that energy to joules and then divide by the length of a day (in seconds). Oh, and multiply by the efficiency. Here's what I get. Note: t | |||
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2021-04-13 11:00:00 | AI Comes to Car Repair, and Body Shop Owners Aren\'t Happy (lien direct) | During the pandemic, insurers accelerated the use of automated tools to estimate repair costs. Garage operators say the numbers can be wildly inaccurate. | |||
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2021-04-13 11:00:00 | Plastic Is Falling From the Sky. But Where\'s It Coming From? (lien direct) | At any given time, 1,100 tons of microplastic are floating over the western US. New modeling shows the surprising sources of the nefarious pollutant. | |||
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2021-04-13 11:00:00 | The OnePlus Watch Is Buggy-and That\'s Not the Worst of It (lien direct) | Inconsistent tracking is just about the worst problem for a fitness tracker. Here, that issue is compounded by myriad other bugs. | |||
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2021-04-13 11:00:00 | Here\'s What It Takes to Fly a Drone on Mount Everest (lien direct) | If you're heading to the top of the iconic mountain to look for a dead man and a 100-year-old camera, you want to start by running some tests on your device. | |||
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2021-04-13 04:01:00 | 100M More IoT Devices Are Exposed-and They Won\'t Be the Last (lien direct) | The Name:Wreck flaws in TCP/IP are the latest in a series of vulnerabilities with global implications. | |||
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2021-04-12 17:00:00 | BMW\'s Virtual Factory Uses AI to Hone the Assembly Line (lien direct) | The German automaker uses new software from chipmaker Nvidia to simulate train robots and human workers. | |||
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2021-04-12 12:00:00 | Scary Video Games Help Me Cope With My Fears About Reality (lien direct) | From jump scares to terrifying monsters, games like Amnesia and Little Nightmares prepare me to handle a world filled with anxiety triggers. | |||
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2021-04-12 12:00:00 | Vizio\'s M-Series Quantum Is Our Favorite TV for Under $500 (lien direct) | The gorgeous quantum dot display makes Vizio's M-Series the best cheap TV you'll find. | |||
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2021-04-12 11:00:00 | Pandemic Lockdowns Did Cut Air Pollution-but With a Catch (lien direct) | Studies from all over the globe show short-term improvements in urban air quality, but experts are skeptical about how long they'll last. | Studies | ||
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2021-04-12 11:00:00 | Antitrust and Privacy Are on a Collision Course (lien direct) | Facebook is being sued for weakening data protections. Google is being sued for strengthening them. Can that paradox be resolved? | |||
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2021-04-12 11:00:00 | TikTok Duets Are Reviving the Exquisite Corpse (lien direct) | Dances, duets, and other challenges differ greatly from the work of the Surrealists. But that doesn't mean they're not creating a new art form all their own. | |||
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2021-04-12 11:00:00 | This AI Could Help Wipe Out Colon Cancer (lien direct) | Medtronic's GI Genius, awaiting clearance from the FDA, will help doctors identify precancerous polyps. | |||
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2021-04-11 13:00:00 | New Vaccine Conspiracy Theories Are Going Viral in Arabic (lien direct) | Facebook has been criticized for failing to curb misinformation in English. But little attention has been paid to the scale of the problem in Arabic. | |||
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2021-04-11 12:00:00 | A \'Last Hope\' Experiment Finds Evidence for Unknown Particles (lien direct) | Long-awaited news from Fermilab's Muon g-2 team may resolve a tantalizing conflict between nature and theory. But a separate calculation clouds the picture. | |||
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2021-04-11 12:00:00 | What\'s Making You So Gassy? This Gadget Aims to Find Out (lien direct) | The FoodMarble measures the level of hydrogen in your breath, which can tell you which foods are causing your digestion woes. | |||
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2021-04-11 11:00:00 | How to Log In to Your Devices Without Passwords (lien direct) | You can use your face, fingerprint, or a wearable to get access to your gadgets. It saves you some typing-and makes you feel like a spy. | |||
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2021-04-11 11:00:00 | How to Layer Clothes for Your Next Outdoor Adventure (lien direct) | Whether you're hiking, climbing, or backpacking, here's how to build a layering system that can handle all that Mother Nature will throw at you. | |||
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2021-04-10 13:22:07 | Oh Look, LinkedIn Also Has a 500M User Data Leak (lien direct) | Plus: A bad Zoom bug, a billion-dollar cocaine bust, and more of the week's top security news. | |||
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2021-04-10 12:00:00 | The Best Controllers for \'Microsoft Flight Simulator\' (lien direct) | We may all still be trapped at home for a while, but we can at least take flight. Virtually, that is. | |||
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2021-04-10 12:00:00 | In Europe, Backlash Heats Up Over Garbage Incinerators (lien direct) | Trash-burning facilities once seemed like a useful way to minimize pollution and generate power. But the EU is withdrawing support over emissions concerns. | |||
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2021-04-10 11:00:00 | The 17 Best Weekend Deals on Stand Mixers, PC Gear, and More (lien direct) | Springtime is here, and so are some surprisingly good deals on kitchen appliances and computer components. | |||
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2021-04-10 11:00:00 | Outriders Is Grinning Through the Apocalypse (lien direct) | The game bounces wildly between violence and wry humor, with some dark and harrowing commentary. And it's certainly worth your time. | ★★★ | ||
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2021-04-10 00:15:05 | Facebook Had Years to Fix Flaw That Leaked 500M Users\' Data (lien direct) | Software makers can't catch every bug every time, but Facebook had ample warning about the privacy problems with its “contact import” feature. | |||
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2021-04-09 22:38:52 | Extremist Charged With Plot to Blow Up Amazon Data Centers (lien direct) | The FBI arrested the suspect in Texas after he purchased explosives from an undercover agent. | |||
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2021-04-09 18:00:43 | (Déjà vu) Tracking Variants, New Hot Spots, and More Coronavirus News (lien direct) | Catch up on the most important updates from this week. | |||
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2021-04-09 16:00:00 | What Sci-Fi Can Teach You About Running a Business (lien direct) | Entrepreneur James Altucher has used everything from Star Wars to Isaac Asimov's Foundation series in his work. | ★★ | ||
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2021-04-09 15:50:59 | Despite Union Setback, Amazon Workers Fight for Dignity (lien direct) | Union supporters face a setback in Bessemer, Alabama, but indicate the fight isn't over yet. | ★★★★★ | ||
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2021-04-09 13:00:00 | This Ebike Is a Fun Ride-Until the Glitches Start (lien direct) | This powerful electric bike has super build quality, but I didn't have a super time with it. | |||
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2021-04-09 13:00:00 | The Thrusters Behind NASA\'s Mission to the Asteroid Psyche (lien direct) | Hall thrusters have been used in satellites for years. Now, they'll play a crucial role in reaching a metallic asteroid called Psyche. | |||
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2021-04-09 13:00:00 | The Clones Are Coming for Clubhouse (lien direct) | Plus: MySpace's downfall, tech competition from China, and the particle going rogue. | |||
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2021-04-09 13:00:00 | Break Reality and Keep Marvel Weird (lien direct) | The new trailer for Loki is a promise that the Disney+ streak will continue. | ★★ | ||
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2021-04-09 12:00:00 | Game Subscriptions Open Doors for Players With Disabilities (lien direct) | Services like Xbox Game Pass and PlayStation Now allow users to easily see if a new title is accessible without having to buy it first. | |||
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2021-04-09 12:00:00 | How Tech Transformed How We Hook Up-and Break Up (lien direct) | This week, we look at how living online makes it harder to forget a love that's been lost and easier to find love once again. | |||
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2021-04-09 11:00:00 | Variant Hunters Race to Find New Strains Where Testing Lags (lien direct) | In countries without much sequencing, new versions of the Covid virus can go unnoticed. Scientists across Africa are collaborating to track them down. | |||
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2021-04-09 11:00:00 | How to Survive a Killer Asteroid (lien direct) | The impact that wiped out the dinosaurs would probably have killed you too-unless you were in the exact right place and had made the exact right plans. | |||
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2021-04-08 13:00:00 | Russia May Have Found a New Way to Censor the Internet (lien direct) | In an attempt to silence Twitter, the Kremlin appears to have developed novel techniques to restrict online content. | |||
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2021-04-08 13:00:00 | How to Customize Your PS5\'s Home Screen (lien direct) | There aren't a ton of options yet (they're probably on the way). But even though the features are limited, they can definitely save you time. | |||
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2021-04-08 13:00:00 | My Dream of the Great Unbundling (lien direct) | We don't need the next big thing. We need countless next little things. | |||
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2021-04-08 12:00:00 | The 5 Best Portable Espresso Makers for a Shot on the Go (lien direct) | Make a barista-worthy cup on the road, or anywhere else, with these handheld machines. | APT 22 | ||
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2021-04-08 12:00:00 | This Wobbly Robot Wants to Be Your Pet\'s New Playmate (lien direct) | This robotic toy promises to keep your pets entertained while you're busy. | |||
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2021-04-08 11:00:00 | This Sticker Absorbs Sweat-and Might Diagnose Cystic Fibrosis (lien direct) | The device may make it easier to quickly test newborns and could open the door to at-home monitoring. | |||
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2021-04-08 11:00:00 | How to Manage Your Mess of Cables, Once and for All (lien direct) | You don't have to suffer with tangled cords behind your TV or under your desk, even if you're committed to the wired life. Here's how to tidy up. | ★★ | ||
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2021-04-07 17:16:24 | Twitch Will Act on \'Serious\' Offenses That Happen Off-Stream (lien direct) | The new policy holds streamers to account for what happens on other services and in real life. | |||
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2021-04-07 13:00:00 | How Strong Is King Kong? And Could He Even Stand Up? (lien direct) | In physics, big things are not like small things. Here's what that means for a giant gorilla. | |||
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2021-04-07 13:00:00 | Help! My Colleague Is Taking Credit for My Work (lien direct) | Why petty drama matters in the workplace, and other advice on office thievery. | |||
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2021-04-07 13:00:00 | It\'s Hard to Play a Character Who\'s a Dick-but It\'s Worth It (lien direct) | In God of War, Kratos is kind of mean, but finishing his journey has its rewards. | ★★★ | ||
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2021-04-07 13:00:00 | This $2,500 Iron Is a Badass Wrinkle Destroyer (lien direct) | The Laurastar Smart U works so well it may give you a flashback to the smoothest sheets you've ever slept on. | ★★★★ | ||
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2021-04-07 12:00:00 | This Curtain-Opening Robot Isn\'t As Convenient As You Think (lien direct) | Wake up to natural sunlight and a loud, whining noise thanks to the wonky SwitchBot that opens and closes your drapes for you. |
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