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first_img Recently updated to include digital-photo-frame capabilities, the Lenovo Smart Clock brings Google Assistant goodness to your nightstand. It’s a little smaller than the Amazon Echo Show 5, but also a full $30 less (and tied with Prime Day pricing) during this Best Buy Labor Day sale. Apple AirPods with Wireless Charging Case: $155 (save $45) Rylo Best Buy Post a comment $90 at Daily Steals via Google Express 0 See it $6 at Tidal Boost Mobile $999 Angela Lang/CNET See It Lenovo Smart Clock: $59.99 (save $20) Review • iPhone XS review, updated: A few luxury upgrades over the XR Comments I thought this might be a mistake, but, no, the weirdly named HP Laptop 15t Value is indeed quite the value at this price. Specs include an Intel Core i7 processor, 12GB of RAM, a 256GB solid-state drive and a 15.6-inch display. However, I strongly recommend paying an extra $50 to upgrade that display to FHD (1,920×1,080), because you’re not likely to be happy with the native 1,366×768 resolution. DJI Osmo Action camera: $261 (save $89) Other Labor Day sales you should check out Best Buy: In addition to some pretty solid MacBook deals that have been running for about a week already, Best Buy is offering up to 40% off major appliances like washers, dryers and stoves. There are also gift cards available with the purchase of select appliances. See it at Best BuyDell: Through Aug. 28, Dell is offering an extra 12% off various laptops, desktops and electronics. And check back starting Aug. 29 for a big batch of Labor Day doorbusters. See it at DellGlassesUSA: Aug. 29 – Sept. 3 only, you can save 65% on all frames with promo code labor65. See it at GlassesUSALenovo: The tech company is offering a large assortment of deals and doorbusters through Labor Day, with the promise of up to 56% off certain items — including, at this writing, the IdeaPad 730S laptop for $700 (save $300).See it at LenovoLensabl: Want to keep the frames you already love and paid for? Lensabl lets you mail them in for new lenses, based on your prescription. From now through Sept. 2 only, you can save 20% on the blue light-blocking lens option with promo code BLOCKBLUE. See it at LensablSears: Between now and Sept. 7, you can save up to 40% on appliances (plus an additional 10% if you shop online), up to 60% on mattresses, up to 50% on Craftsman products and more. The store is also offering some fairly hefty cashback bonuses. See it at SearsNote: This post was published previously and is continuously updated with new information.CNET’s Cheapskate scours the web for great deals on tech products and much more. For the latest deals and updates, follow the Cheapskate on Facebook and Twitter. Questions about the Cheapskate blog? Find the answers on our FAQ page, and find more great buys on the CNET Deals page. $999 See It See at Amazon Tidal 3-month family subscription: $5.99 (save $54) JBL Soundgear wearable speaker: $90 (save $160) Read DJI Osmo Action preview Lenovo 130-15AST 15.6-inch laptop: $210 (save $90) What’s cooler: A snapshot of a firework exploding in front of you, or full 360-degree video of all the fireworks and all the reactions to seeing them? Oooh, ahhh, indeed. At $250, the compact Rylo dual-lens camera is selling for its lowest price yet. And for an extra $50, you can get the bundle that includes the waterproof housing.This deal runs through Sept. 3; it usually costs $500. Google Nest Hub: $59 (save $70) Formerly known as the Google Home Hub, Google’s Nest Hub packs a wealth of Google Assistant goodness into a 7-inch screen. At $59, this is within a buck of the best price we’ve seen. It lists for $129 and sells elsewhere in the $89-to-$99 range.This is one item of many available as part of eBay’s Labor Day Sale (which, at this writing, doesn’t specifically mention Labor Day, but that’s how it was pitched to us). Turo: Save $30 on any car rental CNET may get a commission from retail offers. Rylo 5.8K 360 Video Camera: $250 (save $250) Though not technically a Labor Day sale, it’s happening during Labor Day sale season — and it’s too good not to share. Nationwide Distributors, via Google Express, has just about the best AirPods deal we’ve seen (when you apply promo code ZBEDWZ at checkout). This is for the second-gen AirPods with the wireless charging case. Can’t imagine these will last long at this price, so if you’re interested, act fast. Use promo code 19LABOR10 to get an unusually good deal on JBL’s interesting hybrid product — not quite headphones, and not quite a traditional speaker, but something you wear like neckphones to listen to music on the go. LeVar Burton appears in Weird City. Screenshot/CNET A dystopian future could be in the not-too-distant-future. At least, that’s part of the premise of Jordan Peele and writer Charlie Sanders’ upcoming satirical anthology show, Weird City. The trailer dropped Wednesday, giving us a look at a world where the middle class ceases to exist. TVs Speakers Mobile Accessories Cameras Laptops Automobiles Smart Speakers & Displays 7 $210 at Best Buy $59 at eBay Spotify and most other streaming services rely on compressed audio, which robs the listener of full fidelity. Enter Tidal, the only “major” service that delivers lossless audio — meaning at least on par with CD quality, if not better. Want to see (er, hear) the difference for yourself? Grab this excellent extended trial while you can. It’s just $6 for three months, and it’s good for up to six listeners.center_img DJI’s answer to GoPro’s action cameras is rugged little model that’s shockproof, dustproof and waterproof down to 11 meters. It normally runs $350, but this deal drops it to $261 when you apply promo code 19LABOR10 at checkout. Sarah Tew/CNET $999 $261 at Daily Steals via Google Express Share your voice The Cheapskate The problem with most entry-level laptops: They come with mechanical hard drives. That makes for a mighty slow Windows experience. This Lenovo model features a 128GB solid-state drive, so it should be pretty quick to boot and load software, even with its basic processor. Plus, it has a DVD-burner! That’s not something you see in many modern laptops, especially at this price. $299 at Amazon Read the Rylo camera preview $520 at HP Apple iPhone XS $155 at Google Express Preview • iPhone XS is the new $1,000 iPhone X HP Laptop 15t Value: $520 (save $780) Mentioned Above Apple iPhone XS (64GB, space gray) An Echo Dot makes a fine match for any Fire edition TV, because you can use the latter to say things like, “Alexa, turn on the TV.” Right now, the 24-inch Insignia Fire TV Edition starts at just $100, while the 32-inch Toshiba Fire TV Editions is on sale for $130. Just add any Fire TV Edition to your cart, then add a third-gen Echo Dot, and presto: The latter is free. Free Echo Dot with an Insignia or Toshiba TV (save $50) $999 Sarah Tew/CNET Read Google Home Hub review “Each episode is a topic that pertains to present day life in America and the world: social media addiction, online dating, fitness obsession, etc,” according to the description on YouTube. The cast includes LeVar Burton, Mark Hamill, Michael Cera, Rosario Dawson and Awkwafina, to name a few.Weird City is slated for 2019 and will be available with YouTube Premium.Peele is also working on the upcoming reboot of The Twilight Zone, and his movie Us premieres in March.  Chris Monroe/CNET Turo Sarah Tew/CNET See at Turo Sprint Read the AirPods review Tags Turo is kind of like Uber meets Airbnb: You borrow someone’s car, but you do all the driving. I’ve used it many times and found it a great alternative to traditional car-rental services — in part because you get to choose exactly the vehicle you want (not just, say, “midsize”) and in part because you can often do pickup and dropoff right outside baggage claim.Between now and Sept. 1, the first 300 people to check out can get $30 off any Turo rental with promo code LDW30. Read Lenovo Smart Clock review Culture,I’m shocked — shocked! — to learn that stores are turning Labor Day into an excuse to sell stuff. Wait — no, I’m not. As much as I respect the original intent of the holiday (which became official back in 1894), to most of us, it’s just a bonus day off — one that’s blissfully tacked onto a weekend. So, yeah, stores; go ahead, run your sales. I’m listening. Perhaps unsurprisingly, Labor Day doesn’t bring out bargains to compete with the likes of Black Friday (which will be here before you know it), but there are definitely some sales worth your time.For example:We’ve rounded up the best Labor Day mattress deals.We’ve also gathered the best Labor Day laptop deals at Best Buy.The 2019 Vizio P Series Quantum is back under $999.Be sure to check out Amazon’s roughly three dozen Labor Day deals on TVs and audio. Google Express is having a big sale as well, one that includes deals on game consoles, AirPods, iPhones, laptops and more.Below I’ve rounded up a handful of individual items I consider to be the cream of the crop, followed by a handy reference guide to other Labor Day sales. Keep in mind, of course, that products may sell out at any time, even if the sale itself is still running. Note that CNET may get a share of revenue from the sale of the products featured on this page. Share your voice Tags $60 at Best Buy Best laptops for college students: We’ve got an affordable laptop for every student. Best live TV streaming services: Ditch your cable company but keep the live channels and DVR. Amazon See It Sarah Tew/CNETlast_img read more

first_imgPolymer laser. Image credit: Organic Semiconductor Optoelectronics / University of St Andrews This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. (PhysOrg.com) — Detecting hidden explosives is a difficult task but now researchers in the UK have developed a completely new way of detecting them, with a laser sensor capable of detecting molecules of explosives at concentrations of 10 parts per billion (ppb) or less. © 2010 PhysOrg.com New method for detecting explosives More information: Ying Yang et al., Sensitive Explosive Vapor Detection with Polyfluorene Lasers, Advanced Functional Materials, Published Online: 25 May 2010. DOI:10.1002/adfm.200901904 Explore further The laser sensor, developed by physicists from the University of St Andrews in Fife, Scotland, relies on the fact that when a type of plastic called polyfluorene is “pumped” with photons of light from a light source it emits laser light. When molecules of the vapors emitted by explosives such as TNT are present, they interfere with the laser light, switching off the emission, and the interference can be measured.One of the scientists, Dr. Graham Turnbull, explained that there is a dilute, weak cloud of vapors of nitroaromatic-based explosive molecules above an explosive device. He said the laser could be thought of as an “artificial nose for a robot dog.”In the study a plastic laser was exposed to 1,4-dinitribenzene (DNB) vapors at 9.8 ppb concentration. The light emitted by the laser decreased rapidly, allowing for detection within seconds of the exposure. After 4-5 minutes the response had slowed and then flattened off, which the researchers suggest is due to the vapor molecules interacting with the surface of the polyfluorene. The laser took three and a half hours to recover in air, but only three minutes if nitrogen gas was flushed through it and 20 seconds if purged under a vacuum.The plastic polyfluorene is a cheap material, which is an obvious advantage for a device designed to detect explosives. Dr. Turnbull said that while similar techniques using organic semiconductor lasers had been looked at before, this is the first time scientists have used a polyfluorene laser, and its use enables much lower concentrations of vapors to be detected. Organic semiconductor lasers detect explosive vapors because of a chemical interaction between the vapor and the semiconductor in which electrons are transferred from the semiconductor to the electron-deficient vapor molecules. It is this transfer of electrons that reduces the light emitted by the laser. The same electron-transfer effect occurs with the new polyfluorene laser.The drawback with the laser sensors is that the explosives must be in the very near vicinity, which limits its use for humans, but they could prove extremely useful for applications such as roadside bomb detection in Iraq and Afghanistan, for security checkpoints, luggage screening in airports, and for bomb disposal robots generally. The system could also be used in conjunction with remotely controlled robots for detecting land mines, which are still a danger to people in areas such as Southeast Asia.The findings were published in the journal Advanced Functional Materials. Citation: Plastic laser detects tiny amounts of explosives (2010, June 8) retrieved 18 August 2019 from https://phys.org/news/2010-06-plastic-laser-tiny-amounts-explosives.htmllast_img read more

first_img This hands-on workshop will give you the tools to authentically connect with an increasingly skeptical online audience. Thanks to next-generation mobile broadband services, more business data are moving faster in more places than ever.Except perhaps one: The wireless network in your shop.Chances are good that your wireless network is probably still plugged into a traditional cable modem, phone-company DSL line or, if yours is a bigger business, a broadband digital data option.CradlePoint Wireless 3G/4G RouterBut one start-up, CradlePoint, is offering cellular-company-provided data access in a fixed office. The Boise, Idaho-based company has developed a line of 4G/3G office routers that connect to Verizon’s LTE super-fast cellular-data network, as well as networks from the other big carriers, including Sprint and AT&T, and others such as Cricket and Comcast.CradlePoint’s 4G/3G routers cleverly allow several users to share a single cell Web data account. We’ve been testing CradlePoint’s MBR95, a wireless 4G/3G router, to get a sense of what this all-for-one, one-for-all wireless-data approach can — and can’t — do for office wireless networks.We found that, although it’s unlikely users will want to ditch their cable Internet altogether, adding cellular capability to an office network can offer attractive benefits the small-business owner.What You GetCradlePoint’s 4G routers offer what the company calls “always on” Internet. CradlePoint devices such as the MBR95, which retails at about $120, connect both a user’s cellular modem and, if configured, traditional access options like a cable modem.This way, the cellular network isn’t so much an all-in-one data solution, but a reliable backup. In other words, if the cable Internet goes out, the cellular data network kicks in so that users won’t have to wait for tech support to fix the problem before getting on with business.For Ken Hosac, CradlePoint’s director of product management, “always on” Internet is the company’s killer app, especially as more business activities are done in the cloud.”If you’re starting your own business, you’re not likely to go out and get large exchange server like in the old days. You’re probably going to get a subscription to Google apps,” he says. “Everything you use for your business, such as email, applications, is up in the cloud. So that network connection is even more important now.”What you might like: Users will like being able to share across-the-board access to 4G networks like Verizon’s. When it’s available, it’s just plain fast. The MBR95 we tested allows for 32 different wireless connections, and some of CradlePoint’s higher-end enterprise products allow for more than 100. CradlePoint supports a hefty number of modems and data carriers and its MBR95 supports 100-plus different devices and several dozen carriers.We found the set-up largely foolproof: Boot up the modem, connect the router and then create your wireless network through an easy-to-use, first-time set-up tool. Web access fired right up. Expect to spend less than half an hour creating both a private wireless network and a public guest network, which blocks off access to administrative features. That is not bad.Set up was so easy, you could take this unit with you when you travel.What you might not like: You are on your own when it comes to paying for — and managing — data use through your service provider. In other words, you better know your data deal if you want to avoid overage charges.If your data is capped, say at 5GB per month, which is Verizon’s standard introductory plan, overage charges are $10 for every GB you go over. That’s not terrible for single users. One GB is about 25 web pages per day, but mix in everybody else in the office and it can add up fast.Though a business can make such limits work — most firms obey some sort of data limit with a mobile data plan — unless you actively track usage, which is a science in itself, a business generally does not want to rely exclusively on the cellular-data access.Hosac says CradlePoint is planning to add a data-management feature this fall which will allow users to track their data and receive reminders or shut off the service when it gets close to running over.Bottom line: Though it’s far from the ultimate small-business data solution, CradlePoint is an intriguing option for the more mobile small business. If you do it right, and count your digital usage, you really can have a single office data-connectivity plan that works both in a fixed location and on the go.And that is compelling enough capability to make it worth at least some techno trial and error. Opinions expressed by Entrepreneur contributors are their own. Free Workshop | August 28: Get Better Engagement and Build Trust With Customers Now August 3, 2011 4 min read Enroll Now for Freelast_img read more