Guest author Esmeralda Swartz is chief marketing officer at MetraTech.At the inaugural Chief Digital Officer Summit in New York in March, where I moderated a panel discussion with CDOs from such companies as Disney ABC Studios, BBC, PBS and Rogers, defining the emerging role of the CDO was a key topic.The role of the chief digital officer (CDO) in the enterprise has gotten a great deal of attention in recent months. For example, Gartner predicted that by 2015, 25% of organizations will have a CDO and further estimated that 20% of chief information officers (CIOs) have already taken on the responsibilities of the CDO.Perhaps the best known example of the impact and influence of CDOs came last fall, when the Obama campaign successfully leveraged a team of digital leaders. All the tools of the trade – text analytics, social network/media analysis, Web personalization, computational advertising and online experiments and testing, among other things – were used for re-elect the President of the United States.So what exacty is a CDO, and what do they actually do?Demystifying The CDOIn the digital age, how well information is used may determine the commercial success of products and services. Converting legacy thinking, skills and business practices – along with legacy systems (both back office and front office) – to react to the new digital reality can determine the how competitive legacy businesses can be – especially versus companies that were born digital.Adapting to the digital era requires a new skill set that existing leadership teams, including CIOs, don’t necessarily possess. At many modern companies, it’s hard to find anything that is not related to digital in some way. How do you separate digital strategies from business strategies?The answer is you can’t – and you shouldn’t. A successful digital strategy requires a holistic approach, involving Web, mobile, social and traditional platforms.CDO: Hybrid Of Marketing & TechnologyIn order for a CDO to be successful, he or she must have the authority and responsibility to execute a digital strategy and not have to beg, borrow and steal from other organizations to get the job done. This is not about running an IT infrastructure. CDOs are responsible for analyzing information and knowing how to leverage it. They are also responsible for knowing how to reach audiences across different platforms.This is why the CDO role is more of a hybrid between marketing and technology and sits at the right hand of the CEO. Digital expertise, once a subset of the marketing and IT departments, is becoming a growing discipline in its own right. The CDO is part chief marketing officer and part technologist, but an outward-facing rather than inward-looking business leader.CDO vs. CIOWhile it is true that all things digital are powered by technology, CIOs typically focus on back-office technology. They are not generally the internal champions of front-office innovations. The CDO has the responsibility to use technology to connect with the modern customer and craft the experience they get.Technology must deliver the experience the customer wants, not just what the underlying systems happen to be able to support. The CDO has to be able to acquire information, use analytics to understand customer behavior, and make adjustments based on that data.That means CDOs need to be able to adjust products, offers and pricing as well as how it is marketed and delivered to the marketplace.In the digital era, business models cannot be limited to what legacy IT is able to support. Instead, all business systems, including monetization platforms, must adapt to deliver the experiences customers want. Making sure that happens is the true role of the CDO.Image courtesy of Shutterstock. Tags:#CIO#enterprise IT 3 Areas of Your Business that Need Tech Now esmeralda swartz IT + Project Management: A Love Affair Related Posts Massive Non-Desk Workforce is an Opportunity fo… Cognitive Automation is the Immediate Future of…
Gemstar TV Guide’s announced $2.8 billion sale to Macrovision Corp.—by far the biggest consumer magazine deal of 2007—faces an uphill battle for shareholder approval and ultimately may not go through, industry observers said this week.The transaction—56 percent cash and 44 percent stock—is still pending shareholder approval at both companies. But Gemstar’s declining stock price and questions surrounding Macrovision’s plans for the company have led to serious speculation that some stockholders may vote against the deal.Rupert Murdoch’s News Corp., which owns 41 percent of Gemstar, has publicly agreed to vote in favor of the deal. Loeb Partners, which has a 2.1 percent stake in Macrovision, announced last week that it would vote against the merger. No date has been set for a Gemstar shareholder vote. A spokesperson for Macrovision says their vote will come in mid-to-late March. “When the acquisition was announced in early December, we said that the deal was expected to close early in Q2, 2008 and that is still the plan,” says a Gemstar spokesperson.”We believe that investors are free to make their own decisions,” Macrovision CFO James Budge told FOLIO:. “[And we] continue to believe that this is a compelling business combination.”Wall Street, though, has been skeptical of the pairing from the get-go. News of the deal sent shares of both companies plummeting. Macrovision shares fell 22 percent to $20.35; Gemstar shares dipped 16 percent to $4.99. Overall, Gemstar’s stock has fallen from $6.00 per share on December 7 to $4.31 at the end of trading on January 23. Macrovision’s offer values Gemstar at $5.53 a share.On Tuesday, Reuters compiled an arbitrage spread list based on that day’s stock prices. The Gemstar deal is on the list with a spread—the difference between the offered price and the current trading price—of 40.5 percent. According to the Reuters report, “the wider the spread, the more investors doubt the deal will close.”‘Not a Slam Dunk’“It’s certainly not a slam dunk,” says Reed Phillips, managing partner at media banker DeSilva + Phillips. “There appears to be some controversy regarding the price. We’ll have to wait and see how much clout the shareholders have.”Last week, federal regulators approved the merger between the two companies. But analysts have been critical of the deal, specifically, wondering where TV Guide fits into Macrovision’s master plan. Indeed, Macrovision’s main interest in Gemstar-TV Guide appears to be data. The Santa Clara, California-based company hopes to give customers access to information about television shows and music libraries across a variety of devices and platforms.During a conference call the morning of the sale announcement, Macrovision CEO Fred Amoroso—who will become CEO of the combined company if the sale is approved—said that no decisions had been made about TV Guide’s 3.2 million circulation magazine or its publishing division, and that he would need time to study that part of the company before disclosing his plans for the magazine. “I don’t have a deep background in that area,” Amoroso said, not exactly projecting the confidence in the publishing side of the business.Meanwhile, TV Guide’s performance at the newsstand has been on the decline. During the first half of 2007, the magazine’s single copy sales average fell 26 percent (to 221,900), while the average number of paid subscriptions dipped 11 percent (to 3,038,883).Through the first three quarters of 2007, Gemstar-TV Guide had $472 million in revenues, with an operating income of $72 million. Projected revenue for 2007 for Gemstar-TV Guide is $631 million, with projected EBITDA of $115 million. Amoroso expects the combined company to achieve 10 to 15 percent growth in annual revenues over next five years. read more
Tags Share your voice 1 Tech Industry Security Facebook may soon agree to 20 years of oversight of its privacy policies and practices by the US government, Reuters reported Monday.An investigation by the Federal Trade Commission is trying to determine whether Facebook’s actions violated a 2011 agreement with the government in which it pledged to keep user data private. Facebook has said it didn’t violate the consent decree.Under the agreement, Facebook agreed to get permission from users before sharing their data with third parties. In addition, the tech giant is required to have a third party conduct audits every two years for 20 years to ensure the program is effective.The consumer watchdog began investigating Facebook after revelations surfaced last year that UK consultancy Cambridge Analytica harvested the data of as many as 87 million users without their permission. The social media giant and the consumer protection agency have reportedly been in discussions for months to settle the investigation. Facebook said last month that it had set aside $3 billion to cover possible expenses for a possible fine related to the ongoing investigation.The as-yet-unannounced FTC fine, which Facebook said could be as high as $5 billion, would be the largest ever against a US tech company. The FTC’s previous record-setting fine against a tech company for breaking a privacy agreement was against Google in 2012 for $22.5 million.A settlement announcement could be a month away, a source told Reuters.Facebook and the FTC declined to comment. Comment Privacy Facebook FTC read more
$999 Sprint Preview • iPhone XS is the new $1,000 iPhone X Sarah Tew/CNET The Cheapskate See It 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). $999 Apple iPhone XS $299 at Amazon Mobile Read Lenovo Smart Clock review CNET may get a commission from retail offers. Read DJI Osmo Action preview Review • iPhone XS review, updated: A few luxury upgrades over the XR 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. Sarah Tew/CNET Tags Angela Lang/CNET 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. 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. $261 at Daily Steals via Google Express 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. 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. 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. HP Laptop 15t Value: $520 (save $780) 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 the Rylo camera preview DJI Osmo Action camera: $261 (save $89) Turo: Save $30 on any car rental $59 at eBay Read Google Home Hub review Best Buy 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. JBL Soundgear wearable speaker: $90 (save $160) Comments $999 Boost Mobile 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. Piracy is costing the entertainment industry a lot of money. James Martin/CNET Piracy doesn’t just affect the US entertainment industry, says a new government study. It’s capping the industry’s earning potential while also hurting the economy. Global digital piracy costs the US film and TV industry at least an estimated $29.2 billion and as much as $71 billion annually, according to a new study from the US Chamber of Commerce’s Global Innovation Policy Center on Tuesday. That represents a revenue reduction of 11% to 24%. The study also says 230,000 to 560,000 jobs were lost because of piracy, which in turn resulted in the US GDP taking a hit of $47.5 billion to as much as $115.3 billion in 2017. “Digital video piracy results in significant losses to the US economy, harming businesses ranging from content production firms to the innovative technology companies that are driving the digital distribution revolution,” David Hirschmann, CEO of GIPC, said in the study. “While there is no single solution, global collaboration among industries and governments to educate consumers of the dangers of piracy, coupled with the expansion of legal options in cases of infringement, is necessary to curb these negative effects.”The methodology for the study used estimates based on the number of digitally pirated movies and TV episodes, the market value of that content and how much of that content would have been purchased. The biggest culprit of piracy is online streaming, which accounts for more than 80% of pirated content, according to the study. 2 Comments 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. Chris Monroe/CNET Rylo 5.8K 360 Video Camera: $250 (save $250) piracy,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. 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. Turo Read the AirPods review Sarah Tew/CNET See It $90 at Daily Steals via Google Express TVs Speakers Mobile Accessories Cameras Laptops Automobiles Smart Speakers & Displays See it Mentioned Above Apple iPhone XS (64GB, space gray) $210 at Best Buy Lenovo 130-15AST 15.6-inch laptop: $210 (save $90) See at Amazon Apple AirPods with Wireless Charging Case: $155 (save $45) Tags Lenovo Smart Clock: $59.99 (save $20) Share your voice See at Turo $520 at HP Google Nest Hub: $59 (save $70) $155 at Google Express 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. $6 at Tidal Share your voice Sarah Tew/CNET Free Echo Dot with an Insignia or Toshiba TV (save $50) Rylo 7 See It Tidal 3-month family subscription: $5.99 (save $54) $60 at Best Buy $999 Amazon read more
A security guard was found slaughtered at the site of an under-construction mosque in Vogra area of the city on Thursday.The deceased was identified as Abdul Motaleb, 68, hailing from Bagtabazar village in Mymensingh, used to live in a rented house owned by one Saidur Rahman in the area.Locals said that Motaleb started his job as a guard of the under-construction ‘Bogra Sarkar Para Jame Mosque’ 10 to 12 days ago.Moazzin of the mosque found Motaleb’s blood stained body early in the morning when he went there for calling out Azan, said Aminul Islam, officer-in-charge of Joydebpur police station.Being informed, police recovered the body around 8:30am and sent the body to Shaheed Tajuddin Ahmed Medical College Hospital for an autopsy.
Anti-extremism program won’t stop hate, say Muslims who’ve seen its flaws August 30, 2019 Share This! By: Krishan Francis TagsSri Lanka Sri Lanka attack Sri Lanka Catholic,You may also like Instagram apostasy stirs controversy over Christian ‘influencers’ August 30, 2019 Facebook Twitter Pinterest LinkedIn ReddIt Email By: Krishan Francis Krishan Francis Share This! News Facebook Twitter Pinterest LinkedIn ReddIt Email Photos of the Week August 30, 2019 Share This! Share This! News • Photos of the Week Facebook Twitter Pinterest LinkedIn ReddIt Email Facebook Twitter Pinterest LinkedIn ReddIt Email,COLOMBO, Sri Lanka (AP) — Catholic officials and parents in Sri Lanka are hopeful that church-run schools will begin to reopen soon for the first time since last month’s devastating Easter Sunday attacks on churches and hotels.All of the island nation’s schools were set to reopen the day after the bombings following a two-week break, but they remained closed after the attacks, which killed more than 250 people and injured hundreds more. Government schools reopened last week, but many children stayed home, fearing another attack.Catholic schools, however, have stayed shut out worried that other Catholic properties could be targeted in further attacks.RELATED: Easter Sunday blasts kill at least 207 in Sri LankaIn a memo to Catholic institutions earlier this month, Cardinal Malcolm Ranjith, the archbishop of Colombo, said he had information from a trusted foreign source that a famous church and a lay institution were to be attacked. The church confirmed that the memo, which first appeared on social media, was authentic.On Sunday, the Catholic Church held the first regular Sunday Mass since the April 21 coordinated suicide bombings, amid tight security. Sunday services had been canceled the two previous weekends apprehensive of more attacks, leaving the faithful to hear Mass via live TV transmission from Ranjith’s residence.Later Sunday, Ranjith gave Sri Lanka’s Catholic school administrators permission to reopen on an individual basis in coordination with local security officials.Rangika Perera, a teacher in a Catholic school where her daughter also studies, said reopening the schools and churches was the best way to demonstrate that Sri Lanka’s Catholics hadn’t been defeated by terrorism.“They want to deprive us in every way and we should not help them succeed by our fear,” she said.The Rev. Ivan Perera, the priest in charge of Sri Lanka’s Catholic schools, said that Catholic school administrators have sent study packs to children by email with exercises on a variety of subjects, but that the toll has been more than academic.Priests and nuns working as counselors said Catholic school students “are very traumatized and are very disturbed, a lot of fear in them,” according to the Rev. Perera.“It will take quite a bit of time for them to get back to normal attitudes. It’s very unfortunate that at this age children should be so traumatized and be full of fear,” he said, adding that when schools reopen, administrators will offer students psychological and spiritual help.RELATED: Sunday Mass canceled across Sri Lanka a week after bombingsThe Easter attacks — which were carried out by radicalized local Muslims and claimed by the Islamic State group — targeted three churches: Sri Lanka’s famous St. Anthony’s Shrine in Colombo, the capital; St. Sebastian’s Church in the seaside, majority-Catholic town of Negombo, outside Colombo; and the protestant Zion Church on Sri Lanka’s east coast. Three luxury hotels in Colombo — the Shangri-La, Cinnamon Grand and Kingsbury — were also attacked.There are currently about 40 schools run by Sri Lanka’s Catholic Church, which owned hundreds of schools by the time the Buddhist-majority island gained independence from Britain in 1948. In the 1960s, the state nationalized hundreds of Catholic schools amid a post-independence wave of Sinhala Buddhist revivalism.According to the Rev. Perera, an estimated 10 to 15 Catholic school students died in the blasts, including eight girls from the same convent school in Negombo. The United Nations children’s fund said 45 children were killed in the six near-simultaneous suicide attacks, including tourists.Though Sri Lankan adults lived through at least part of the brutal, decades-long civil war that ended in 2009, in which rebels from Sri Lanka’s ethnic Tamil minority violently clashed with government forces, younger generations had never experienced bomb attacks or armed soldiers standing guard on street corners.“For the past 10 years, there weren’t any of these things,” said Anushka Wijeyeratne, a mother whose two children, ages 5 and 9, attend Catholic school. “Everything is new to them — the checkpoints and other things are absolutely new to them. As parents we have to go back to basics and rethink, we will have to worry about security.”RELATED: Who are Sri Lanka’s Christians?According to conservative U.N. estimates, some 100,000 people were killed in Sri Lanka’s civil war. Minority Catholics were not spared from the violence, but they were not targeted for their religious beliefs. Since the war ended, Sri Lanka experienced only a handful of small-scale incidents of communal violence before the Easter attacks.Cardinal Ranjith has been an outspoken critic of the government for failing to act upon near-specific intelligence from Sri Lanka’s neighbor India that provided details of the plot and the militants who were to be involved.Parents say they trust the church’s leadership more than the government’s when it comes to the safety of their children.“The government has failed and we don’t have confidence in the government in that aspect,” said Wijeyeratne.But, she added, “How long are we going to sustain this sense of fear?” By: Krishan Francis For many Muslims, Ramadan is a built-in digital detox program Krishan Francis,Load Comments,As Emanuel AME documentary screens, survivors, families mull grief and guns News Facebook Twitter Pinterest LinkedIn ReddIt Email,About the authorView All Posts Share This! read more
© 2015 Phys.org More information: Tiago A. Morgado, et al. “Reversed rainbow with a nonlocal metamaterial.” Applied Physics Letters. DOI: 10.1063/1.4905152 Explore further In the metamaterial, as the frequency of light increases, the transmission angle of the light decreases. This means that longer wavelengths are more refracted than shorter wavelengths, which is the opposite of what happens in conventional materials. Credit: Morgado, et al. ©2014 AIP Publishing The scientists demonstrated in both experiments and simulations that the nonlocal metamaterial can create a reverse rainbow. Their prototype consists of a stack of 297 printed circuit boards printed with 0.25-mm-wide metallic strips to connect the atoms’ responses. Although the prototype operates only in the microwave region, the phenomenon could also be demonstrated in the visible and other parts of the spectrum in future experiments. Journal information: Applied Physics Letters (Phys.org)—In a normal rainbow, red is always on “top” while violet is on the “bottom.” This is true whether the rainbow is created by a glass prism or by water droplets in the sky, and is due to the way that these materials refract light of different wavelengths: colors with longer wavelengths (red) are less refracted/bent than colors with shorter wavelengths (violet). Now in a new study, scientists have designed a prism that does the opposite: it refracts longer wavelengths more strongly than shorter wavelengths. The result is a reverse rainbow. “We are currently exploring ways of implementing our nonlocal material at optical frequencies,” coauthor Mario Silveirinha, Professor at the University of Coimbra, told Phys.org. “This is rather challenging from a technological point of view, but we are convinced that it can be done.”Besides creating a reversed rainbow, the metamaterial and its property of anomalous dispersion could have other useful applications. One use is improving optical instruments by decreasing image distortions.”Because of the normal material dispersion, conventional single-material glass lenses are unable to focus all the spectral components of light into the same point, even in ideal circumstances where the effects of diffraction are negligible,” Silveirinha said. “Hence the image produced by a glass lens may have distortions, and in such a case the optical system is said to suffer from chromatic aberrations.”An interesting possibility created by an anomalous material dispersion is the correction of chromatic aberrations. We have shown that by capping a conventional glass lens with normal material dispersion with a suitably designed metamaterial with anomalous dispersion, it may be possible to suppress the effects of material dispersion, and eliminate the chromatic aberrations for all light wavelengths. This may provide an exciting route for improved optical instruments insensitive to chromatic aberrations. Other promising applications of these nonlocal metamaterials include ultra-subwavelength waveguiding and focusing with planar lenses based on negative refraction.” 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. The researchers, Tiago A. Morgado, et al., from the University of Coimbra, the University Institute of Lisbon, and the University of Lisbon, all in Portugal, have published their paper on creating a reverse rainbow in the microwave part of the spectrum using the new prism in a recent issue of Applied Physics Letters.The new prism is made of metamaterials, which are man-made materials that have properties not typically found in natural materials. In this case, the atypical property is non-local topology, which gives rise to the stronger refraction of longer wavelengths and the reverse rainbow. As the scientists explain, natural crystalline materials such as glass and water have a local structure, in which the atoms lie isolated at lattice points and mainly interact only with their nearest neighbors. In contrast, atoms in the new metamaterial are all interconnected by crossed metallic wires. In the resulting non-local structure, each atom’s response to light is fundamentally entangled with the responses of other atoms, even those located far away in the crystal. This nonlocal, interconnected response of the atoms changes the way that the metamaterial disperses different frequencies of light, producing an effect called “anomalous dispersion.” The anomaly is that the refractive index of the material, and therefore the transmission angle of the light, increases as frequency decreases. This is the opposite of what happens in a conventional glass prism or water droplets. Three-dimensional metamaterials with a natural bent Citation: Metamaterial prism creates a reverse rainbow (2015, January 9) retrieved 18 August 2019 from https://phys.org/news/2015-01-metamaterial-prism-reverse-rainbow.html (a) Illustration of the metamaterial prism, consisting of a stack of circuit boards and metallic strips, illuminated by a horn antenna. (b) Photo of the fabricated metamaterial prism prototype. (c) Photo of the experimental setup. Credit: Morgado, et al. ©2014 AIP Publishing read more