Several new solar powered items caught my eye. The Discovery Outdoor Lantern has a multi-source power solution for camping and outdoor activities. In a fixed position it becomes an incandescent spotlight. The World Band Solar & Dynamo Powered Radio has a total of four alternative energy sources. It provides access to emergency services and radio frequencies. Explore further 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. Thinking about alternative energy solutions is not only wise, but it could be a short term emergency necessity. The following products utilize solar power and convert to a standard 12V DC power sources. Discovery Solar Powered Outdoor Lantern:A noteworthy products utilizing solar power is available from the Discovery Store. The Solar Powered Outdoor Lantern runs on a built-in, rechargeable solar battery. The battery may also be recharged using a 12V DC power source. The products isuseful for emergency sources of light or for camping rips and other outdoor uses. The Solar Powered Outdoor Lantern has a 4-watt fluorescent tube that has full circle illumination capability. In a fixed position, the lantern becomes an incandescent spotlight. The lantern has a four hour lighting capacity for a single charge. The lantern comes with a 12V car adaptor. The convenient size 9 inches long by 4.5 inches wide and 4 inches high make it a great accessory for camping and rafting or other outdoor activities. The Solar Powered Lantern weighs less than three pounds. It sells for less than $50 and will be available in early October, 2007.The World Band Solar & Dynamo Powered Radio:The 11 band World Band Solar keeps the user in touch with emergency services, weather, international broadcasts, AM/FM radio and TV stations when a regular power source is unavailable. The World Band Solar & Dynamo Powered Radio comes with a built-in hand generator and a self-contained solar cell for solar charges. It can also be charged from an AC/DC or a car cigarette lighter.The convenient size of the World Band Solar & Dynamo Radio makes it a highly portable device. It measures three inches deep by nine inches wide and less than six inches high. The radio is made with Toshiba components which provides for good quality listening. The item comes with four AA Ni-cad rechargeable batteries. In addition, the radio comes with exclusively designed ear plugs, and an AC/DC plug. The 12 V car charger cable is available, but not included with the radio. The World Band radio will provide seven hours of listening from a single charge. The LED indicator light will forewarn the user when the battery is getting low. The product is definitely a multi-source powered band radio. The product is new on the market and the introductory price is $105 and an additional shipping cost of $12.95. The product is sold on-line by Global Merchants. Citation: Think Solar Solutions: Outdoor Lantern & World Band Radio (2007, October 1) retrieved 18 August 2019 from https://phys.org/news/2007-10-solar-solutions-outdoor-lantern-world.html Detection of spike-like structures near the front of a shock-driven solar radio burst
Graham-Cumming said he was initially worried there would not be enough supporters for building a computer driven by steam, with only 1 k of memory and “13,000 times slower than a ZX81”, but so far over 3,100 people have pledged support and donations of $10/₤10/€10 each to the non-profit Plan 28 campaign. About 50,000 supporters donating a total of around $640,000 are needed by the end of January 2011 to get the project off the ground. If the Engine is built, it will be donated to a museum such as the Science Museum. (PhysOrg.com) — A campaign based in the UK is hoping to construct Charles Babbage’s steam-powered Analytical Engine, a prototype computer around the size of a steam locomotive, which Babbage designed in 1837. While elements of the engine have been constructed in the past a complete working model has never been built. Citation: Campaign to build 1837 Babbage’s Analytical Engine (2010, October 19) retrieved 18 August 2019 from https://phys.org/news/2010-10-campaign-babbage-analytical.html © 2010 PhysOrg.com Trial model of a part of the Analytical Engine, built by Babbage, as displayed at the Science Museum (London). More information: blog.jgc.org/ 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. Explore further The idea was the brainchild of author, science blogger and programmer John Graham-Cumming, who wrote the Geek Atlas. He said the Engine was inspirational, since it was designed long before we had computers as we know them today, but he said that Babbage’s papers show the Engine was the first real general purpose computer, having an expandable memory, a central processing unit (which Babbage called the “mill”), microcode, and a printer and plotter. The computer was to be programmed via punch cards to carry out a variety of tasks.Babbage, an engineer and mathematician, designed the Analytical Engine to be constructed of iron and brass. It was a successor to the Difference Engine, a massive machine made of brass, but which was a calculator rather than a true computer. Several versions of the Difference Engine have been built, including one at London’s Science Museum, made in the 1980s. Babbage created many designs for the Analytical Engine, and the current campaign is to construct the design named Plan 28.The Analytical Engine would be built after Babbage’s blueprints, held at the Science Museum in London, have been digitized and fully deciphered. A three-dimensional simulation would then be created on computer to allow any problems to be overcome before physical construction begins.Graham-Cumming said the machine would be a great educational resource that would help people understand how computers work. He also envisages holding competitions for people to write programs to run on the Engine. He said building the Engine would be a celebration of Charles Babbage’s achievements, and it would also be fantastic to use it to execute the code written especially for it by famous Victorian mathematician Ada Lovelace, who worked with Babbage on the Engine. Her code is intended to calculate the Bernoulli sequence of numbers, which she worked on until 1843, and is the first computer program. X-ray named top achievement by British museum
Measuring the magnetism of antimatter: Researchers measure antiprotons more accurately than ever before (Phys.org) —A research team made up of physicists from the US, Canada and Germany has succeeded in making the first individual-particle measurement of the magnetic moment of an antiproton. In their paper published in Physical Review Letters, they describe how they managed to capture a single antiproton and measured its magnetic moment in a way that is more precise (by a factor of 680) than any previous measurement efforts to date. The magnetic moment of an antiproton relates in a broad sense to its angular momentum—theory suggests it should be equal to the magnetic moment of its counterpart, the proton. Testing such theories requires conducting experiments to discern if such symmetry does truly exist. As part of a wide range of experiments meant to compare matter with its antimatter counterparts, researchers look to what is known as “Charge Parity Time” symmetry—the more scientists learn about it, the more they expect to learn about the nature of the universe and to help answer questions such as why there appears to be far more matter than antimatter.One aspect of such symmetry testing is measuring the magnetic moment of particles such as protons and antiprotons and then comparing them to one another to see if they match. To do that in this latest effort, the research team took equipment that had been developed to measure the magnetic moment of a proton to CERN—it’s one of the few places antiprotons can be had. But that was only the beginning, the team had to first slow the antiproton down as it was delivered at near light speed. To do that they shuttled it into a Penning trap—a device that uses magnets to cause particles to orbit around a central hub until they slow down enough to study. They also had to filter out all the other particles that came with the delivery. Overall, the researchers describe the process as very difficult. But in the end, they found success—they took the most precise measurement of the magnetic moment to date of an antiproton and in so doing found that it was close enough to measurements taken of the magnetic moment of protons to proclaim the two to be “exactly opposite”—they have equal strength but opposite spins.The results obtained by this study add credence to the Standard Model and leads scientists ever closer to gaining a true understanding of how the universe really works at the subatomic level. (a) The CPT symmetry can be likened to a mirror that reflects spatial coordinates, flips charge and other additive quantum numbers, and reverses time. To test for cracks in this CPT mirror, physicists check whether the magnetic moment of the proton (left) has the same magnitude as that of the antiproton (right). (Technically, the moments have opposite signs due to the way magnetic moment is defined relative to the spin.) (b) To measure the antiproton’s magnetic moment, the ATRAP Collaboration measures the cyclotron and spin-flip frequencies, fc and fs, respectively. The ratio of these frequencies gives the antiproton’s magnetic moment in terms of the nuclear magneton μN. Credit: APS/Alan Stonebraker Citation: Researchers at CERN take most precise measure of magnetic moment of antiproton (2013, April 9) retrieved 18 August 2019 from https://phys.org/news/2013-04-cern-precise-magnetic-moment-antiproton.html © 2013 Phys.org Journal information: Physical Review Letters More information: One-Particle Measurement of the Antiproton Magnetic Moment, Phys. Rev. Lett. 110, 130801 (2013) DOI:10.1103/PhysRevLett.110.130801 (Free PDF)AbstractFor the first time a single trapped antiproton (p̅ ) is used to measure the p̅ magnetic moment μp̅ . The moment μp̅ =μp̅ S/(ℏ/2) is given in terms of its spin S and the nuclear magneton (μN) by μp̅ /μN=-2.792 845±0.000 012. The 4.4 parts per million (ppm) uncertainty is 680 times smaller than previously realized. Comparing to the proton moment measured using the same method and trap electrodes gives μp̅ /μp=-1.000 000±0.000 005 to 5 ppm, for a proton moment μp=μpS/(ℏ/2), consistent with the prediction of the CPT theorem.Physics Viewpoint Explore further 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 new system that incorporates backpropagation into reservoir computing (“Full”) outperforms other reservoir computing systems (“Reservoir”). Credit: Hermans et al. ©2016 American Physical Society Neuromorphic computing mimics important brain feature More information: Michiel Hermans et al. “Embodiment of Learning in Electro-Optical Signal Processors.” Physical Review Letters. DOI: 10.1103/PhysRevLett.117.128301 The basic idea of backpropagation is that the system performs thousands of iterative calculations that reduce the error a little bit each time, bringing the computed value closer and closer to the optimal value. In the end, the repeated computations teach the system an improved way of computing a solution to a problem.In 2015, researchers performed the first proof-of-concept experiment in which the backpropagation algorithm in conjunction with the reservoir computing paradigm was tested on a simple task.In the new paper, the researchers have demonstrated that the algorithm can perform three much more complicated tasks, outperforming reservoir computing systems that do not use backpropagation. The present system is based on a photonic setup (specifically, a delay-coupled electro-optical system) in which the information is coded as the intensity of light pulses propagating in an optical fiber. The key to the demonstration is to physically implement both the reservoir computer and the backpropagation algorithm on the same photonic setup.The three tasks performed were a speech recognition task (TIMIT), an academic task often used to test reservoir computers (NARMA10), and a complex nonlinear task (VARDEL5) that is considered beyond the reach of traditional reservoir computing. The fact that the new system can tackle this third task suggests that the new approach to self-training has potential for expanding the computing territory of neuromorphic systems.”We are trying to broaden as much as possible the range of problems to which experimental reservoir computing can be applied,” Antonik said. “We are, for instance, writing up a manuscript in which we show that it can be used to generate periodic patterns and emulate chaotic systems.”While the demonstration shows that the new approach is robust against various experimental imperfections, the current set-up is limited by the speed of some of the data processing and data transfer, which the researchers expect can be improved in future work.”We aim to increase the speed of our experiments,” Antonik said. “The present experiment was implemented using a rather slow system, in which the neurons (internal variables) were processed one after the other. We are currently testing photonic systems in which the internal variables are all processed simultaneously—we call this a parallel architecture. This can provide several orders of magnitude of speed-up. Further in the future, we may revisit physical error backpropagation, but in these faster, parallel, systems.” Journal information: Physical Review Letters (Phys.org)—Researchers have developed a neuro-inspired analog computer that has the ability to train itself to become better at whatever tasks it performs. Experimental tests have shown that the new system, which is based on the artificial intelligence algorithm known as “reservoir computing,” not only performs better at solving difficult computing tasks than experimental reservoir computers that do not use the new algorithm, but it can also tackle tasks that are so challenging that they are considered beyond the reach of traditional reservoir computing. 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. © 2016 Phys.org The results highlight the potential advantages of self-learning hardware for performing complex tasks, and also support the possibility that self-learning systems—with their potential for high energy-efficiency and ultrafast speeds—may provide an extension to the anticipated end of Moore’s law.The researchers, Michiel Hermans, Piotr Antonik, Marc Haelterman, and Serge Massar at the Université Libre de Bruxelles in Brussels, Belgium, have published a paper on the self-learning hardware in a recent issue of Physical Review Letters.”On the one hand, over the past decade there has been remarkable progress in artificial intelligence, such as spectacular advances in image recognition, and a computer beating the human Go world champion for the first time, and this progress is largely based on the use of error backpropagation,” Antonik told Phys.org. “On the other hand, there is growing interest, both in academia and industry (for example, by IBM and Hewlett Packard) in analog, brain-inspired computing as a possible route to circumvent the end of Moore’s law. “Our work shows that the backpropagation algorithm can, under certain conditions, be implemented using the same hardware used for the analog computing, which could enhance the performance of these hardware systems.”Developed over the past decade, reservoir computing is a neural algorithm that is inspired by the brain’s ability to process information. Early studies have shown that reservoir computing can solve complex computing tasks, such as speech and image recognition, and do so more efficiently than conventional algorithms. More recently, research has demonstrated that certain experimental implementations, in particular optical implementations, of reservoir computing can perform as well as digital ones.In more recent years, scientists have shown that the performance of reservoir computing can be improved by combining it with another algorithm called backpropagation. The backpropagation algorithm is at the heart of the recent advances in artificial intelligence, such as the milestone earlier this year of a computer beating the human world champion at the game of Go. Explore further Citation: Self-learning computer tackles problems beyond the reach of previous systems (2016, October 10) retrieved 18 August 2019 from https://phys.org/news/2016-10-self-learning-tackles-problems-previous.html
More information: EPIC 220504338b: A dense hot-Jupiter transiting a solar analogue, arXiv:1611.07614 [astro-ph.EP] arxiv.org/abs/1611.07614AbstractWe present the discovery of EPIC 220504338b, a dense hot-Jupiter discovered using photometry from Campaign 8 of the Kepler-2 (K2) mission and high-resolution spectroscopic follow up obtained with the FEROS spectrograph. The planet orbits a V=13.68 solar analogue in a P=5.81771+0.00004−0.00004 day orbit, has a radius of 0.91+0.10−0.07RJ and a mass of 1.28+0.11−0.12MJ. With a density of 2.08+0.66−0.57 gr/cm3, the planet is among the densest systems known having masses below 2 MJ and Teq>1000, and is just above the temperature limit at which inflation mechanisms are believed to start being important. Based on its mass and radius, we estimate that EPIC 220504338b should have a heavy element content on the order of ∼ 110 M⊕ or greater. Explore further Jupiter-like planet discovered in a distant star system Artist’s impression of a “hot Jupiter”. Credit: Ricardo Cardoso Reis (CAUP) © 2016 Phys.org (Phys.org)—Astronomers have detected a so-called “hot Jupiter” exoplanet transiting a distant sun-like star located some 1,800 light years from the Earth. The newly discovered planet, designated EPIC 220504338b, was found using NASA’s prolonged Kepler mission known as K2. The findings are presented in a paper published Nov. 23 on arXiv.org. Citation: Astronomers discover a dense ‘hot Jupiter’ exoplanet orbiting a sun-like star (2016, November 29) retrieved 18 August 2019 from https://phys.org/news/2016-11-astronomers-dense-hot-jupiter-exoplanet.html EPIC 220504338b was first spotted by K2 as a planetary candidate during the spacecraft’s Campaign 8 in mid-2016. To confirm it as a planet, a team of researchers led by Nestor Espinoza of the Pontifical Catholic University of Chile conducted follow-up observations using ESO’s Fibre-fed, Extended Range, Échelle Spectrograph (FEROS) at La Silla Observatory in Chile. FEROS observational campaign was carried out in August and November 2016.FEROS is a bench-mounted, high-resolution, environmentally controlled, astronomical Échelle spectrograph with high efficiency, large wavelength range and high resolution. The instrument enables conducting a large variety of stellar and extra-galactic spectroscopic observation programs requiring high spectral stability high-resolution.Recent FEROS spectroscopic observations allowed the team to perform radial velocity measurements that confirmed EPIC 220504338b is a dense “hot Jupiter” transiting a solar analogue as well as provided initial stellar parameters of its host star.”In this work, we have presented the discovery of EPIC 220504338b, a new hot Jupiter orbiting a metal-rich solar analogue discovered using photometry from Campaign 8 of the K2 mission and follow-up radial velocities using the FEROS spectrograph,” the scientists wrote in the paper.The so-called “hot Jupiters” like EPIC 220504338b are gas giant planets, similar in characteristics to the solar system’s biggest planet, with orbital periods of less than 10 days. They have high surface temperatures, as they orbit their parent stars very closely.According to the research, EPIC 220504338b is about 10 percent smaller than Jupiter and approximately 30 percent more massive. The exoworld orbits its 6-billion-year-old sun-like parent star every 5.8 days. Notably, with a density of nearly 2.1 gr/cm3 and an equilibrium temperature of about 1,160 K, the planet is one of the densest “hot Jupiters” below two Jupiter masses known to date.The researchers explain the newly discovered planet’s mass and radius by the amount of heavy elements in the planet, which should be on the order of at least 110 Earth masses.”The mass and radius of EPIC 220504338b could be explained in terms of the amount of heavy elements in the planet. (…) Based on its mass and radius, we estimate that EPIC 220504338b should have a heavy element content on the order of about 110 Earth masses or greater,” the paper reads.The team also derived fundamental parameters of the host star EPIC 220504338. The observations indicate that this star has a mass to that of the sun, with a radius of about 1.05 solar radii. It is also approximately 23 percent more dense than the sun.However, EPIC 220504338 shows a high metallicity, which significantly deviates from the sun. Therefore, this star was classified as a slightly metal-rich solar analogue. 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.
Glazed with myriad books from varied genres, the ongoing World Book Fair in the capital’s Pragati Maidan, shone with an astounding collection of books for children and youth, with an entire hall dedicated to this section. Move aside encyclopedias, puzzles, toys, fables, story books and novels, now its the era for three-dimensional books for children, which has replaced them all. In fact these books emerged as the most popular choice during the fair. Also Read – ‘Playing Jojo was emotionally exhausting’Visitors to the children pavilion were the highest and, interestingly, had a mix of all age groups. Apart from just reading a story, nowadays children need that extra edge to keep them hooked, was the feeling I garnered from most publishers concentrating on children’s literature. Ajay Parmar, who heads Bonnier Publishing, explained this trend, ‘There is a need for publishers to pack in a lot of activity in children’s books now. Such books instantly attract their attention. We have a series of puppet books, which makes the entire process of story-telling interesting as well as refreshing. There are also varied activities which have been incorporated in children’s books, to include 3D cut-outs, illustrations, dot-to-dot diagrams, paintings and also jigsaw puzzles. The entire process of storytelling has been completely renewed and revamped now.’ Also Read – Leslie doing new comedy special with NetflixAn innovative book Lets Lace at Ajay’s stall focused on the process of tying laces, and at the end had a 3D shoe cut-out which pops out, where the child can actually implement what they had learnt through the course of the book. Another interesting book Theo focused on smell, where the little pup Theo goes out in search of adventures and discovers honey, rose and strawberry through the course of the journey. Each of these flavours can be touched and then smelt by the reader.A lot of young mothers and their children were seen at the stalls that had displayed books exploring fairy tales and nursery rhymes in three-dimension. Lucky Dhawan from Future books had a fantastic collection of 3D books. ‘There is a huge demand for such books. As children view them as something different and interesting, they get immediately attracted to them,’ says Lucky. There was a dedicated stall to 3D books – what with the special glasses provided, the children had a riot reading these books. This hall, apart from books, also showcased stationary items, toys and computer games CDs for children. Naturally, children flocked here, pittering and pattering about. You could see them pulling their parents to the 3D stalls to have a look. Neeta Sinha, a young mother who bought a collection of these books said, ‘My son dragged me here as he was so fascinated by the whole idea of 3D books. Cinema has a huge role to play here, as children have been watching a lot of such films.’Apart from this hall dedicated to books for children and youth, the pavilion hosting foreign publishers was a sheer delight as well. Organised by the National Book Trust of India, the fair saw books from countries such as China, the US, Poland, South Korea and Turkey as well as United Nations agencies. This year, the focus is on France and its publishing industry and contemporary literature.Walking past the energised crowd of young school kids, families as well as couples with tiny tots, one is immediately engulfed by a feeling of sheer thirst to purchase an instant good read.The chilly breeze supplemented by the winter sun, walking past the enthusiastic faces discovering the fair was an engaging experience for a first-timer like me at the popular book fair. For the sheer delight of engulfing yourself in an intellectually and creatively stimulating environ, don’t give this fair a miss. It is on till 10 February, so go ahead pile up some more books. And make sure you grab a 3D copy that interests you as well.
Based on the novel All That Could Have Been, which is co-written by
In an effort to recreate and revive the Indian classical theatre, National School of Drama is organising the performance of Abhignana Shakuntalam under the direction of Rita Ganguly, an eminent professor of the school. Sanskrit classical theatre has a highly developed theatre technique and its training is an integral part of NSD curriculum, giving an opportunity to the students to interpret contemporary theatre practice inspired by
Kolkata: Indian pop icon Usha Uthup has instituted ‘Stagecraft Award’ to acknowledge the contributions of technicians, who are the backstage heroes of any entertainment show, and has roped in Bengali superstar Prosenjit Chatterjee as the ‘face’ of the award. This year there will be 16 award categories, three special awards and one ‘Hall Of Fame’ award, Uthup told a press meet here. The categories will include Best Event Set Designer, Best Sound Engineer (Stage), Best Choreographer, Best Make-Up Artist, Best Costume Designer, Best Theatre Production, Best Event Director, Best Event Manager, Special Awards and Special Jury Recognition Award, she said on Tuesday. Also Read – Rain batters Kolkata, cripples normal life “The aim of the foundation is to give recognition to those who work tirelessly behind the stage to make any on-stage performance successful,” Uthup said. Uthup, the founder trustee of Stagecraft Foundation, said the award function will be held on September 22, 2018 and the winner of the ‘Hall of Fame’ award will be disclosed on that day. Chatterjee said “We must give these craftsmen the limelight once at least which they truly deserve.” The jury members for the award 2018 included percussionist Tanmoy Bose, danseuse Tanushree Shankar, theatre personality-actor Bratya Basu and fashion designer Agnimitra Paul.
Parallel paths met when an event showcasing the similar approach towards strengthening cultural bonds was held in the national Capital recently. Indian Council for Cultural Relations’ two-day bilateral seminar on ‘Indo-Vietnam Cultural Relations: Retrospect and Prospect’ was inaugurated at Azad Bhavan on Saturday.Prof. Lokesh Chandra, President, ICCR addressed the crowd by saying: “History shapes a nation’s future. The Indian traders and monks who had once migrated from India to Vietnam, had established their Champa (Hindu) kingdoms in central Vietnam without any violence or invasion. Also Read – ‘Playing Jojo was emotionally exhausting’“The Indian approach was sharing, which gave them scripts for language while cotton fabrics and sugar were major exports at the highest point in Vietnam. In the past 2000 years Vietnam has maintained its identity while we have a problem in India. International Mother Language Day, accepted by UNESCO India and Vietnam, must change terminology as language is power.”Guest of Honour, HE Ton Sinh Thanh, Ambassador, Socialist Republic of Vietnam, said: “Cultural Cooperation is one of the pillars in the strategic partnerships between our two countries. Also Read – Leslie doing new comedy special with Netflix“Vietnam and India have many cultural similarities which have been accumulated by the interactions between our countries over the last 2000 years. Besides enhancing the exchange of artists, cultural troops, students and think tanks, we should try new areas such as exchange of movies and promoting film shooting in other countries.” The Chief Guest, Shri Anil Wadhwa, Secretary (East), Ministry of External Affairs said: “Buddhism has a long history which dates back to the 3rd Century BC in Vietnam. Furthermore, some historians also feel that the first oldest Hindu kingdom, Funan ruled from Vyadhapura was established in the lower valley of the Mekong. “The carvings of Cham period depicted events of Ramayana and Indian mythology such as Marriage ceremony of Ram–Sita, Krishna playing flute, Indra and Dancing apsaras, Vishnu and Sheshnag and the Shivling. The depiction of musical instruments such as Pakhawaj, Mridangam, Drums etc. are reflective influence of Indian music. Vietnam’s famous LakhonBassac dance drama is based on the epic of the Ramayana (Ramleela).”As cultural relations play an important role in building people to people contacts, future areas of cooperation could make film production in Vietnam which will help in increasing tourism between the two countries as Bollywood has been attracting tourism all around the world. Commenting on the relevance of the seminar, Ambassador C Rajasekhar, Director General, ICCR said: “The Seminar is an effort to unearth the contacts between these two ancient civilisations and would cover the centuries-old cultural bonding between India and Vietnam: role of Hinduism and Buddhism, relevance of culture and literature in today’s geopolitical scenario in the context.”