Blu-ray is an interesting format. It holds a lot more data than a traditional CD or DVD, and it allows for high definition viewing experiences. As it turns out however, the average consumer probably does not care that much about that level of high definition. Sure, some segments of the market, like the film industry, movie buffs and gamers, have latched on quickly, but it seems for the average consumer the Blu-ray disc drives just are not worth the extra costs that they add onto the machines, which may explain why they have yet to become standard on most machines. That has not stopped manufacturers from taking bets that eventually Blu-ray will be the future of the disk-based data storage world. More information: In Japanese: panasonic.co.jp/corp/news/offi … 04-1/jn110404-1.html Panasonic is making one of its bets on Blu-ray in the re-writeable end of the market. They have announced the release of re-writable Blu-ray discs, which will allow consumers to put data on the disk multiple times, much like with the more common CD- or DVD-RW. The disks, which have been dubbed the LM-BE100J BDXL, are a special series. These single-sided triple-layer disks, which have a scratch resistant coating on them to help keep them from being destroyed by daily wear and tear, will be able to hold up to 100GB of data at a time.Before you get excited, you will need to make sure that you burner is compatible with the Blu-ray-RW’s, since not all burners are ready to use these disks. We do know that the newest burners made by both Pioneer and Buffalo are compatible with these disks. If you think you can skip the check, and just shove it in the drawer if it doesn’t work, you are making a serious gamble. Each of these disks will set you back about $120. The disks are expected to be on sale, in Japan, on April 15th. Explore further Blu-Ray Dics Physical Specification Approved and Available to Disc Manufacturers Citation: Panasonic releases re-writeable triple-layer 100GB Blu-ray disk (2011, April 4) retrieved 18 August 2019 from https://phys.org/news/2011-04-panasonic-re-writeable-triple-layer-100gb-blu-ray.html © 2010 PhysOrg.com 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 power output of a nanogenerator depends on voltage and current, because the output power is the product of the voltage and current,” Wang told Phys.org. “By raising the output voltage, we naturally raised the output power. This is essential for any and all applications for driving small electronics, portable electronics and wireless sensors.” More information: Long Gu, et al. “Flexible Fiber Nanogenerator with 209 V Output Voltage Directly Powers a Light-Emitting Diode.” Nano Letters. DOI: 10.1021/nl303539c The researchers, led by Yong Qin at Lanzhou University in Lanzhou, China, and the Chinese Academy of Sciences in Beijing; and Zhong Lin Wang of the Chinese Academy of Sciences and the Georgia Institute of Technology in the US, have published their study on the new nanogenerator in a recent issue of Nano Letters.The nanogenerator consists of an array of vertically aligned 420-μm-long nanowires, with electrodes on the top and bottom of the array. Under the periodic impact of an object weighing about half a pound, or simply the press of a finger, the nanogenerator experiences a pressure that causes the nanowire array to deform. Due to the piezoelectric effect, this mechanical compression drives electrons toward the bottom electrode, generating an electric current. When the heavy object is removed, the pressure is released and the electrons flow back through the circuit. By repeating this periodic mechanical deformation on the nanogenerator, the researchers could generate electricity. PausePlay% buffered00:0000:00UnmuteMuteDisable captionsEnable captionsSettingsCaptionsDisabledQuality0SpeedNormalCaptionsGo back to previous menuQualityGo back to previous menuSpeedGo back to previous menu0.5×0.75×Normal1.25×1.5×1.75×2×Exit fullscreenEnter fullscreen Play Video showing the full set-up of the nanogenerator connected to an LED, a close-up of the LED, and the LED light shining in synchrony with the nanogenerator’s pulsing electric signals. Video credit: Long Gu, et al. ©2012 American Chemical Society The researchers showed that the power output achieved here is high enough to directly power a commercial 1.9 V LED. Unlike most other nanogenerators, the new device does not require an energy storage unit, an advantage that can enable self-powered systems to operate in a wide variety of environments.Besides powering an LED, the nanogenerator may also have biological applications. Here, the researchers used the nanogenerator to stimulate a frog’s sciatic nerve and cause the frog’s gastrocnemius calf muscle to contract. Previously, this phenomenon has been demonstrated using a large nanogenerator with an area of about 9 cm2, whereas the new nanogenerator with an area of just 0.95 cm2 can perform the same nerve stimulation and induce muscle movement under the small impact of a tiny finger tap. In the future, tiny high-power nanogenerators like this one could have applications in repairing biological neural networks, in national security, and in the “Internet of Things.” In this last scenario, all physical objects would be tagged (such as with radio frequency identification [RFID]), and virtually represented in a future Internet, where they could be monitored in real time.”The future plan is to continually raise the output power so that we can meet more technological needs,” Wang said. Journal information: Nano Letters Explore further First practical nanogenerator produces electricity with pinch of the fingers (Top) The nanogenerator produces a voltage under a periodic mechanical deformation. In the deformed nanogenerator, the red and blue regions indicate a positive and negative piezoelectric potential, respectively. (Bottom) Optical photographs of the nanowire array showing its flexibility and robustness. Credit: Long Gu, et al. ©2012 American Chemical Society (Phys.org)—Taking an important step forward for self-powered systems, researchers have built a nanogenerator with an ultrahigh output voltage of 209 V, which is 3.6 times higher than the previous record of 58 V. The nanogenerator, which has an area of less than 1 cm2, can instantly power a commercial LED and could have a wide variety of applications, such as providing a way to power objects in the “Internet of Things.” Play The impact of a finger can cause the nanogenerator to produce sufficient current to stimulate a frog’s sciatic nerve, which causes the frog’s gastrocnemius muscle to contract, moving the frog’s leg. Video credit: Long Gu, et al. ©2012 American Chemical Society The scientists found that the amount of electricity generated by the nanogenerator depends on the impact force. By dropping an object with a weight of 193 grams onto the nanogenerator from different heights ranging from 5 to 13 mm, the scientists observed that the output signal is proportional to the square root of the falling height.In their experiments, the researchers demonstrated that a large enough impact force applied to the nanogenerator can generate a peak voltage of 209 V and a peak current of 53 μA, corresponding to a current density of 23.5 μA/cm2, which is 2.9 times higher than the previous record output current density of 8.13 μA/cm2. PausePlay% buffered00:0000:00UnmuteMuteDisable captionsEnable captionsSettingsCaptionsDisabledQuality0SpeedNormalCaptionsGo back to previous menuQualityGo back to previous menuSpeedGo back to previous menu0.5×0.75×Normal1.25×1.5×1.75×2×Exit fullscreenEnter fullscreen Copyright 2013 Phys.org All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part without the express written permission of Phys.org. Citation: Nanogenerator’s output triples previous record (2013, January 3) retrieved 18 August 2019 from https://phys.org/news/2013-01-nanogenerator-output-triples-previous.html 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.
Credit: CC0 Public Domain Quantum measurement carries information even when the measurement outcome is unread 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 More information: M. Revzen and A. Mann. “Measuring unrecorded measurement.” EPL. DOI: 10.1209/0295-5075/115/30005 (Phys.org)—Typically when scientists make a measurement, they know exactly what kind of measurement they’re making, and their purpose is to obtain a measurement outcome. But in an “unrecorded measurement,” both the type of measurement and the measurement outcome are unknown. Citation: Physicists retrieve ‘lost’ information from quantum measurements (2016, September 19) retrieved 18 August 2019 from https://phys.org/news/2016-09-physicists-lost-quantum.html Journal information: Europhysics Letters (EPL) © 2016 Phys.org Despite the fact that scientists do not know this information, experiments clearly show that unrecorded measurements unavoidably disturb the state of the system being measured for quantum (but not classical) systems. In classical systems, unrecorded measurements have no effect.Although the information in unrecorded measurements appears to be completely lost, in a paper published recently in EPL, Michael Revzen and Ady Mann, both Professors Emeriti at the Technion-Israel Institute of Technology, have described a protocol that can retrieve some of the lost information.The fact that it is possible to retrieve this lost information reveals new insight into the fundamental nature of quantum measurements, mainly by supporting the idea that quantum measurements contain both quantum and classical components. Previously, analysis of quantum measurement theory has suggested that, while a quantum measurement starts out purely quantum, it becomes somewhat classical when the quantum state of the system being measured is reduced to a “classical-like” probability distribution. At this point, it is possible to predict the probability of the result of a quantum measurement. As the physicists explain in the new paper, this step when a quantum state is reduced to a classical-like distribution is the traceable part of an unrecorded measurement—or in other words, it is the “lost” information that the new protocol retrieves. So the retrieval of the lost information provides evidence of the quantum-to-classical transition in a quantum measurement.”We have demonstrated that analysis of quantum measurement is facilitated by viewing it as being made of two parts,” Revzen told Phys.org. “The first, a pure quantum one, pertains to the non-commutativity of measurements’ bases. The second relates to classical-like probabilities.”This partitioning circumvents the ever-present polemic surrounding the whole issue of measurements and allowed us, on the basis of the accepted wisdom pertaining to classical measurements, to suggest and demonstrate that the non-commutative measurement basis may be retrieved by measuring an unrecorded measurement.”As the physicists explain, the key to retrieving the lost information is to use quantum entanglement to entangle the system being measured by an unrecorded measurement with a second system. Since the two systems are entangled, the unrecorded measurement affects both systems. Then a control measurement made on the entangled system can extract some of the lost information. The scientists explain that the essential role of entanglement in retrieving the lost information affirms the intimate connection between entanglement and measurements, as well as the uncertainty principle, which limits the precision with which certain measurements can be made. The scientists also note that the entire concept of retrieval has connections to quantum cryptography.”Posing the problem of retrieval of unrecorded measurement is, we believe, new,” Mann said. “The whole issue, however, is closely related to the problem of the combatting eavesdropper in quantum cryptography which aims, in effect, at detection of the existence of ‘unrecorded measurement’ (our aim is their identification). The issue of eavesdropper detection has been under active study for some time.”The scientists are continuing to build on the new results by showing that some of the lost information can never be retrieved, and that in other cases, it’s impossible to determine whether certain information can be retrieved.”At present, we are trying to find a comprehensive proof that the retrieval of the measurement basis is indeed the maximal possible retrieval, as well as to pin down the precise meaning of the ubiquitous ‘undetermined’ case,” Revzen said. “This is, within our general study of quantum measurement, arguably the most obscure subject of the foundation of quantum mechanics.”
Ashish N Soni’s collection took the garments to the microbiology lab with cells digitally printed on the ensembles. The cuts are feminine but most of his creations failed to impress. The colour story revolved around saffrons, indigos, ivories and deep greys. Peplums were big in his creations too, with draped blouses, yoke shirt tunics, jackets, pencil skirts, dresses, pants and even trench coats (yes, even for Indian summers). We liked a single-buttoned tafetta jacket worn withfitted pants in blood vessel and clot print.
National Museum organised a function to induct 40 trained volunteers into its Yuva Saathi programme yesterday. VenuV, Director General, National Museum, presented the certificates to the participants of the second batch who completed the training.Yuva Saathi is a pioneering programme of the Museum aimed at engaging young minds in a dialogue with the museum. The programme envisages the deployment of young volunteer guides, Yuva Saathis, to provide guided tours to school children. Yuva Saathis are students from various colleges of Delhi trained specifically to guide school students in the National Museum. The programme caters solely to School Groups.Around 40 volunteers have successfully completed the training programme, and are deployed as volunteer guides. More training programmes are planned, so as to increase to 200, the number of volunteer guides for school group.The programme has taken inspiration from the tremendous success of the Pathpradarshak programme. Young guides from the batch-I of this programme are effectively guiding the school children. The results have been excellent and the students’ satisfaction rate has been hundred percent.This spirit of volunteerism for museums as successfully displayed here can become a template for other museums in the country.
To reposition its textile business and expand globally, Reliance Industries on Tuesday announced a joint venture with China’s $3 billion Shandong Ruyi Science and Technology Group.The JV firm, where Reliance Industries will own 51 per cent stake and Shandong Ruyi will have 49 per cent, also plans to bring some global brands to India while benefiting from the strength of RIL’s Vimal brand.Textile happens to be founding business of $75-billion RIL group, which has since emerged as a major player in energy and retail businesses and is now expanding big time into telecom arena as well, among others. Also Read – I-T issues 17-point checklist to trace unaccounted DeMO cashAs per the definitive agreements, RIL will transfer its existing textile business into the newly incorporated JV for which it will receive cash consideration. However, the companies did not disclose the financial details of the deal. Ruyi Group operates in India under the ‘Georgia Gullini’ brand in the worsted suiting segment of the market. The new JV will build on RIL’s existing textile business and wide distribution network in India as well as Ruyi’s state of the art technology and its global reach, a statement said. Also Read – Lanka launches ambitious tourism programme to woo Indian tourists”The JV will benefit from the strength of ‘Vimal’ and ‘Georgia Gullini’ brands and plans to introduce some of the well known global brands,” it added.The proposed transaction is subject to regulatory approvals.”Reliance Industries and Shandong Ruyi Science and Technology Group Co Ltd, China have executed definite agreements for a joint venture (JV) in textiles,” Reliance Industries said. Commenting on the deal, RIL Executive Director Nikhil R Meswani said: “Our joint venture with Ruyi Group will help Reliance reposition its textile business on a high growth path.”
Notwithstanding the marginal rise in December inflation, India Inc on Wednesday said that low oil prices and measures undertaken by the Government are likely to keep inflation under check, even as it reiterated the need for an interest rate cut by the RBI to kickstart growth. “Given the slow pace of global recovery and expectations of oil prices to remain at low levels going forward, inflation is expected to be under control,” said Ficci President Jyotsna Suri. Also Read – I-T issues 17-point checklist to trace unaccounted DeMO cash“Going forward, the moderation of global commodity prices and the measures taken by the government to contain the inflation would help rein in inflationary expectations and prevent inflation from making a comeback in a big way,” said CII Director General Chandrajit Banerjee said. “Policy makers need to cut the interest rates in order to induce the producers to augment the supply of goods and services on one hand and increase the domestic demand on the other,” Assocham Secretary General D S Rawat said. “Inflation worries are behind us and current demand and supply dynamics indicate that inflation will consolidate at around 3 per cent (average) in 2015,” PHD Chamber President Alok B Shriram said.