That’s why 46-year-old Heins, a college drop-out from Ottawa who’s been working on his project since 1985, is being very cautious. He is the first to admit that he doesn’t know how his machine works from a physics standpoint. He just hopes that someone else might understand. Last week, Heins demonstrated his machine to MIT professor Markus Zahn, an expert in electromagnetic and electronic systems. It proved interesting enough to stump the professor, as well. But Zahn thinks the idea is worth investigating further. “It’s an unusual phenomena I wouldn’t have predicted in advance,” Zahn told The Toronto Star. “But I saw it. It’s real.”In Heins’ machine, he explains that magnetic friction somehow gets turned into a magnetic boost. Working with an electric motor, he attached the drive shaft to a steel rotor with small round magnets lining its outer edges. In this set-up of a simple generator, the rotor would spin so that the magnets passed by a wire coil just in front of them, generating electrical energy. Then Heins did an experiment: he overloaded the generator to get a current, which typically causes the wire coil to build up a large electromagnetic field. Usually, this kind of electromagnetic field creates an effect called “Back EMF” due to the so-called Lenz’s law. The effect should repel the spinning magnets on the rotor, and slow them down until the motor stops completely, in accordance with the law of conservation. But instead of stopping, the rotor began to accelerate. Heins recounts that the first time it happened, the magnets starting flying off and hitting the walls, as he ducked for cover. The magnetic friction wasn’t repelling the magnets and wire coil. Instead, as Heins explains, the steel rotor and driveshaft had conducted the magnetic resistance away from the coil and back into the electric motor. In effect, the Back EMF was boosting the magnetic fields used by the motor to generate electrical energy and cause acceleration.The faster the motor accelerated, the stronger the electromagnetic field it would create on the wire coil, which in turn would make the motor go even faster. Heins seemed to have created a positive feedback loop. To confirm the theory, Heins replaced part of the driveshaft with plastic pipe that wouldn´t conduct the magnetic field. There was no acceleration.”What I can say with full confidence is that our system violates the law of conservation of energy,” he says. He calls his system “Perepiteia,” which in Greek means an action that has the opposite effect of what is intended. But he will leave it to others to decide if the technique can be described as “perpetual motion.”In 2005, Heins formed a company called Potential Difference Inc. to develop and market his invention. He’s also been working with researchers from the University of Ottawa on its development, and has demonstrated the machine to several institutions, including the University of Virginia, Michigan State University, the University of Toronto and Queens University.Heins has also been raising money for his invention, asking individuals such as former U.S. vice-president Al Gore, Virgin Group founder Richard Branson, Tesla Motors chairman Elon Musk, and Google´s “ReCharge IT” project. Due to his obsession with his machine, he has suffered a failed marriage and lost custody of his two children, and is currently unemployed. He doesn´t believe that his idea is a scientific breakthrough of any kind – he just thinks that it deserves to be investigated. MIT´s Zahn agrees.”To my mind this is unexpected and new, and it´s worth exploring all the possible advantages once you´re convinced it´s a real effect,” says Zahn. “There are an infinite number of induction machines in people´s homes and everywhere around the world. If you could make them more efficient, cumulatively, it could make a big difference.”Source: The Toronto Star via Gizmodo Thane Heins knows the track record of inventors that claim to make breakthroughs in power generation methods, especially when they claim to defy the second law of thermodynamics. Every so often, a (usually untrained) scientist comes along with a machine that supposedly creates more energy than is put in. Every time, the ideas have been rebuked by real scientists. Thane Heins´ “Perepiteia” generator seems to turn magnetic friction into a magnetic boost, causing the motor to accelerate in a positive feedback loop. Citation: Inventor Doesn’t Dare Say ‘Perpetual Motion Machine’ (2008, February 7) retrieved 18 August 2019 from https://phys.org/news/2008-02-inventor-doesnt-perpetual-motion-machine.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.
The ExoHand uses pneumatic actuators on each finger to simulate the range of human finger movement. The actuators move the fingers so that they can be opened and closed. According to Festo, the company that designed ExoHand, nonlinear control algorithms were implemented on a CoDeSys-compliant controller for precise orientation of individual finger joints. (A “CoDeSys-compliant controller” registers and processes the positional and force parameters. It regulates the pressures in cylinders to ensure the correct finger positions and forces.) Further commenting on the design, Heinrich Frontzek, spokesman for Festo at the Hanover show, said that at the back of the glove is a power-booster built in; “That’s done with little air cylinders that give power to every single finger through pressurized air that’s blown into it. Through that, we can reach a doubling of the grip force.”This orthosis can be fitted over the human hand and also over an artificial hand made of silicone. The company foresees ExoGlove in remote-manipulation scenarios too, where handling items poses risks. In this instance, the user’s motions would be emulated by the robotic hand away at a safe distance. As such, it would enable performance of tasks in hazardous areas—whether because of natural disasters, accidents, or within scientific labs.Nonetheless, ExoHand is still only a proof of concept device. Festo, which is a Germany-based engineering firm specializing in automation technologies, notes that ExoHand “offers an intriguing example of what the future of automation looks like.”Looking into that future, Festo draws on experience in industrial training and education programs, and it recognizes an aging work population where retirement is taken in later years than before and where older workers in assembly line jobs could be helped through a device assisting them with tasks demanding endurance or strength or both. The “power amplifier,” as it is also called, might assist any workers in repetitive tasks that easily lead to fatigue. Rehabilitation for stroke patients has also been suggested as a possible application. If connected to a brain-computer interface, it may help stroke patients suffering from paralysis to get a connection between hand and brain.According to Festo, the company has entered into a collaboration with the Tübingen University Hospital as part of the Bionic Learning Network. That network ties in Festo with universities, institutes and development companies working on technology and industrial applications. Hand Robot – a revolution of stroke therapy As a showcase “mechanical exoskeleton,” all the joints and drive units are located outside the hand in the form of the exoskeleton.Fingers can be moved and strength amplified in this device also described as an active manual orthosis with sensitive fingers. The operator’s hand movements are registered and transmitted to the robotic hand in realtime. More information: www.festo.com/cms/en_corp/12713.htm 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 (Phys.org) — ExoHand, a glove designed to double the gripping power of the human hand, was a key attraction at this week’s Hanover Trade Fair. So much for mechanical graspers or mechanical claws: one viewer who watched the demo said it was “un-nerving,” but the glove is designed to do quite the opposite than un-nerve. Once worn on the user’s hand, it provides enhanced dexterity in picking up difficult objects and provides power when needed too. The engineers responsible for ExoHand worked with the objectives to “enhance the strength and endurance of the human hand” as well as to extend the hand’s scope of action. Citation: ExoHand: Glove for hand power is showcased at Hanover fair (w/ video) (2012, April 25) retrieved 18 August 2019 from https://phys.org/news/2012-04-exohand-glove-power-showcased-hanover.html © 2012 Phys.Org
Explore further A team of researchers affiliated with several institutions in Germany has found a second skyrmion phase in a sample of Cu2OSeO3. In their paper published in the journal Nature Physics, the group describes how they found the second phase and the implications of their results. Skyrmions are magnetic anomalies found in some materials. They appear as vortices with magnetic moments that rotate 360 degrees in a plane. They were first discovered approximately 10 years ago, and since that time, have been studied by scientists seeking the basis for a new type of electronic media storage—one that could pack much more data in a smaller space than today’s technology.Skyrmions have been found to exist in a wide variety of materials, the researchers note, but only within specific parameter ranges, such as temperature or field range. Such constraints have serious implications, the researchers also note, because of the impact they can have on their suitability for manufacturing purposes. Until now, such constraints have limited the phase of skyrmions to a single one for any given material, which has restricted their use as a data storage option. In this new effort, the researchers report that they have discovered a second skyrmion phase in one material. This finding, the researchers report, shows that at least some materials can have more than one phase, which greatly improves the outlook for using them as highly dense storage mediums. The new magnetic phase was discovered and studied at the instrument SANS-1 of the research neutron source Heinz Maier-Leibnitz (FRM II). Alfonso Chacon and Dr. Sebastian Mühlbauer adjust the detector. Credit: © Wenzel Schürmann / TUM © 2018 Phys.org a, Intensity patterns of the helical order (green) (a1), conical order (white) (a2), high-temperature skyrmion phase (HT-Skyrmion, orange) (a3), tilted conical order (grey) (a4), and low-temperature skyrmion phase (LT-Skyrmion, red) (a5). The blue-shaded surface and the grey-shaded plane describe the manifold of Q vectors and the scattering plane, respectively. The scattering condition is satisfied at the intersection of both (note the field direction with respect to the scattering plane). b, Magnetic phase diagram observed for ZFC/FH and field parallel to 〈111〉. The helical and the high-temperature skyrmion phase are shown in green and orange shading; the conical state is not colour shaded. c–e, Magnetic phase diagrams observed for ZFC/FH, FC, and HFC/FH, respectively, for field parallel to 〈100〉. A highly hysteretic skyrmion phase emerges for all protocols at low temperatures (red shading), initiated by a pronounced tilting of the conical state (grey shading), where the hatched shading represents coexistence. Credit: (c) Nature Physics (2018). DOI: 10.1038/s41567-018-0184-y Journal information: Nature Physics A single magnetic skyrmion detected at room temperature for the first time A ‘skyrmion lattice’: a lattice of magnetic vortices — so-called skyrmions — exists also at low temperatures in the chiral magnet The arrows represent the direction of the local magnetization. Credit: © Markus Garst / TU Dresden Citation: Second skyrmion phase found in Cu2OSeO3 (2018, July 3) retrieved 18 August 2019 from https://phys.org/news/2018-07-skyrmion-phase-cu2oseo3.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. The group notes that they found the second phase by accident—one of their team members was investigating the properties of Cu2OSeO3 when it was exposed to different temperatures. Further study revealed that the phase could be stabilized at the same time as the previously known first phase, but by another mechanism. They discovered it came to exist at a low temperature in a border area between a conical phase and a field polarized state. All it took was the application of a magnetic field along one axis. The researchers suggest their discovery offers hints that it might be easier to generate skyrmions than has been thought. If so, that might mean researchers could generate them in a wider variety of materials—perhaps some that are good candidates for storing data. But, they also note, more work needs to be done to see if a means exists for switching between the two phases. More information: A. Chacon et al. Observation of two independent skyrmion phases in a chiral magnetic material, Nature Physics (2018). DOI: 10.1038/s41567-018-0184-y AbstractMagnetic materials can host skyrmions, which are topologically non-trivial spin textures. In chiral magnets with cubic lattice symmetry, all previously observed skyrmion phases require thermal fluctuations to become thermodynamically stable in bulk materials, and therefore exist only at relatively high temperature, close to the helimagnetic transition temperature. Other stabilization mechanisms require a lowering of the cubic crystal symmetry. Here, we report the identification of a second skyrmion phase in Cu2OSeO3 at low temperature and in the presence of an applied magnetic field. The new skyrmion phase is thermodynamically disconnected from the well-known, nearly isotropic, high-temperature phase, and exists, in contrast, when the external magnetic field is oriented along the 〈100〉 crystal axis only. Theoretical modelling provides evidence that the stabilization mechanism is given by well-known cubic anisotropy terms, and accounts for an additional observation of metastable helices tilted away from the applied field. The identification of two distinct skyrmion phases in the same material and the generic character of the underlying mechanism suggest a new avenue for the discovery, design and manipulation of topological spin textures.
Getting ready for a casual evening or a corporate event – try bright and bold lip colours that go well with casual, corporate or ethnic wears.Makeup artist Niti Luthra says neon colours like hot pinks, corals, red, orange are very much in trend. ‘Neon shades are perfect for monsoon. Shades like corals, hot pinks and ruby red work well with every outfit. But avoid gloss, as it makes the look stickier,’ said Luthra. Luthra feels a woman should be aware of the best ways to apply a lip colour as it can make or ruin the looks. ‘First, apply a lip balm, then outline your lips with lip pencil and smudge it with a lip smudger. Then fill in the colour,’ she said.The makeup artist also suggests that one should apply long lasting lipsticks, which are non transferable and smudge proof.
The Shift was all about inspiring young students, aspiring entrepreneurs smart and brilliant young adults to make a SHIFT in their thinking, perceptions and ideas about their lives and their future. The main aim of the conference was to nurture young minds molding them to the best of their abilities so that they could make a right shift in their career.The conference was chaired by a mix of some well known speakers like Dr Karan Singh, Anita Roy, Shiv Khemka, Shantanu Moitra, David Back, Sindhu V, Ani Choying Drolma, Maya Krishna Rao, Gaurav Tekriwal, Suniti Mathur, Aisha Chaudhary and others who shared their life changing experiences that made a SHIFT in their life. Also there were special performances by Vineeth Vincent doing beatboxing and B Boying by Shane Mendis and Aastik. The conference was attended by almost three hundred students from Delhi’s top schools between the ages of 14 and 18 years of age group. Also Read – ‘Playing Jojo was emotionally exhausting’Dr. Karan Singh (Former Governor of Jammu & Kashmir) shared his deep insights with the young minds, beautifully combining the concept of cosmos and emphasized on how to awake, arise and move forward on the path of life. Anita Roy, a writer, editor and a free-range thinker shared her views on how to unleash your inner imagination for the budding audience today.Maya Krishna Rao enlightened the audience with her performing art form today. The key message that she tried to convey to the female audience mainly was that, women should work freely in our society. Also Read – Leslie doing new comedy special with NetflixSindhu V. (A Comedian who found her way out of the corporate world) shared a strong key message with the young and budding minds that, ‘No Matter how talented you’re failure will come, embrace it’. She insisted the young minds how to embrace failures and stand back wearing a big smile on their face.Shiv Khemka (Vice-Chairman of SUN Group) shared his views for the audience on how to focus in developing their inner-self alongside their outer personality in their growing years. Ani Choying, is a Buddhist monk who supports her NGO for girl children through her music. She ideally emphasized to develop intellectual capacity as a young mind but without giving a miss to their spiritual development, as well.Shantanu Moitra, the noted music director started his session with a humorous touch to it, by saying always believe in one single phrase, ‘I Don’t Know!! He believes it’s when the whole environment opens up the ways for one. The iconic face also shared short experiences of his own life as how he evolved as a music director today.Vineeth Vincent, professional beat boxer, enlightened the youth mind and souls by introducing and encouraging the concept of choosing and going forward with alternative career options.A truly inspirational young girl, Aisha Chaudhuri, spoke about how she battled a trail of life threatening ailments and stood back in life at a tender age of 17 years. ‘Happiness’ was her key message to the audience. She shared few frames from her own life how she perceived the whole concept of happiness as an attitude and a power tool for herself.
On the first day of the new academic session in Delhi University campus, senior leaders and MLAs of the Aam Aadmi Party (AAP) came out to woo the freshers in support of their student wing Chhatra Yuva Sangharsh Samiti (CYSS); and posed for selfies with them on Monday. The student body of AAP is planning to debut in the DUSU elections this time.The event saw hundreds of students in queue to interact and have a selfie with senior leaders of the party. The party leaders present on the occasion were Delhi state convener Dileep Pandey, Raghav Chaddha, Raghu Ram and Alka Lamba. Also Read – Company director arrested for swindling Rs 345 crore“It was a first of its kind event and the new students were encouraged in this healthy way of welcoming by their seniors. We are thankful to the senior leaders of the party who took their time out to welcome the freshers in DU campus,” Anupam, head of CYSS said. Welcoming the students who gathered in large numbers to attend the selfie event CYSS Secretary Anuj said: “Together we can build up a healthy campus if seniors and juniors develop mutual respect and regard.” Senior party members and spokespersons visited Ramjas College, Hindu College, Miranda College, Sri Venkateshwara College among others. The party further said that the CYSS is set to contest the DU elections and this exercise seems like a foundation for the party’s campaign.Delhi Chief Minister Arvind Kejriwal also took to twitter to wish the new DU students, reminiscing about his college days 30 years back. “I greet all students of Delhi University on their first day in college. Reminds of my student days some 30 years ago!,” Kejriwal tweeted.
Kolkata: As many as 56 public representatives from Jhargram district joined the Trinamool Congress on Saturday among whom 40 had won the Panchayat elections with BJP’s ticket. The rest had won contesting as Independent candidates. The joining of the representatives was announced by party secretary general Partha Chatterjee from the dais of the Martyr’s Day programme of the party at Esplanade.It may be mentioned that all these representatives have won seats in the Gram Panchayats and Panchayat Samitis in the Panchayat polls held in May. The TMC had lost 22 Gram Panchayats and two Panchayat Samitis to the BJP in Jhargram. Also Read – Rain batters Kolkata, cripples normal lifeChatterjee visited Jhargram in June and prepared a report card of the party’s performance after holding a meeting with the district-level leaders.TMC supremo Mamata Banerjee while addressing the extended core committee meeting of the party on June 21 had said that she herself will supervise the party’s work at Jhargram in Jangalmahal.The TMC earlier in July had changed Sabhapatis offive out of eight blocks in the district that included those of Jamboni, Sankrail, Lalgarh, Belpahari and Jhargram Gramin. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedIn a major setback to the Congress, four of its MLAs from Malda and Murshidabad joined the TMC which includes the likes of Samar Mukherjee, Abu Taher Khan, Sabina Yasmin and Akhruzzaman.Mukherjee is an MLA from Ratua Assembly constituency in Malda, Taher Khan is an MLA from Nowda in Murshidabad, Yasmin is from Mothabari constituency in Malda while Akhruzzaman is from Raghunathganj in Murshidabad. Congress Councillor of Ward 140 of the Kolkata Municipal Corporation Abu Mohammad Tarik also joined the TMC. Yasmin said: “It is a bit late but we understood that to develop the district of Malda and the state, we need to hold CM Mamata Banerjee’s hand. This is why we are joining the TMC today.””Nowadays, the BJP is spreading communalism across the nation. We thought TMC is the only one to stop them in Bengal,” Akhruzzaman said.Moinul Hassan of (CPI-M), Mizoram advocate-general Biswajit Deb and Narendra Nath Tiwari, general secretary of Malda Congress were among the others who joined. Expelled CPI(M) leader Ritabrata Banerjee who has recently been appointed as the Chairman of the newly-constituted Tribal Development Commission was seen on stage.Chandan Mitra, a former BJP MP, was also seen on the podium.
Kolkata: On a day BJP President Amit Shah is slated to address a public rally here, West Bengal’s ruling Trinamool Congress would hold rallies in the districts of the state on Saturday to raise its pitch against the publication of the draft of the National Register of Citizens (NRC) in Assam. The Trinamool has decided to leave out the metropolis from the programme, said its Secretary General Partha Chatterjee. Shah would address the rally on Mayo Road in the heart of the city. Also Read – Rain batters Kolkata, cripples normal life Chatterjee said the party would take out a rally in Kolkata on Sunday in protest against the NRC. Alleging that the names of lakhs of Bengali speaking people have been dropped from the NRC draft, Chatterjee demanded that they be included in the register. “We won’t let them make a person refugee in his own country,” he said. Enraged over the Trinamool’s decision, state Bharatiya Janata Party (BJP) President Dilip Ghosh dubbed it as an attempt to foment violence during Shah’s rally and warned that people would give a befitting reply. “The only reason they have taken up this political programme is to prevent our workers and supporters from attending Amit Shah’s rally. They want to foment violence. But I would like to warn them that if they stir up trouble, people will give them a befitting reply,” he said.
A new oral drug whose efficacy in combating breast cancer has been demonstrated alone and in combination with endocrine therapy, also has potential to combat other types of cancer, new research has found.The drug palbociclib targets the rapid division of tumour cells by inhibiting the activity of the enzymes CDK4 and CDK6, which propel cell division and increase in number in most cancers, the study said.“All living cells undergo cell division and palbociclib’s unique capacity to halt the cell division process (also known as the ‘cell cycle’) therefore has potentially broad applicability,” said the study’s lead author Amy Clark, assistant professor at Perelman School of Medicine, University of Pennsylvania in the US. Also Read – ‘Playing Jojo was emotionally exhausting’“Pairing palbociclib with other anti-cancer therapies such as endocrine therapy, chemotherapy, and targeted therapy can create a powerful combinatorial effect with real promise for addressing a variety of cancers,” Clark noted.Assessing 130 relevant publications in the literature, as well as interpreting their own continuing studies, the research team found that in addition to its safety and effectiveness in fighting certain types of breast cancer, early trials of palbociclib have shown promise of effectiveness in cases of lymphoma, sarcoma, and teratoma, tumours that while rare, often afflict younger patients. Also Read – Leslie doing new comedy special with NetflixIn both breast and other cancer trials, palbociclib has been shown to be safe with once-daily dosing, and its main adverse effect is reversible neutropenia, an abnormally low count of neutrophils, a type of white blood cell that helps fight infections. “This drug has minor effects on normal cells other than neutrophils (white blood cells),” study senior author, Peter O’Dwyer, professor at University of Pennsylvania, noted.“In tumours, it can cause shrinkage, or more commonly, arrest of growth. As we discover new functions for the CDK4/6 target of this medicine, we are likely to use it in combinations to make other anti-cancer agents work better,” O’Dwyer said.The study was published in the journal JAMA Oncology.
Kolkata: Mystery shrouds the death of two sisters whose bodies were with their throats slit inside their house at Barbaria village under Bhawanipur police station in Haldia.The incident occurred on Sunday evening. The victims have been identified as Sima Das (15) and her younger sister Pooja Das (10). Sima was a student of class IX, while Pooja was studying in class V. According to the preliminary investigation, police suspect that the victims’ father, Biplab Das, who is suffering from mental depression, might have carried out the murder. He has been absconding since the incident took place. The motive behind the murder is yet to be confirmed by the district police. According to police sources, the two sisters on Sunday evening requested their mother, Sagarika to prepare chicken. As desired by her two daughters, the woman went to a local market to bring meat. When she returned home, she found that the main door of the house to be open. As soon as Sagarika stepped into the house, she found the two girls lying in a pool of blood on the floor. On hearing the screams of the mother, locals rushed to the spot. They took the injured victims to Haldia sub-divisional hospital where the doctors pronounced both of them brought dead. The locals reported the matter to the police station following which police reached the spot. The investigating officers have recovered a knife smeared with blood from inside the room. The officers have also collected some samples from the room. The victims’ mother lodged a specific complaint against her husband. The woman also told police about the accused and his mental depression after he lost his job. The district police have started a detailed probe into the incident. They are yet to confirm the motive behind the murder.