Month: August 2019

New multitouch screen technology developed w Video

New multitouch screen technology developed w Video

first_img More information: Touchco: touchco.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 team, led by Ken Perlin and Ilya Rosenberg from the Media Research Laboratory, formed their company Touchco to develop IFSR (interpolating force-sensitive resistance) technology, which uses resistors sensitive to the force or pressure applied to touch points. This, along with scanning technology and positional interpolation, allows for (theoretically) unlimited simultaneous touch inputs (in contrast to other touch technologies such as the capacitive touch screen used by iPhone, which can track limited touch points). It has low power requirements and is inexpensive, since Touchco expects to sell the screen material at $10 per square foot. The technology is easily scalable for use in small or large devices. © 2010 PhysOrg.com The touch pads consist of layers of FSR ink sandwiched between opaque or transparent sheets of plastic onto which conductive wires are printed. The total thickness is only 0.25 mm. When pressure is applied to an FSR sensor a current flows from the wires in one layer to the wires in the other layer, and the pressure applied is determined by the amount of electric current flowing from layer to layer. Arranging sensors in a grid would have been expensive and impractical, so Touchco developed scanners to measure the touches and determine their positions. Resolution is 254 µm (100 dpi), but this can be increased by decreasing the wire spacing.Touchco has already begun selling developer kits to device manufacturers and expects to see IFSR technology finding many applications during 2010. Citation: New multi-touch screen technology developed (w/ Video) (2010, January 12) retrieved 18 August 2019 from https://phys.org/news/2010-01-multi-touch-screen-technology-video.htmlcenter_img Perlin said that the IFSR technology is likely to appear in a new range of e-readers later this year, and will also be used in laptops or notebooks, and new types of musical instruments. In computer applications the touch pads allow the user to control the cursor with a light touch, but to select and manipulate objects when more pressure is applied. The company has also been collaborating with Disney to develop a digital sketchbook that will use sensitive pressure sensors capable of differentiating between the touch of a hand, a pencil, brush or eraser. Drawing pictures is just one of many possible applications of the technology. Industry’s First Conductive Polymer Film Touch Panels from Fujitsu (PhysOrg.com) — Scientists from New York University have formed a company to bring flexible multi-touch screens using a new technology to a range of devices, from e-readers to musical instruments. The new touch screens respond to all kinds of objects, as well as fingers and hands. Explore furtherlast_img read more

The Joule Thief uses cans as a battery power

The Joule Thief uses cans as a battery power

first_img Genome Engineering Could Provide New Method of Creating Diesel Culhane is taking his innovation to Nepal first. The system, which would rely on the aluminum cans left by excess tourist activity. The plans involve setting up both solar and biogas plants that will run on this technology. The cans initially will be filled with water and wood ash, which allows it to collect potassium hydroxide. Over time the system will use simple electrodes to set up batteries.Joule Thief video. More information: Explore further (PhysOrg.com) — Thanks to a child’s toy and the mind of T.H Culhane visitors to the explorer’s symposium at the National Geographic headquarters got to take a look at how the world of aluminum cans we use every day can be used to power batteries. The project began, as many things do, with a video on YouTube. In this video a child uses aluminum cans to make a very small and simple battery. 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.center_img via National Geographic Citation: The Joule Thief uses cans as a battery power (2011, June 21) retrieved 18 August 2019 from https://phys.org/news/2011-06-joule-thief-cans-battery-power.html © 2010 PhysOrg.com This type of battery, known by its nickname as a joule thief, is being used by T.H Culhane to create a plan to bring more inexpensive energy to the rural parts of the world. The joule thief can be used with any cold beverage holder, when it is done for a child’s experiment. The joule thief uses a weak charge in order to create and then convert the power from the can into real power that can be used in a variety of different applications. In this case the power was used to convert a dead AA battery. That battery was able to yields 1.2 volts of power that is then sent to a 3 volt LED light. It is able to power the light with its energy savings. last_img read more

Study suggests people less likely to fact check news when in company

Study suggests people less likely to fact check news when in company

first_img(Phys.org)—A trio of researchers with Columbia University has conducted a series of experiments regarding how much effort people are willing to exert in fact-checking news stories. In their paper published in Proceedings of the National Academy of Sciences, Youjung Jun, Rachel Meng and Gita Venkataramani Johar describe the experiments they carried out and what they found as a result. Explore further More information: Youjung Jun et al. Perceived social presence reduces fact-checking, Proceedings of the National Academy of Sciences (2017). DOI: 10.1073/pnas.1700175114AbstractToday’s media landscape affords people access to richer information than ever before, with many individuals opting to consume content through social channels rather than traditional news sources. Although people frequent social platforms for a variety of reasons, we understand little about the consequences of encountering new information in these contexts, particularly with respect to how content is scrutinized. This research tests how perceiving the presence of others (as on social media platforms) affects the way that individuals evaluate information—in particular, the extent to which they verify ambiguous claims. Eight experiments using incentivized real effort tasks found that people are less likely to fact-check statements when they feel that they are evaluating them in the presence of others compared with when they are evaluating them alone. Inducing vigilance immediately before evaluation increased fact-checking under social settings. The topic of fake news has been in the news a lot of late partially due to its possible impact on the last U.S. presidential election—since that time, public figures such as Mark Zuckerberg, CEO of Facebook, have vowed to cut down or eliminate fake news from social media. Fake news persists because it is used as click bait; unfortunately, it can have unintended consequences, such as people believing the information they find in such articles—this may be more likely to occur, the authors of this new research have found, if the reader is with other people.In practice, it should be easy to avoid falling prey to fake news—upon reading something that may not sound right, all a person has to do is type a few words and run a Google search. But people do not always behave in logical ways. In this new effort, the research trio sought to better understand fact checking by conducting eight experiments designed to determine under which circumstances people are more or less likely to fact check a news article they have just read. The researchers enlisted the assistance of 200 people, all near 36 years old. In the experiments, the volunteers were asked to read a news article and then to perform some tasks related to their feelings regarding the accuracy of the article.The researchers report that across all eight experiments, they found the volunteers were less likely to do fact checking when they were in the presence of other people—even if it was indirect, such as on social media. The experiments did not reveal why the people acted as they did, but the researchers suggest it was likely due to one of three things: something they call social loafing, which means the exertion of less effort on a task in the presence of other people; people unwilling to go against social norms; or because of muted responses due to crowd vigilance. Credit: CC0 Public Domain Citation: Study suggests people less likely to fact check news when in company of other people (2017, May 23) retrieved 18 August 2019 from https://phys.org/news/2017-05-people-fact-news-company.htmlcenter_img Google adds ‘fact check’ to global search results © 2017 Phys.org Journal information: Proceedings of the National Academy of Sciences 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.last_img read more

Disordered skyrmion phase stabilized by magnetic frustration in a chiral magnet

Disordered skyrmion phase stabilized by magnetic frustration in a chiral magnet

first_img More information: Kosuke Karube et al. Disordered skyrmion phase stabilized by magnetic frustration in a chiral magnet, Science Advances (2018). DOI: 10.1126/sciadv.aar7043 Temperature-field phase diagrams in Co7Zn7Mn6. The field-decreasing runs from the induced ferromagnetic region down to the zero-field cooling (ZFC) depicted. The phase boundaries of conventional SkX phases are seen in green circles. The equilibrium phase, which is the metastable state in the field decreasing processes of novel DSKs is indicated in the red region. Credit: Science Advances, doi: 10.1126/sciadv.aar7043 Journal information: Science Advances In the field decreasing process that was subsequently observed, the new phase was quenched as a metastable state down to zero field cooling (ZFC). The findings in the study were substantiated by summarizing the relation between the real-space magnetic structures with the corresponding SANS patterns recorded in the study.Real-space observations were conducted with Lorentz transmission electron microscopy (LTEM) measurements. In the field-increasing run at 135 K from zero field cooling (ZFC), the transition from a helical state (H) to a conventional SkX state was observed. At 50 K, a disordered helical state was observed, and in contrast at a magnetic field of 0.2 T, several closed, dot-like objects assigned to skyrmions were clearly observed. The observation of DSKs in the LTEM images was explained as an inherent feature of the material, consistent with the corresponding SANS patterns observed in the study. Explore further Skyrmions can be typically observed by small angle neuron scattering (SANS) and with microscopy techniques in real space. In chiral magnets, the effect of DMI gradually twists ferromagnetically coupled moments to form a helical ground state. In the study, the authors reported similar behaviour for a spin glass phase symptomatic of frustrated magnetism existing at low temperatures across a wide range of Mn compositions for Co-Zn-Mn alloys. The glass phase invaded the helical ground state to display typical metal-insulator transition indicating the microscopic co-existence of the two phases. To investigate the mechanistic influence of frustrated exchange interactions on the helical and topological spin structures, the authors focused on Co7Zn7Mn6 with Tc ~ 160 K and spin glass transition temperature Tg ~ 30 K. In the study, further measurements were performed of SANS, magnetization, alternate current (ac) magnetic field susceptibility and Lorentz transmission electron microscopy (LTEM) of the material.The scientists summarized their findings in a phase diagram to show two distinct, equilibrium skyrmion phases. A conventional SkX phase slightly below Tc and a novel disordered skyrmion phase (DSK) phase near Tg. In classical mechanics, particles are represented by point masses or rigid bodies, and in field theory by wave-like excitations or vibrations. Magnetic skyrmions are small, vortex-like spin textures of topological origin found in a variety of magnetic materials, and characterized by long lifetime. They were first discovered in 2009. In chiral magnets, skyrmions and skyrmion crystals (SkX) show unique physical properties due to their stability at ultralow current density. Explaining the stability of such particles is nontrivial; however, the particles can be described as topologically protected against small perturbations and decay. These properties can be advantageous for potential applications of skyrmions as information carriers in magnetic memories for storage and processing. Skyrmions are formed in magnetic systems via a variety of mechanisms, some of which work together. © 2018 Phys.org The mechanisms include the Dzyaloshinskii-Moriya interaction (DMI), frustrated exchange interaction, long-ranged magnetic dipolar interactions and four-spin exchange interactions, characterized by the diameter of the resulting skyrmion structure. For instance, chiral magnets with an antisymmetric interaction between the spins, known as the DMI, can form a triangular-lattice skyrmion crystal (SkX). Specifically, a finite DMI can arise due to broken inversion symmetry at interfaces of thin film layers or in bulk materials with chiral or polar structures. In metallic systems, the existence of a chiral interaction was first demonstrated for disordered alloys. Skyrmions based on DMI were recently observed in Co-Zn-Mn alloys with the β-Mn-type chiral cubic structure, where the unit cell contains 20 atoms distributed across two inequivalent crystallographic sites. Now writing in Science Advances, Kosuke Karube and co-workers report the intermediate composition system Co7Zn7Mn6 as a unique host of two disconnected, topological skyrmion phases. Second skyrmion phase found in Cu2OSeO3 According to the report, one phase is a conventional skyrmion crystal stabilized by thermal fluctuations and restricted to exist just below the magnetic transition temperature (Tc), whereas the second phase is a novel three-dimensionally disordered skyrmion crystal phase that is stable well below Tc. The stability of this new disordered skyrmion phase was attributed to a cooperative interplay between the chiral magnetism with the DMI and the frustrated magnetism inherent to the β-Mn structure. 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. LTEM measurement on a thin-plate sample of Co7Zn7Mn6. A) underfocused LTEM images at 135 K and at 0 T and 0.05 T. B) Underfocused LTEM images at selected fields at 50 K and at selected temperatures in the subsequent zero-field warming (ZFW) process. For the image at 50 K and 0.2 T (highlighted in blue) the corresponding ‘overfocused’ image is seen at the right-hand side. The following notations were included; H- helical, SkX – Skyrmion crystal, DH – disordered helical, DSK – disordered skyrmion, F- ferrimagnetic, DSK + DH – mixed state. The observation of DSKs at 50 K was explained as an inherent feature of the material. Credit: Science Advances, doi: 10.1126/sciadv.aar7043. Temperature-field phase diagrams in Co7Zn7Mn6. Magnetic-field (T-H) phase diagrams in Co7Zn7Mn6 determined by ac susceptibility and SANS measurements. Field-increasing runs after zero-field cooling (ZFC) depicted. The conventional SkX field is indicated by green circles. The equilibrium phase of DSKs is indicated in the red region. Credit: Science Advances, doi: 10.1126/sciadv.aar7043 The study collectively investigated the possible origin of the novel DSK phase, since skyrmion phases are generally stabilized by quantum critical or thermal fluctuations. Two types of fluctuations were found in the present study to promote topological phase stability in Co7Zn7Mn6, including thermal fluctuations and frustration-induced fluctuations. In this way, the skyrmion governed by DMI demonstrated a novel mechanism for topological stability in Co7Zn7Mn6. Citation: Disordered skyrmion phase stabilized by magnetic frustration in a chiral magnet (2018, September 27) retrieved 18 August 2019 from https://phys.org/news/2018-09-disordered-skyrmion-phase-stabilized-magnetic.html Zero-field magnetic phase diagram with temperature (T) and Mn composition (x) connecting Co10Zn10 and β-Mn according to (Co0.5Zn0.5)20−xMnx. A spin glass phase is found to exist at low temperatures and across a wide-range of x. For 3< x <7, the spin glass phase invades the helical phase, displaying a microscopic existence of the two states. The diagram inset shows a schematic of a β-Mn-type structure viewed along the [111] axis. T is temperature and x is the Mn composition. Credit: Science Advances, doi: 10.1126/sciadv.aar7043last_img read more

Mamata lauds performances of Indian sportspersons at CWG

Mamata lauds performances of Indian sportspersons at CWG

first_imgKolkata: West Bengal Chief Minister Mamata Banerjee today greeted sportspersons, who have made the country proud with their performances at the ongoing Commonwealth Games at Gold Coast in Australia. The CM also made a special mention of the women squad for their achievements at the multi-sport event.”Since the Commonwealth Games #CWG2018 started, our sports persons have been doing very well. Keep winning. It is good that so many girls are winning for India. Jai Hind,” she tweeted this morning. Also Read – Heavy rain hits traffic, flightsFrom weightlifting to table tennis and hockey, women have been putting up commendable performances at the 21st edition of the Commonwealth Games.Teenaged Manu Bhaker grabbed the 10m air pistol gold medal and 22-year-old Punam Yadav picked up the yellow metal in a weightlifting event.The women’s table tennis team scripted history by clinching gold for the first time with a 3-1 victory over Singapore.This morning, ace shooter Jitu Rai claimed the gold medal in men’s 10m air pistol event by setting up a games record while compatriot Om Prakash Mitharval bagged a bronze.India currently occupies the third position in the CWG medals tally, having claimed eight gold, four silver and five bronze medals so far.last_img read more

Man climbs cellphone tower in Birbhum sends cops in a tizzy

Man climbs cellphone tower in Birbhum sends cops in a tizzy

first_imgKolkata: Police were sent into a tizzy when a middle-aged man climbed up a mobile phone tower at Mohammadbazar in Birbhum on Wednesday morning.Police said that local people found the man at the top of the 100 metre tall tower and asked him to come down.Having failed to convince him to come down, they informed the police. Policemen from the local police station went to the spot and initially tried to bring him down.But the person was not at all ready to listen to the police and continued making different gestures at people. Police then sought help of the state Fire and Emergency Services department. Fire fighters reached the spot and initiated work to rescue the man. Also Read – Heavy rain hits traffic, flightsThe man had threatened to jump when he found firefighters trying to climb up the tower. The firefighters took around five hours to bring the person down.Hundreds of people had gathered in the area, which made the task more difficult for the firefighters. The area was finally cordoned off and the firefighters somehow managed to convince him to come down from the tower. The police have also taken steps to provide necessary treatment to the man.This is the first time when such an incident has taken place in the area and the police have asked the concerned authorities to take necessary steps so that people from outside cannot enter the area where the tower is situated, without permission.last_img read more

4 persons including 3 foreigners held for duping retired official of more

4 persons including 3 foreigners held for duping retired official of more

first_imgKolkata: The Cyber Crime Police station of Bidhannagar Commissionerate has arrested four persons including three foreign nationals in connection with cheating a retired Central government employee, residing in Rajarhat Road under Baguiati police station area, to the tune of more than Rs 18 lakh.The persons were arrested from Bengaluru on the basis of a complaint by one Bhaskar Ghosh that was lodged with Baguiati police station on May 19.According to police sources, Ghosh had accepted the friend request of a lady with profile name of Anne Elizabeth on April 6. After few days, she gave a business proposal of supplying herbal seeds available in India to the US. She stated that these seeds are used for manufacturing life-saving medicines in the US. Also Read – Heavy rain hits traffic, flightsGhosh was then introduced to a lady who disclosed her name as Vinita Sharma and accordingly the former was convinced that his business will not only be of a noble cause but at the same time would fetch him good profit as well. During the entire interaction, he was quite convinced and he landed up paying Rs 18,32,500 in between end of April and middle of May 2018 on two different bank accounts as provided by Sharma. Once the payment was made, it was promised that a person would come and collect the herbal seed samples from his residence and pay him much more than what he has deposited. But no one even picked up the phone. Ghosh realised that he had been cheated. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedThe four persons arrested in this connection are Steve Gomes, originally hailing from Caranto City in Guinea, Kachi Aguguo, alias Kachi of Lagos Street, Nigeria, Jhonson Uhunamoure alias Jhon (34) of Siloco Road, Ghana and Sanchita Dey, alias Vinita Sharma (30) of KR Puram, Bangalore. The entire racket was based in Bangalore at the time of the operation.The police has also seized a laptop, a passport, two passbooks and two ATM cards in connection with the bank accounts in which the money had been deposited.last_img read more

August 20 meeting will sort minimum wage issue Ghatak

August 20 meeting will sort minimum wage issue Ghatak

first_imgDarjeeling: State Labour minister Moloy Ghatak on Thursday proposed hike in the wages of tea garden workers and stated that the Minimum Wage Advisory Committee meeting on August 20 in Kolkata will shape the future of the minimum wage issue.On Thursday, a bipartite meeting took place between the government and tea garden management (representing the proprietors), at Uttar Bongo Marwari Bhawan in Siliguri. Ghatak was present in the meeting.Later, talking to media persons, Ghatak stated: “since last year, the second hike installment of Rs 10 is due. Hence we have decided to increase the present daily wage of Rs 159 to Rs 169 from September. This will be followed by annual bonus. From October, we have proposed that daily wages be hiked to Rs 176.” Also Read – Rain batters Kolkata, cripples normal lifeWhen questioned on the fate of minimum wages, the minister stated that it would be decided in the tripartite meeting of the Minimum Wage Advisory Committee on August 20 in Kolkata.”If the meeting manages to reach a consensus, then minimum wage will be fixed at that amount,” added the minister. He stated that Thursday’s meeting was a review meeting on the present condition of tea gardens and how things can be improved.Reacting to questions put forward by media persons regarding the proposed wage hike, Arijit Raha of the Consultative Committee of Plantation Associations (CCPA) stated: “We are not in a position to. However the government will take decisions only after tripartite talks in Kolkata on August 20.” Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedRaha further claimed that the tea industry is facing grave problems at present. “We have apprised the state government that the economic position of the tea industry is extremely weak at present. At this juncture, we are finding it extremely difficult to sustain the present wage of Rs 159. We have requested the government to take cognizance of the huge cost pressure that the industry is facing and to mitigate some of these costs,” stated Raha.He also appealed to the government to look into the productivity issues, so that it increases. “This will enable us to shoulder the increases that are to come in future. We appreciate that minimum wage is part of a legislative change. We understand that the process has to be completed and we are extending all cooperation,” added Raha.He also appealed to the tea unions not to indulge in any form of bandhs which would further aggravate the situation for both the gardens and the workers.Incidentally, the Joint Forum of Tea Trade Unions had clamped a 3 day bandh in tea gardens in the plains on August 7, 8 and 9.last_img read more

Going organic Health tips to stay fit

Going organic Health tips to stay fit

first_imgAditi Gokhale and Aman Singhal, experts from All Things Organic, have shared organic products for a kitchen shelf that would help in staying healthy and fit.* Seasonal Organic fruits and vegetables: Nothing can beat the freshness of seasonal organic fruits and vegetables. These are grown without the use of any harmful chemicals and tastes a lot better than the conventional fruits and vegetables.* Himalayan pink salt: Regular, commercial table salt is completely stripped out of the majority of its minerals with the exception of sodium chloride. It is then bleached, cleaned with chemicals, and heated at extremely high temperatures.  Also Read – ‘Playing Jojo was emotionally exhausting’The iodine that is added to table salt is almost synthetic, which is difficult for our bodies to absorb but the Himalayan pink salt is the purest salt in the world from the Sindh Area. Pink Salt can be added in cooking or sprinkled on salads without worrying about high blood pressure.* Peanut butter made Organic Peanut butter is not just for school lunches but also good for your health. The high protein with its healthy oils helps you with weight loss, diabetes and even Alzheimer’s disease. Also Read – Leslie doing new comedy special with Netflix* Garlic pickle made from organic Ingredients: Garlic, which is known for its antibacterial and anti-fungal properties, proves to be a natural anti-oxidant that boosts your immune system besides being an effective curative for circulatory and lung ailments. Home-grown and hand-made traditional garlic pickle is the best way to add a powerful medicinal herb to your daily diet.*Organic honey: Daily consumption of honey ensures good health. Organic honey is filtered and tested for purity and packed in its pure and uncontaminated form without the addition of any artificial preservatives and sugar. It is useful for treating respiratory problems, cough, cold and other allergies.Therefore, go organic to improve your health.last_img read more

Govt to help Bankura farmers take up alternate crop cultivation

Govt to help Bankura farmers take up alternate crop cultivation

first_imgKolkata: The state government has made plans to help farmers in taking up cultivation of pulses, oil seeds and mustard in 196 mouzas of Bankura district, where paddy cultivation has suffered due to inadequate rainfall.”The rainfall has not been upto the mark, which has affected paddy cultivation in parts of Bankura district. Farmers have cultivated paddy but it could not yield edible rice. So, we are encouraging alternative cultivation of those crops which can be grown with the use of less water,” said Subhasis Batabyal, vice-chairman of West Bengal Agro Industries Corporation Ltd. Also Read – Rain batters Kolkata, cripples normal lifeThe state government and district officials have identified areas located close to waterbodies for smooth cultivation of pulses, oil seeds and mustard. The farmers are also being encouraged to cultivate different varieties of saag, like palang and others. The advantage of cultivating saag lies in the fact that it can be grown using less water and also at a rapid pace. The winter has already set in and saag is very much in demand,” Batabyal added. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedAccording to an official in the district administration, the 196 mouzas that have been affected, include Gangajalghati, Chatna, Indpur, Bankura I, Bankura II, Mejia, Saltora and parts of Khatra. The state Agriculture and Horticulture department is extending all possible help to the farmers by distributing seeds among them and also providing necessary advice for cultivation. Fertiliser is also being made available for the benefit of the farmers. “Chief Minister Mamata Banerjee has always laid special emphasis on the improvement of income of farmers and various steps are being taken from time-to-time in this regard,” a senior official of the state Agriculture department said. Necessary instructions have been given to the concerned officers of the district level, to arrange facilities for power connections for submersible and mini-pumps that will be used to channel water from the waterbodies into the agricultural fields.last_img read more