Explore further Experimental evidence adds to the likelihood of the existence of supersolids, an exotic phase of matter According to the model, in order to conserve momentum, the gyroscope attempts to move with the ring by accelerating in the same direction. For clockwise rotations, the gyroscope should accelerate at a rate of about 2.67 x 10-8 times the acceleration of the ring. For counterclockwise rotations, the gyroscope should accelerate only about half that much.This model’s predictions closely match Tajmar’s observations, in which the gyroscope’s acceleration was about 3 x 10-8 times that of the ring for clockwise rotations, and half that for counterclockwise ones. MiHsC does not have any adjustable parameters, so it agrees with the observations without being numerically tuned.McCulloch’s model can also explain why the counterclockwise acceleration is smaller than the clockwise one. As the gyroscope starts to spin with the ring, it changes movement relative to the fixed stars. When in the northern hemisphere (where the experiment was performed), this effect causes a greater acceleration when rotating clockwise. But the model predicts that, when performing the experiment in the southern hemisphere, the gyroscope should accelerate more when rotating counterclockwise than clockwise, while still following the ring’s rotation.“Inertial mass has not been well understood and has been assumed to be the same as gravitational mass (the Equivalence Principle, EP),” McCulloch explained. “If MiHsC is correct, then the EP is only an approximation (the small deviation from the EP due to MiHsC could not have been detected in torsion balance experiments, as I explain in the Discussion of my paper). As a result there may be implications for General Relativity since this assumes the EP is true (and therefore also implications for low-acceleration phenomena like the orbits of stars at the edge of galaxies). Inertia is important practically since it determines the sensitivity of an object’s motion to outside forces.”As McCulloch explains, the Tajmar effect is closely related to another odd observation: the unexplained acceleration of some spacecraft. For instance, when interplanetary probes fly by the (spinning) Earth, some of them undergo unexplained jumps in velocity. In a previous paper, McCulloch showed that the MiHsC model agrees fairly well with these flyby anomalies if a spacecraft’s acceleration is determined relative to all the particles of matter in the spinning Earth. He also showed that the model could explain the Pioneer anomaly: as the two Pioneer spacecraft flew out of the Solar System, they slowed down more than predicted, which can be attributed to the spacecrafts’ small decrease of inertial mass, which increased their acceleration toward the Sun.In the current paper, McCulloch suggests a way to test his model’s validity for explaining the Tajmar effect. His model predicts that reducing the mass of the rotating ring by a factor of 10,000 would result in a decrease of the effect with distance. He hopes that Tajmar’s group will try this test with lighter rings using their existing equipment. If McCulloch’s model holds up, it could potentially prove useful.“Once the cause of something is known, then it may be controllable,” he said. “The control of inertia could be useful. For example: Can we generate Unruh radiation to change the inertial mass of an object and thereby move it? I have discussed this possibility in previous papers (e.g., EPL, 90, 29001).” (PhysOrg.com) — When a spinning laser gyroscope is placed near a super-cooled rotating ring, the gyroscope accelerates a bit in the same direction as the ring, and scientists aren’t sure why. The anomalous acceleration was discovered in 2007 by Martin Tajmar at the Space Propulsion group at the Austrian Institute of Technology in Seibersdorf, Austria. So far, the effect has only been observed in this one laboratory. Since then, scientists have been looking for an explanation for the so-called Tajmar effect. Copyright 2011 PhysOrg.com. All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part without the express written permission of 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. More information: M. E. McCulloch. “The Tajmar effect from quantised inertia.” EPL, 95 (2011) 39002. DOI: 10.1209/0295-5075/95/39002 Citation: Gyroscope’s unexplained acceleration may be due to modified inertia (2011, July 26) retrieved 18 August 2019 from https://phys.org/news/2011-07-gyroscope-unexplained-due-inertia.html In a recent study, Michael McCulloch of the University of Plymouth in the UK has shown that a model that he previously proposed can predict the small unexplained acceleration. His results are published in a recent issue of Europhysics Letters.“[Laser gyroscopes] work by sending light around a circle in both directions, and then measuring the interference of the two opposing light waves,” McCulloch told PhysOrg.com. “When the gyro is spun/accelerated, the interference pattern changes detectably.” Commercial laser gyroscopes that operate this way are currently used in aircraft and missiles for orientation and stabilization.In this study, McCulloch suggests that the gyroscope’s observed acceleration stems from a change in its inertial mass and an attempt to conserve momentum with respect to a supercooled rotating ring. Tajmar’s experiments used rings that were cooled to 5K and made of a variety of materials, such as niobium, aluminum, stainless steel, and TEFLON.McCulloch proposes that the gyroscope’s inertial mass is determined by surrounding Unruh radiation that is modified by a Hubble-scale Casimir effect. In the model, the Unruh radiation is generated by the gyroscope’s acceleration relative to every other mass in the universe, such as the fixed stars in the sky and the cold rotating rings. The Hubble-scale Casimir effect is an effect in quantum field theory that, in this case, prohibits the generation of longer Unruh waves, and so indirectly affects the gyroscope’s inertial mass. McCulloch calls this model “modified inertia due to a Hubble-scale Casimir effect” (MiHsC) or simply “quantized inertia.” When the gyroscope is at room temperature, it is surrounded by short-wavelength Unruh radiation, and its inertial mass is close to its gravitational mass. When its surroundings are cooled, the gyroscope’s inertia becomes more sensitive to the small accelerations of the fixed stars. The wavelengths of the Unruh radiation become longer, and are prohibited by the Hubble-scale Casimir effect, causing the gyroscope’s inertial mass to decrease to less than its gravitational mass. However, when the supercooled ring begins to rotate, the ring’s larger accelerations cause the Unruh waves to shorten so that fewer waves are prohibited, and the gyroscope’s inertial mass increases.
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. Citation: Researchers demonstrate entanglement of two quantum bits inside of a semiconductor (2012, April 13) retrieved 18 August 2019 from https://phys.org/news/2012-04-entanglement-quantum-bits-semiconductor.html Large scale qubit generation for quantum computing © 2012 Phys.Org Explore further (Phys.org) — Research into quantum bits (qubits) for use in a quantum computer has become tied to entanglement, the still mysterious phenomenon whereby subatomic particles exist in an entangled state such that any change to one happens simultaneously to the other, without communication or the passage of time. The reason entanglement of qubits is so important to the future of a quantum computer is because they are able to represent both a “1” and “0” state at the same time and because actions that cause a change in one entangled particle also cause the same change in its partner, theoretically allowing for processing speeds to increase exponentially when adding more entangled qubits. Thus far though, attempts to create entangled particles inside of a semiconductor material have been difficult to measure, and thus verify, due to their short lives. Journal information: Science Now however, a small group of researchers from Harvard University has succeeded in entangling two quantum bits inside of a semiconductor and holding on to them long enough for them to be measured. They describe how they achieved this feat in their paper published in the journal Science.In essence the team overcame the inherent instability of entangled pairs by adding a second electron to the qubits in the semiconducting material which would allow them to be defined by their spin states; doing so they write, added a second level of immunity from decoherence, where the qubit reverts to either a “0” or a “1” after a very short period of time. To cause the actual entanglement, all that was needed was an electrical charge. To make sure that what they thought was happening inside the material truly was, they measured the sample using state tomography.This experiment shows that creating entangled pairs inside of a material such as the semiconductor used, is no more difficult than doing so with such techniques as manipulating calcium atoms in a laser ion trap, the trick though has been to get them to hold their state long enough to be measured, and that’s what this team has achieved. It also demonstrates a process that the team says could be scaled up, a very important element in building a quantum computer. But this of course, just a first step towards building a quantum computer because entangled pairs of qubits would need to be lined up some distance apart from one another to allow for the construction of circuits. Thus far the team has entangled qubits just a few hundred nanometers apart, the goal is to reach at least a micron. More information: Demonstration of Entanglement of Electrostatically Coupled Singlet-Triplet Qubits, Science 13 April 2012: Vol. 336 no. 6078 pp. 202-205. DOI: 10.1126/science.1217692ABSTRACTQuantum computers have the potential to solve certain problems faster than classical computers. To exploit their power, it is necessary to perform interqubit operations and generate entangled states. Spin qubits are a promising candidate for implementing a quantum processor because of their potential for scalability and miniaturization. However, their weak interactions with the environment, which lead to their long coherence times, make interqubit operations challenging. We performed a controlled two-qubit operation between singlet-triplet qubits using a dynamically decoupled sequence that maintains the two-qubit coupling while decoupling each qubit from its fluctuating environment. Using state tomography, we measured the full density matrix of the system and determined the concurrence and the fidelity of the generated state, providing proof of entanglement.
A team of researchers with the Woods Hole Oceanographic Institution has found that coral larvae prefer to set up a new home in a place noisy with other living organisms over a barren soundless site. In their paper published in the journal Royal Society Open Science, the group describes experiments they carried out around reefs in the Caribbean Sea and what they learned from them. Journal information: Royal Society Open Science Explore further © 2018 Science X Network More information: Soundscapes influence the settlement of the common Caribbean coral Porites astreoides irrespective of light conditions, Royal Society Open Science (2018). royalsocietypublishing.org/doi/10.1098/rsos.181358 Settlement experiment deployed at the more degraded, less fish abundant Cocolaba reef in the US Virgin Islands. Credit: Amy Apprill, Woods Hole Oceanographic Institution As humans continue to pump carbon dioxide into the atmosphere, it not only heats up the planet, but causes the oceans to become more acidic. And as the oceans become more acidic, coral reefs have begun dying. For that reason, ocean scientists have been studying them to learn more about their nature, hoping to find a way to save them. One such focus is trying to better understand the factors at play as coral larvae carried by moving water choose a spot to stop and set up new growth sites. Prior research has shown that such larvae are sensitive to temperature, light and chemicals produced by other creatures living in the sea.To find out if sound might also play a role, the researchers placed 18 boxes (half of which had transparent walls) filled with water and coral larvae at three sites ranging from a healthy reef environment to a barren lifeless site. Each site was deemed to be equal in terms of natural light. The biggest difference between them, the team notes, was the amount of noise generated by the creatures already living there. In a bustling reef, there are a wide variety of low-frequency sounds. Barren sites, on the other hand, are usually devoid of all sound except for the high-frequency noise shrimp make.The team left the boxes in place for two and a half days and then checked on them to see if the larvae had found the site suitable for setting up house. They report that 50 percent more larvae had settled into their new homes in the boxes placed in heavily populated, noisy areas. The findings indicate that coral larvae also use sound as part of their decision-making when deciding where to settle. This finding also suggests that the coral larvae could be induced to repopulate barren areas by setting up speakers in the vicinity to blast out noisy reef sounds. Biggest coral reseeding project launches on Great Barrier Reef Citation: Coral larvae found to prefer a noisy environment (2018, December 12) retrieved 18 August 2019 from https://phys.org/news/2018-12-coral-larvae-noisy-environment.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.
Institute of Management Studies, Ghaziabad, organized its Annula Management and Cultural Festival Melange 2013 on 21 and 22 March. The students participated in various competitions testing their knowledge and business acumen.The event was inaugurated by Dr C S Nagpal, Director, IMS with a marathon themed ‘Save Paper, Save Trees’ from Kavi Nagar Ram Lila Ground to the institute premises. Harvansh Singh of MCA won the marathon in which over 200 students participated enthusiastically. Also Read – ‘Playing Jojo was emotionally exhausting’Various academic events were accompanied by co curricular and cultural events held at the Lal Quan Campus, which ended with a fashion show.Dr C S Nagpal in his inaugural speech stressed on the on the importance of managing such events, by the students. Pramod Agarwal, Chairman, IMS Group distributed the prizes to the students. The event was also presided by Treasurer of IMS Society Sanjay Agarwal and Executive Council Member Rakesh Chharia.
Women issues have taken the front seat from a few years. From films, books, social media, to theatre, everything is grappling with the situation of women. New Delhi Players came up with a new production, Henrik Ibsen’s A Doll’s House in Hindi as Gudiya Ghar. It is one of the finest plays written on the subject of women’s rights and has the distinction of being the most performed play internationally perhaps because it’s as close as one could get to the truth of hypocrisy in accepted gender roles in a marriage, in those times and even today. It is designed and directed by Basab Bhattacharya whose last production Sandhya Chhaya was warmly received by all. Also Read – ‘Playing Jojo was emotionally exhausting’For all those who don’t know what this 1879 play is about, here’s a quick synopsis! Nora, the protagonist, and Torvald Helmer are happily married. Torvald has been promoted to bank manager and their money worries are over. But Nora has a secret debt, incurred with good intentions and a forged signature, and with her husband’s new power comes the threat of blackmail. Over three acts, the play culminates when Nora’s lie is exposed and Torvald first blames, then forgives her. But he is abandoned as Nora recognises the truth of her situation. She accuses her husband, and her father before him, of having used her as a doll, and declares herself unfit to be a wife or mother until she has learned to be herself. The ideal wife and mother walks out of the marriage. Also Read – Leslie doing new comedy special with NetflixThe play was put together in one set of a very simple European home, just as live music added to the drama created by a handful of actors. The costumes were English too. But the dialogues were in Hindi. The aim of the play is often to put across the idea, which kind of got lost at some instances when the words got mispronounced and fumbled upon by the Hinglish speaking actors. The protagonist, Priyanka Sharma or Nora held the stage really well with the beautiful smile she has. We loved how she would stay worried at one instance and flip to the meri gilheri, the ever happy woman in front of her husband. The chemistry between the couple was also dominated by Nora, and quite well. Sahil Mittal, who played Torvald, was also a great actor, but it would be great if he could be more confident of the fact that he is a good actor! Supporting actors who played the roles of Linde (Suman), Rank (Sunil Rohatgi) and Krogstad (Animesh Singhal) were better than the lead actors. Our favourite was Krogstad. His strong voice infused life into the character he played. Also, the chemistry between him and Nora was applaudable. It was a well rehearsed and well put up show and we will be looking forward to future productions.
Kolkata: Narayana Multispecialty Hospital, Barasat, in association with Barrackpore Police Commissionerate organised “Safe Drive Save Life” programme at Sodepur in North 24-Parganas.Narayana Multispecialty Hospital, Barasat, also felicitated three civic volunteers of Barrackpore Traffic Police for their outstanding performance in maintaining traffic issues and bringingdown accidents.Sibasis Ghosh, ACP,Traffic, Barrackpore Police Commissionerate, Rajesh Mondal, OC, Central Traffic Guard, Barrackpore, along with senior officers from Ghola, Khardah and New Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedBarrackpore police stations and Barrackpore Police Commissionerate were present at the function.”Safe Drive Save Life” programme was aimed at creating awareness and ensuring road safety among people, especially the youngsters and children to bring down the number of accidents in the region.The hospital also organised a Health Camp for the auto-rickshaw and truck drivers followed by a seminar on Road Safety.Dr Rajiv Pathak, Facility Director, Narayana Multispeciality Hospital, Barasat, said: “Safe driving is an essential part of road safety.”Every day, so many people lose lives due to irresponsible and reckless driving. If we don’t follow the rules, our life can be in danger.”So, for this purpose of ensuring road safety by sensitising the concept of safe driving among people, especially the youngsters, we have taken-up this initiative.”
The first day is always so special for the new college kids that it remains intact for life as a good memory. But many do face problems with the selection of clothes for their first impression and that too under budget. Keeping a few things in place like playing around with basic cotton kurta or jazzing up with jewellery can do the trick, say experts. Here are some tips on how one can look picture perfect on the first day of their college under budget.Play it chic: It is very important to choose the right collection for your college days, as mix and match works wonders. Carry a scarf always in your bag as you can match it with any of your clothes. The scarves won’t cost you more than 100 bucks and you can team it with any of your plain T-shirts which you no more feel like wearing. Spend the rest of the money on a rugged jeans and ballerinas.That cotton kurta: The basic cotton kurta will not cost you more than Rs. 500, but make sure you buy a kurta which you can wear like a dress as well. Team up your dress or kurta with funky jewellery and a pair of flats and you are soughed.Slogan Hogan: The jazzed up look for your freshers or a party night with your new friends can be completed with the trendy slogan tees which are available both online and offline. These T-shirts be it a crop top or a short tee with jeans won’t cost you more than Rs 500-600 and you can team them with your favourite black jeggings and palazzos.Be the Maxi queen: Winning the Miss freshers, or swirling in those beautiful maxi dresses is very much affordable at a price of Rs 500-700. Teaming the same with your comfortable sandals and donning a beautiful scarf around your neck, you can just make that simple maxi dress look more stylish and happening.Glam up with right jewellery: Opt for boho chokers which will cost you about Rs 150 and you can pair it with every piece of cloth you wear. The second-best thing are bead earrings which go well with all attires and will only cost you about Rs 50.
Make your wardrobe winter ready with some of the smart choices that will never go out of trend. Stylists are sharing some tips on winter outfits to stir your wardrobe.-Tucked in a sweater: This winter you can flaunt your fit and toned tummy even through sweaters. Keeping the fitness factor aside, this trend is quite adorable. The tucked-in and belted sweater style give a more modern and a clean look. You can tuck them into jeans, skirts, trousers or even under a skinny belt. Also Read – Add new books to your shelf-Pagoda shoulders: Everybody knows that shoulder pads are making a huge comeback this year. But another trend brewing within is that of pagoda shoulders. This style had fallen out of fashion, but now they are making a resurgence. Pagoda Shoulder has a convex line with an elevated outer edge. We have seen them on sweaters, dresses, jackets and dresses, basically, everywhere.-Leather on leather: After the success of denim on denim, now the fashion trends are all about leather on leather. Let go of pairing a leather jacket with jeans or a leather skirt with a satin top. This fall-winter fashion, wearing head-to-toe leather outfits will be in vogue. You can even mix colours, like pairing black with burgundy or brown. Also Read – Over 2 hours screen time daily will make your kids impulsive-Animal print: This winter there is no escaping from an animal-inspired pattern. The leopard print has always been the hero and hailed by many. The brown sporty patterns are considered to be very versatile. Those who want more of ‘wear it whole day piece’, then invest in a leopard print midi skirt and you will not regret it. -Shades of brown: Despite being shunned by many for some years, this Fall-Winter season, Brown has become the most dominant shade. From trench coat to jumpsuit to zip coat, all styles have gone wild for brown in all its hues. You can simply layer a shirt or jacket over a fine black roll-neck and you’ve nailed.-New way of layering: There are some pretty interesting layering ideas going on in the fashion industry. Few simple styles can be incorporated in our daily life like a new way to fasten your old scarf and trench coat together. For a more elegant yet a chic look you can layer a wool coat on top of a denim jacket.-Scarf prints: The trend of turning a classic silk foulards into slinky dresses and tops has picked up really fast. You no longer need to tie down a scarf to your neck, the trend is making its way to shirts, skirts and dress.
Kolkata: In connection with the LPG dealership scam case, BJP general secretary of Murshidabad Town Soumen Mondal has been arrested on Friday. He will be taken into police custody for interrogation to find out who are the other connected individuals with the irregularity.Earlier during September, 2018, a BJP leader from Kolkata, identified as Ranjeet Majumdar, was arrested for allegedly cheating people by assuring them of providing LPG dealership. According to sources, after interrogating Majumdar, several more names cropped up in connection with the case. Following the arrest of Majumdar, the police were checking the documents which were provided by the complainant and those that were seized during the investigation. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: MamataAfter a prolonged probe, the investigating officers came to know that apart from Majumdar, Mondal also received a lot of money by promising LPG dealerships in Murshidabad. It is also alleged that few of the state-level leaders also received a part of the sum as commission. Mainly, Mondal was allegedly engaged in collecting the money from Murshidabad district and send it to the BJP leaders who were conducting the scam. Significantly, Chief Minister Mamata Banerjee during the Martyrs’ Day meeting on July 21 slammed the BJP regarding the ‘Ujala’ project irregularity. The fraud came to light on August 3 last year, after Ashok Sarkar, former BJP leader from Salt Lake, filed a complaint with the Jorasanko police station. Also Read – Lightning kills 8, injures 16 in stateAccording to the complaint, Majumdar was aware of the advertisement which was yet to be published, seeking LPG dealership. He and some other BJP leaders collected money and committed to provide LPG dealership to several BJP and RSS workers. According to the complaint lodged, several correspondences were made between BJP leaders for recommending the names for the allocation of LPG dealership for the year 2017-18. Subsequently, BJP and RSS workers were lured into the trap with an intention to cheat. Sarkar also alleged that crores of rupees were collected from different people from all across the state after assuring them the LPG dealership. It was also alleged that the final list of 235 names was being sent to a senior RSS leader for approval which contains a 17 digit code of different oil companies. However, the BJP leadership considered the arrest as a conspiracy. But according to the police, several clues that have been found which have led to Mondal’s arrest.