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Copiapó, Chile mining accident: in depth

Wednesday, October 13, 2010

The rescue of the Chilean miners trapped in the San José Mine in Copiapó, codenamed Operación San Lorenzo (San Lorenzo Operation), began on Tuesday night, at around 20:00 local time (23:00 UTC).

Florencio Ávalos was the first miner to be rescued, at 00:12 local time (03:12 UTC) on Wednesday. He was wearing a shirt signed by all his fellow miners. “The first miner is already with us. We saw it all, him hugging his wife Monica and his son Byron,” said President Piñera shortly after the first rescue. “We still have a long journey.”

“This will be recorded on every single Chilean heart forever,” Piñera added. “I hope the miners’ hope stay with us, just like the [February] earthquake victims’ [hope] and what the earthquake took off. We know that the disasters unite us all.”

All the 33 miners were rescued. The last miner, Luis Urzúa, was rescued at 21:55 Chile time (00:55 UTC). “It is a pleasure to be Chilean, [I’m] proud,” said Luis Urzúa to President Piñera. “In honour of the miners, their families, the rescuers […] let’s sing our national anthem. Viva Chile Mierda!,” said Piñera. Urzúa thanked Mining Minister Golborne and the First Lady Cecilia Morel for “fighting for their lives.” “I’m proud of my fellow miners,” Urzúa added.

Six rescuers, including a miner and a paramedic, descended to the miners’ shelter using the Fénix 3 capsule which was specially constructed for the rescue. They performed check-ups and talk with the miners before taking them back to the surface. The rescuers still don’t leave the mine.

The Fénix 3 capsules are 3.95 metres in height and weigh about 460 kilograms. They have an armour, an oxygen tube and a microphone. The occupants helmets contain an intercom to keep them in contact with the rescue team on the surface.

President of Chile Piñera assisted to the rescue. Bolivian President Evo Morales could not attend Carlos Mamani’s rescue. Mamani is the only Bolivian miner in the group.

A mass for the miners was conducted at 18:00 local time (21:00 UTC). The rescue takes between 15 and 20 minutes for each miner.

On Tuesday, Mayor of Copiapó Maglio Cicardini announced that the municipal schools in the city will have no classes this Wednesday “to transform the rescue of the Atacama’s 33 in a familiar meeting,” Radio Cooperativa reported.

“The miners will be taken to the Copiapó Regional Hospital for medical checkup, where they will have to stay for 48 hours,” Health Minister Mañalich said to Televisión Nacional de Chile.

Celebrations are taking place in several Chilean cities. In Santiago de Chile, people gathered in one of the most important points of the city, Plaza Italia. In Pichilemu, tens of cars are passing over its most important streets. In Copiapó, people gathered in its main square to assist a massive concert.

On August 5, 33 miners were trapped more than 700 meters (2,300 ft) underground, in the San José copper–gold mine, located about 40 kilometers north of Copiapó, Chile.

The youngest trapped miner is 19 years old, and the oldest is 63. There were several rescue attempts before reaching the miners’ shelter on August 22. The National Emergencies Office of Chile (ONEMI) released a list of the trapped miners on August 6, which included Franklin Lobos Ramírez, a retired footballer.

Chile is the worlds top producer of copper, according to The Economist. The San José Mine is owned by the San Esteban Mining Company (Empresa Minera San Esteban). The mine was closed down in 2007, after relatives of a miner who had died sued the company executives, but the mine was re–opened in 2008.

It was originally estimated that “it would take three to four months to complete the rescue of the trapped miners”. There were three plans to reach the miners: “Plan A” using a Strata 950 drill, “Plan B” using a Schramm T130XD drill, and “Plan C” using a RIG-422 drill. The first to reach the miners was “Plan B”, early on Saturday 9.

The last step of their rescue, announced by Health Minister Jaime Mañalich, was originally due to begin on Tuesday. Laurence Golborne, Minery Minister said “If it is possible, and the cement sets before and we don’t have any impediments to doing it, it would be wonderful,” in a press conference on Monday. The men will be extracted in a steel rescue capsule 54 cm (21 inches) in diameter.

On September 4, Chilean filmmaker Rodrigo Ortúzar announced plans to film a movie about the accident, called “Los 33” (“The 33”). The film will be released in 2011.

One miner is Bolivian, and the other 32 are Chilean.

Raúl Bustos, 40 years old, is an hydraulics engineer. He left his job in Talcahuano after the February 27 earthquake to work in the mine.

Daniel Herrera, 27 years old, is a lorry driver. He has acted as paramedic assistant in the mine. He said to La Tercera “the miners were unhappy with the psychologist in the rescue team.”

Claudio Acuña, miner, is fan of the Colo-Colo football club. The BBC reports he is aged 56, but El Comercio says he is 44.

Pedro Cortez is aged 24. He joined the mine with his friend Carlos Bugueño. Cortez is an electrician, and lost a finger in the mine a year ago.

File:Juan Aguilar with President Piñera.jpg

A native of Los Lagos, Juan Aguilar is 49 years old. Aguilar is married to Cristy Coronado, according to El Comercio. Aguilar works as a supervisor.

Mario Sepúlveda is a 39 years old electrician native of Parral; he is married. He has been the spokesman of the most of the miners’ videos. Mario Sepúlveda was the second miner to be rescued, on Wednesday at 01:10 local time (04:10 UTC).

Víctor Zamora is a 33 years old auto mechanic. Zamora is married to Jéssica Cortez, who confirmed she was pregnant while he was in the mine.

Osman Araya is 30 years old, and married. He began working as miner four months before the accident.

Florencio Ávalos is 31 years old. He is the brother of Renán Ávalos, who is also trapped in the mine. He worked as driver in San José. Ávalos filmed videos, sent later to his relatives.

Ávalos was the first miner to be rescued, on Wednesday at 00:10 local time (03:10 UTC).

Jorge Galleguillos, 56 years old, has worked all his life in the mine. He said in one video he was feeling unwell; he takes medication for hypertension.

Carlos Barrios is a 27 years old miner. His father, Antenor Barrios, told Agence France-Presse: “I find he’s very strong and has enthusiasm. He spoke loud and clear. I was excited.”

Franklin Lobos Ramírez is a 53 years old retired footballer. He played for Cobresal, Deportes Antofagasta, Club de Deportes Santiago Wanderers and Unión La Calera, and briefly for the Chile national football team. Lobos had worked as a truck driver in the mine.

Yonni Barrios, called “The Doctor”, is a 50 years old electrician. He has knowledge of first aid, and was given responsibility for monitoring the health of his colleagues. “I felt I was in hell,” Barrios said in a letter to his wife.

Carlos Bugueño, 27 years old, joined the mine with Pedro Cortez. Previously, he worked as a watchman.

Alex Vega Salazar is a 31 years old heavy machinery mechanic. He is married to Jessica Salgado, and celebrated his birthday in the mine on September 22.

Ariel Ticona is a 29 years old miner. His wife, Margarita gave birth to his daughter on September 14. She was named Esperanza (Hope), at Ticona’s request.

Richard Villarroel is a 27 years old mechanic from Coyhaique.

Edison Peña is a 34 years old miner. “I want to go out soon,” he said on his first contact with his relatives. “I want to be free, I want to see the sun,” he added. He is a fan of Elvis Presley.

Claudio Yáñez is 34 years old, and works as drill operator.

José Ojeda, 46 years old, is the master driller. Ojeda is widowed and diabetic.

Luis Urzúa is a 54 year old topographer. He is the shift-leader, and was the first miner to talk with authorities. He is known as Don Lucho among the miners. He draw plans of the area of the mine where they are trapped.

Urzúa will be the last miner to leave the mine.

José Henríquez is a 54 years old drill master. He is also an evangelical preacher, and has worked in mines for 33 years.

Víctor Segovia is a 48 years old electrician. He is in charge of writing down everything that happens in the mine.

Pablo Rojas is a 45 years old explosives loader. Married, he had been working less than six months in the mine.

Juan Illanes is a 51 year old miner. He was a sergeant in the Beagle border conflict between Chile and Argentina in 1978, the incident which almost provoked a war between the countries.

Illanes was rescued on Wednesday, at 02:07 local time (05:07 UTC).

Jimmy Sánchez, 19, is the youngest miner. He had been working in the mine for five months before the accident. His role is to check the temperature and humidity in the mine.

Samuel Ávalos is a 43 years miner. His wife Ruth said “he was addicted to the cocaine.” His role in the rescue is to check air quality in the area the miners are living. According to the BBC, “Ávalos has worked in the mine for five months.”

Mario Gómez, aged 63, is the oldest of the miners. He has worked 51 years as miner. His father was also a miner, and is nicknamed “El Navegao” (“The Sailed One”). He was thinking of retiring in November.

Gómez also wrote the message “Estamos bien en el refugio los 33” (“We are fine in the shelter the 33 [of us]”).

Segovia is 48 years old. He is married to Jessica Chille, who said “To hear his voice was a confort to my heart,” after talking with him for the first time in 24 days. His sister María, was nicknamed “La Alcaldesa” (“The Mayoress”) for her leading role at Campamento Esperanza. His father, Darío Senior, was trapped in a mine for a week, and suffered serious injuries after two other mining accidents, according to the BBC.

Carlos Mamani is a 23 years old heavy equipment operator. He is also the only non-Chilean miner; Mamani is Bolivian. He began working in the mine just five days before the accident.

He was rescued at 03:11 local time (06:11 UTC) on Wednesday.

Renán Ávalos is a 29 years old miner, single, who had been working for five months in the mine before the accident. Florencio Ávalos is his brother.

Omar Reygadas is a 56 year old electrician. He began working in the mine shortly before the accident.

Esteban Rojas is a 44 years old miner. Rojas is married to Jessica Yáñez.

How New Parents Can Prepare For A New Baby From Surrogate Mother

byAlma Abell

So your good friend is going to be a surrogate in California for you and you’re excited about the thought of becoming a new parent. In the midst of the joy there are some important things you must do to prepare for the baby’s arrival. One of the first things you should do is set up the baby’s nursery so that the baby will have a comfortable space to sleep and hang out in. You can also start a baby registry where loved ones would contribute items that the baby needs for the first few months of his life.

Open A Savings Account

[youtube]http://www.youtube.com/watch?v=nuLSAeSJ1CA[/youtube]

Raising a baby will be costly so it is important that you open a savings account so that as you contribute a portion of your income each week, you’ll build enough cash reserves to take care of the baby and have enough funds for emergencies. This reduces your need to obtain government services for your baby.

Get in Shape Physically

Another thing you should do is prepare yourself physically because you want to be in shape while handling parenting duties. Start eating healthier foods such as salads, yogurts and lean meats. Get in at least an hour of exercise per day and have your blood pressure and blood sugar checked before the baby arrives.

Childproof Your Home

As the baby becomes a toddler he will be curious and play with everything he sees. This is why you should childproof your home and make it safe for the baby. Lock up anything that will pose a choking hazard and don’t leave items in open spaces so that the baby will not injure himself.

Stock Up On The Essentials

It is important that you purchase the essential items that the baby needs in bulk and the best way to do this is to get a membership with a wholesale store. The main items you should get in bulk are diapers, baby bottles, infant formula, pacifiers, baby wipes, towels, blankets, and hair accessories if you have a baby girl. Don’t forget to pick up clothing and other essentials, as well.

When someone decides to become a surrogate for you, it is a gift of parenthood. You want to do everything you can to make the home and yourself ready for the baby’s arrival and get help from loved ones when needed. Find a good pediatrician who can help you keep the baby healthy long term.

Teenage gunman kills 15 in south-west Germany

Wednesday, March 11, 2009

A 17 year old gunman has killed 15 in the towns of Winnenden and Wendlingen, near Stuttgart in southwest Germany, before being killed himself in a shootout with police.

Dressed in what has been described as black combat gear, the gunman entered Albertville school at 9.30am on March 11 2009 and, beginning with a particular classroom, started shooting at pupils and staff wandering through various 9th and 10th grade classrooms, reloading his handgun a number of times as he did so in a two minute shooting spree.

Reportedly aiming at the heads of his victims the gunman, identified as former pupil Tim Kretschmer, initially killed nine pupils, all except one being female, and three female teachers, one of whom was still a trainee who started only 4 weeks earlier. A further seven female students were injured. There are conflicting reports if a tenth student died from injuries later. Other students were injured as they attempted to escape by jumping out of windows.

Police received a call within three minutes at 9:33 a.m. the police entered the school at 9:40 a.m. to discover the bodies of the slain victims. A pupil managed to call for help using a mobile phone, and the headmaster apparently gave an early warning via the intercom so that some of the teachers were able to lock the doors to their classrooms from the inside, probably preventing more killings. From the first floor of the school, Kretschmer fired at the first police who arrived on the scene.

Kretschmer fled the school as further police arrived, and killed a gardener in a nearby clinic as he did so.

As the police evacuated the 1,000 pupil secondary school, Kretschmer, hijacked a Volkswagen Sharan and forced the driver to drive him south. Slowed by a traffic jam Kretschmer forced the driver to drive towards Wendlingen.

A police checkpoint was not able to apprehend Kretschmer. The car went off the road, and the gunman fled into an industrial area in Wendlingen about 40 kilometres (25 miles) from the school.

Tracked by specialist armed police and police spotters in helicopters Kretschmer was finally cornered in the carpark of a car dealership in Wendlingen. Kretschmer, the son of a well known local farmer and businessman, made a last stand and killed a salesman and a customer before being shot by police marksmen being injured in the leg. At first it was unclear if the shooting killed him or if he was wounded and then shot himself. Police now believe that the evidence points to suicide.

During the manhunt, police stormed the youth’s home in Leutenbach to conduct a search. Kretschmer’s father, a hobbyist hunter, legally owned 15 firearms and one was missing from the collection. The majority of the firearms were kept securely locked as German law mandates, however a handgun was kept in the parent’s bedroom and it is this weapon that is presumed to have been used. Also, all the ammunition was not locked away, and Kretschmer reportedly carried a “3-digit figure” of ammunition with him.

The police are still uncertain about the motive, as Kretschmer was known as a calm, inconspicuous person to the people who knew him personally. He didn’t have a criminal record and has apparently not made any announcements of his killing spree, neither online nor to any of his friends.

Kretschmer had been a graduate of Albertville school the previous year.

Two police officers remain in serious condition.

Five biggest US banks told to raise $74.6 billion; fail “stress tests”

Saturday, May 9, 2009

The five largest United States banks need a total of US$74.6 billion in extra funds to increase their cash reserves, according to so-called “stress tests” conducted by regulators to determine whether the banks have enough capital to survive the ongoing recession.

“Our hope with today’s actions is that banks are going to be able to get back to the business of banking,” said Timothy Geithner, the US Treasury Secretary.

The results of the stress-test determined that Bank of America was the bank most at risk, needing $33.9 billion. Wells Fargo will require an additional $13.7 billion, while GMAC needs $11.5 billion.

Seven other banks failed the “stress test”, including: Citigroup, Morgan Stanley, Regions Financial, SunTrust Banks, KeyCorp, Fifth Third Bancorp, and PNC Financial Services.

Nine other banks that underwent stress tests, such as Goldman Sachs, JPMorgan Chase, Bank of New York Mellon, MetLife, American Express, State Street, BB&T, US Bancorp and Capital One Financial, were found to have enough capital in case the recession deepens.

Those banks that need extra money will be set a June 8 deadline to draw up their plans to raise the additional capital and have regulators approve them.

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Finding The Right Contractors In Honolulu

byAlma Abell

Many people are looking into the advantages of building their own homes these days, because they can customize the appearance to their own specifications. This can help many people get the home they have always wanted to see for themselves. It can help to understand how contractors in Honolulu can help owners complete their projects on time and according to specifications. This is important to many people, especially if they want to put the house up on the market. They will need to set deadlines and meet them if they are going to be able to get the house out on time.

First, it can be important to identify what Contractors in Honolulu can do to help people get the support they need. Some of them will tend to specialize in different types of repairs that can be made throughout a home. For instance, some contractors may be able to install plumbing and electrical systems in a home. This will make sure that these systems are installed properly and prepared for when the house may be shown to buyers. This is an essential function, so it helps to find contractors who are knowledgeable in these specific areas.

There are some who might want to check in to getting contractors who can help with renovation projects as well. There are many great houses out there that just need a little help to be put back out on the market soon. This is appealing to many people since they can often get a good bargain on undervalued properties. This can be a great investment opportunity for people who may be looking to sell a home in the Honolulu housing market.Finally, some people may need to think about how they will be able to find and hire these Contractors in Honolulu. There is actually one site that will link people up with the best professionals in the area. Some owners and renovators may want to check out what they can get through Execconstruction.com. When they Visit their site, they will notice that there are a wide range of different professionals available to them.

Canada’s Etobicoke Centre (Ward 3) city council candidates speak

This exclusive interview features first-hand journalism by a Wikinews reporter. See the collaboration page for more details.

Monday, October 30, 2006

On November 13, Torontoians will be heading to the polls to vote for their ward’s councillor and for mayor. Among Toronto’s ridings is Etobicoke Centre (Ward 3). One candidate responded to Wikinews’ requests for an interview. This ward’s candidates include Doug Holyday (incumbent), Peter Kudryk, Lillian Lança, and Ross Vaughan.

For more information on the election, read Toronto municipal election, 2006.

Stolen minibus recovered 35 years after theft

Friday, November 6, 2009

A 1965 Volkswagen minibus that was stolen in 1974 has been recovered by customs agents in Los Angeles. The vintage minibus was in pristine condition, valued at $25,000, and was found during a routine inspection of a shipping container scheduled for departure to The Netherlands. A routine computer database search on its vehicle identification number flagged it as having been stolen from a vehicle upholstery shop in Spokane, Washington on July 12, 1974. A custom restoration business in Arizona was attempting to deliver it to overseas clients last month when authorities intercepted the vehicle.

“Pretty amazing, isn’t it?”

The theft appeared on the National Insurance Crime Bureau database, which is used by border authorities and contains all stolen vehicle records. Most police databases remove unsolved vehicle thefts after five years.

The California Highway Patrol does not suspect the restorer of wrongdoing, according to investigating officer Mike Maleta. Possession of the vehicle apparently changed several times. Police in Spokane have not yet located the rightful owner, whose identity has not been released to the press. Maleta hopes that a trail of registration documents and interviews will uncover the thief.

“[The restoration firm owner is] a victim himself. He was an innocent purchaser…”

The Allstate insurance company paid $2500 shortly after the theft occurred and wants to take possession of the vintage minibus. Allstate spokeswoman Megan Brunet expects that after the necessary paperwork is processed the firm will sell it at auction.

Stanford physicists print smallest-ever letters ‘SU’ at subatomic level of 1.5 nanometres tall

Wednesday, February 4, 2009

A new historic physics record has been set by scientists for exceedingly small writing, opening a new door to computing‘s future. Stanford University physicists have claimed to have written the letters “SU” at sub-atomic size.

Graduate students Christopher Moon, Laila Mattos, Brian Foster and Gabriel Zeltzer, under the direction of assistant professor of physics Hari Manoharan, have produced the world’s smallest lettering, which is approximately 1.5 nanometres tall, using a molecular projector, called Scanning Tunneling Microscope (STM) to push individual carbon monoxide molecules on a copper or silver sheet surface, based on interference of electron energy states.

A nanometre (Greek: ?????, nanos, dwarf; ?????, metr?, count) is a unit of length in the metric system, equal to one billionth of a metre (i.e., 10-9 m or one millionth of a millimetre), and also equals ten Ångström, an internationally recognized non-SI unit of length. It is often associated with the field of nanotechnology.

“We miniaturised their size so drastically that we ended up with the smallest writing in history,” said Manoharan. “S” and “U,” the two letters in honor of their employer have been reduced so tiny in nanoimprint that if used to print out 32 volumes of an Encyclopedia, 2,000 times, the contents would easily fit on a pinhead.

In the world of downsizing, nanoscribes Manoharan and Moon have proven that information, if reduced in size smaller than an atom, can be stored in more compact form than previously thought. In computing jargon, small sizing results to greater speed and better computer data storage.

“Writing really small has a long history. We wondered: What are the limits? How far can you go? Because materials are made of atoms, it was always believed that if you continue scaling down, you’d end up at that fundamental limit. You’d hit a wall,” said Manoharan.

In writing the letters, the Stanford team utilized an electron‘s unique feature of “pinball table for electrons” — its ability to bounce between different quantum states. In the vibration-proof basement lab of Stanford’s Varian Physics Building, the physicists used a Scanning tunneling microscope in encoding the “S” and “U” within the patterns formed by the electron’s activity, called wave function, arranging carbon monoxide molecules in a very specific pattern on a copper or silver sheet surface.

“Imagine [the copper as] a very shallow pool of water into which we put some rocks [the carbon monoxide molecules]. The water waves scatter and interfere off the rocks, making well defined standing wave patterns,” Manoharan noted. If the “rocks” are placed just right, then the shapes of the waves will form any letters in the alphabet, the researchers said. They used the quantum properties of electrons, rather than photons, as their source of illumination.

According to the study, the atoms were ordered in a circular fashion, with a hole in the middle. A flow of electrons was thereafter fired at the copper support, which resulted into a ripple effect in between the existing atoms. These were pushed aside, and a holographic projection of the letters “SU” became visible in the space between them. “What we did is show that the atom is not the limit — that you can go below that,” Manoharan said.

“It’s difficult to properly express the size of their stacked S and U, but the equivalent would be 0.3 nanometres. This is sufficiently small that you could copy out the Encyclopaedia Britannica on the head of a pin not just once, but thousands of times over,” Manoharan and his nanohologram collaborator Christopher Moon explained.

The team has also shown the salient features of the holographic principle, a property of quantum gravity theories which resolves the black hole information paradox within string theory. They stacked “S” and the “U” – two layers, or pages, of information — within the hologram.

The team stressed their discovery was concentrating electrons in space, in essence, a wire, hoping such a structure could be used to wire together a super-fast quantum computer in the future. In essence, “these electron patterns can act as holograms, that pack information into subatomic spaces, which could one day lead to unlimited information storage,” the study states.

The “Conclusion” of the Stanford article goes as follows:

According to theory, a quantum state can encode any amount of information (at zero temperature), requiring only sufficiently high bandwidth and time in which to read it out. In practice, only recently has progress been made towards encoding several bits into the shapes of bosonic single-photon wave functions, which has applications in quantum key distribution. We have experimentally demonstrated that 35 bits can be permanently encoded into a time-independent fermionic state, and that two such states can be simultaneously prepared in the same area of space. We have simulated hundreds of stacked pairs of random 7 times 5-pixel arrays as well as various ideas for pathological bit patterns, and in every case the information was theoretically encodable. In all experimental attempts, extending down to the subatomic regime, the encoding was successful and the data were retrieved at 100% fidelity. We believe the limitations on bit size are approxlambda/4, but surprisingly the information density can be significantly boosted by using higher-energy electrons and stacking multiple pages holographically. Determining the full theoretical and practical limits of this technique—the trade-offs between information content (the number of pages and bits per page), contrast (the number of measurements required per bit to overcome noise), and the number of atoms in the hologram—will involve further work.Quantum holographic encoding in a two-dimensional electron gas, Christopher R. Moon, Laila S. Mattos, Brian K. Foster, Gabriel Zeltzer & Hari C. Manoharan

The team is not the first to design or print small letters, as attempts have been made since as early as 1960. In December 1959, Nobel Prize-winning physicist Richard Feynman, who delivered his now-legendary lecture entitled “There’s Plenty of Room at the Bottom,” promised new opportunities for those who “thought small.”

Feynman was an American physicist known for the path integral formulation of quantum mechanics, the theory of quantum electrodynamics and the physics of the superfluidity of supercooled liquid helium, as well as work in particle physics (he proposed the parton model).

Feynman offered two challenges at the annual meeting of the American Physical Society, held that year in Caltech, offering a $1000 prize to the first person to solve each of them. Both challenges involved nanotechnology, and the first prize was won by William McLellan, who solved the first. The first problem required someone to build a working electric motor that would fit inside a cube 1/64 inches on each side. McLellan achieved this feat by November 1960 with his 250-microgram 2000-rpm motor consisting of 13 separate parts.

In 1985, the prize for the second challenge was claimed by Stanford Tom Newman, who, working with electrical engineering professor Fabian Pease, used electron lithography. He wrote or engraved the first page of Charles Dickens’ A Tale of Two Cities, at the required scale, on the head of a pin, with a beam of electrons. The main problem he had before he could claim the prize was finding the text after he had written it; the head of the pin was a huge empty space compared with the text inscribed on it. Such small print could only be read with an electron microscope.

In 1989, however, Stanford lost its record, when Donald Eigler and Erhard Schweizer, scientists at IBM’s Almaden Research Center in San Jose were the first to position or manipulate 35 individual atoms of xenon one at a time to form the letters I, B and M using a STM. The atoms were pushed on the surface of the nickel to create letters 5nm tall.

In 1991, Japanese researchers managed to chisel 1.5 nm-tall characters onto a molybdenum disulphide crystal, using the same STM method. Hitachi, at that time, set the record for the smallest microscopic calligraphy ever designed. The Stanford effort failed to surpass the feat, but it, however, introduced a novel technique. Having equaled Hitachi’s record, the Stanford team went a step further. They used a holographic variation on the IBM technique, for instead of fixing the letters onto a support, the new method created them holographically.

In the scientific breakthrough, the Stanford team has now claimed they have written the smallest letters ever – assembled from subatomic-sized bits as small as 0.3 nanometers, or roughly one third of a billionth of a meter. The new super-mini letters created are 40 times smaller than the original effort and more than four times smaller than the IBM initials, states the paper Quantum holographic encoding in a two-dimensional electron gas, published online in the journal Nature Nanotechnology. The new sub-atomic size letters are around a third of the size of the atomic ones created by Eigler and Schweizer at IBM.

A subatomic particle is an elementary or composite particle smaller than an atom. Particle physics and nuclear physics are concerned with the study of these particles, their interactions, and non-atomic matter. Subatomic particles include the atomic constituents electrons, protons, and neutrons. Protons and neutrons are composite particles, consisting of quarks.

“Everyone can look around and see the growing amount of information we deal with on a daily basis. All that knowledge is out there. For society to move forward, we need a better way to process it, and store it more densely,” Manoharan said. “Although these projections are stable — they’ll last as long as none of the carbon dioxide molecules move — this technique is unlikely to revolutionize storage, as it’s currently a bit too challenging to determine and create the appropriate pattern of molecules to create a desired hologram,” the authors cautioned. Nevertheless, they suggest that “the practical limits of both the technique and the data density it enables merit further research.”

In 2000, it was Hari Manoharan, Christopher Lutz and Donald Eigler who first experimentally observed quantum mirage at the IBM Almaden Research Center in San Jose, California. In physics, a quantum mirage is a peculiar result in quantum chaos. Their study in a paper published in Nature, states they demonstrated that the Kondo resonance signature of a magnetic adatom located at one focus of an elliptically shaped quantum corral could be projected to, and made large at the other focus of the corral.

UK government stops compulsory testing of fourteen-year-olds

Wednesday, October 15, 2008

The UK Government has stated that children in Britain will no longer be required to take compulsory, externally marked tests at the age of fourteen.

The change takes effect immediately, meaning that children who were due to take the test this year no longer have to do so.

Secretary of State for Children, Schools and Families Ed Balls yesterday announced his plans to radically change the UK testing system, in parliament.

Currently, almost ten million tests are sat each year by British pupils. This change is expected to cut the number of tests taken in half, according to The Guardian.

The tests for seven and eleven year olds are not being abolished. A review group is being set up, however, to research the effect of these tests on eleven-year-olds.

Instead of league tables showing test results, the government will produce report cards for secondary schools. According to Ed Balls, the results from GCSEs will be adequate to judge the performance of schools by their test results.

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The decision to abolish the tests for fourteen year olds came as a result of a situation earlier this year, when there were long delays with the delivery of test results to students of this age.

According to Christine Blower, acting general secretary of the National Union of Teachers, the government is admitting that the previous test system failed by making this move.

“For too long English, mathematics and science teachers in secondary schools have found themselves skewing everything to enable their pupils to jump through a series of unnecessary hoops,” she claimed, while Chris Keates, general secretary of the National Association of Schoolmasters Union of Women Teachers, said that “the sound of a deep collective sigh of relief will emanate from secondary schools across the country.”

Both major UK opposition parties welcomed this move. Conservative Shadow Secretary of State for Children Michael Gove stated that his party have “argued for fewer national tests and more rigor and we want to work constructively to improve the assessment and qualifications regime.”

David Laws, Shadow Secretary of State for Children for the Liberal Democrats, said that “the Sats tests taken by 14-year-olds are not only a waste of time but have been highly unreliable over the last few years.”

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