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The time is 17:00 (UTC) on May 26th, 2006, and this is Audio Wikinews News Briefs.

Thursday, April 22, 2010

A luxury train derailed in South Africa outside the capitol of Pretoria yesterday, killing at least two people and leaving 25 injured.

The train had been entering a station in Pretoria when seventeen cars derailed, apparently during a switch between steam and electric locomotives, although the exact cause is not known. The train had been coming from Cape Town, with 55 passengers and an unknown number of crew on board.

None of the dead were identified, and nationalities were not released. However, a spokesperson for the operator of the train, Rovos Rail, said that passengers were from several different countries, and that most customers of the railroad were from the US or Europe.

Chris Botha, an emergency worker at the scene said that the derailment had produced “absolute carnage.” According to him, “[s]ome of the railway coaches are lying on top of each other and absolute wreckages. They had to use hydraulic rescue equipment to cut some of the people free.” The section of track where the incident occurred has been closed off.

Friday, January 14, 2005

Huygens, the European built Titan exploration probe, ended its seven-year voyage today when it landed on the surface of the second largest moon in the solar system at 11:38 a.m. UTC. The probe, which the European Space Agency (ESA) began developing 17 years ago, has worked well with only minor system failures.

“This is a great achievement for Europe and its US partners inthis ambitious international endeavor to explore theSaturnian system”, said Jean-Jacques Dordain, the Director General of the ESA [1]

The first confirmation that Huygens had successfully entered Titan’s thick atmosphere was at 10:25 a.m. UTC when the Green Bank radio telescope in the United States directly received the faint carrier signal of its beacon. Due to the immense distance, the radio transmission took 67 minutes to arrive.

Huygens broadcast data to its Cassini mothership (the US probe which carried Huygens to Titan) throughout its descent and then from the surface. After Cassini dropped below the horizon of Titan (cutting the radio link), Cassini turned towards Earth to begin transmitting its recording of the Huygens data to the European Space Operations Centre in Darmstadt, Germany.

So far, ESA has released least three pictures—two from the probe’s descent through the atmosphere under parachutes and then a picture near the surface. The Huygens probe took a total of over 300 black and white photographs during its brief mission.

“The Huygens scientists are all delighted. This was worth the longwait,” says Dr Jean-Pierre Lebreton, ESA Huygens Mission Manager.[2]

The Cassini-Huygens mission is conducted by an alliance between NASA, the ESA, and ASI, the Italian space agency. The NASA Jet Propulsion Laboratory designed, developed and assembled the Cassini orbiter.

Monday, March 6, 2006

In Helsinki, the Finnish trade union for bus and truck drivers has gone on strike on Sunday evening, mainly over the use of part-time labor. The strike is estimated to affect 100,000 people in the capital area, crowding the remaining transit system on Monday morning. The strike is halting almost half of all bus traffic in and around Helsinki, especially hurting travellers commuting from outlying cities Espoo and Vantaa, where over 60% of bus traffic will be stopped.

The strike also affects 4,000 of Finland’s 55,000 delivery trucks, as well as waste management in many areas. The strike is not affecting trains, trams or the underground, but heavy crowding is to be expected. Authorities are also warning of traffic jams during rush-hours as people use personal cars instead of public transportation.

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:

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.

Friday, September 1, 2006

The Prime Minister of New Zealand, Helen Clark, yesterday unveiled Kiwi Advanced Research and Education Network (KAREN). It is super high speed Internet that is capable of transmitting data with speeds of up to ten gigabits per second, 10,000 times faster than the current speed of broadband (1Mbps), and 200,000 times faster than dial-up.

The New Zealand Government put NZ$43 million ($28.1 million USD) into the Crown company: Research and Education Advanced Network of New Zealand (REANNZ) organization, responsible for the running of KAREN.

KAREN will link universities and research institutions in Auckland, Hamilton, Palmerston North, Wellington, Christchurch, Dunedin, Hawkes Bay, Nelson and Rotorua and then to the rest of the world via a TelstraClear fibre optic cable.

The network will allow geologists/geophysicists to access U.S. data on fault lines, 3D modellers the ability to collaborate on international mapping projects and students will be able to participate in interactive video lectures with experts, anywhere in the world.

The technology so far is limited to just universities and research institutions but Minister for Education Steve Maharey said: “The network will be extended over time to include other institutions, including schools, libraries and museums.” It is also limited to just one university in the South Island, it is located in the HIT Lab NZ at the University of Canterbury.

Clark said: “The link is crucial in order to attract and retain scientists, because it allows a greater level of real time collaboration between scientists based in New Zealand, and their colleagues around the world.”

The Telecommunications’ Users Association of New Zealand chief executive, Ernie Newman, said: “Karen was a ‘great initiative’ for the science community, and that would have wider benefits for the country.”

Dr. Mark Billinhurst, HIT Lab director, said: “The network meant the country was now legitimately part of the international research community.”

Friday, November 4, 2005

New outbreaks of the lethal H5N1 strain of the avian influenza have been documented in Vietnam and China. According to a Vietnamese animal health officer, 4,000 poultry and water fowl have died of the virus after October 25 in provinces 70 kilometres north of Hanoi. In China, 9,000 chickens and twenty wild birds have died of the virus in just over two weeks with more than 300,000 birds culled as a precaution.

Meanwhile, Japanese authorities are planning on culling 180,000 chickens in response to the discovery of the first case of bird flu in the country in over a year. Most of Japan’s previous avian influenza outbreaks have been due to the H5N2 strain, which poses no known threat to humans. The virus found in a farm north-east of Tokyo has been confirmed as belonging to the H5 family, but additional tests are needed to find out whether it is the H5N1 strain. A Japanese agriculture ministry official said that there was “little concern” of the virus being the H5N1 type as no case of the strain has previously been found in the area.

At least 60 people have died of the H5N1 strain in east Asia. Over 40 of the fatalities have occurred in Vietnam, where tests are currently being conducted for at least one possible additional human infection. China has not reported any human infections of the avian flu.