All posts by Admin

Category:Sports

This is the category for sports.

Refresh this list to see the latest articles.

  • 19 August 2021: 2021 rugby union season on Australia’s Sunshine Coast to culminate with September 18 Grand Final
  • 30 July 2021: Weightlifter Hidilyn Diaz wins the Philippines’ first-ever Olympic gold medal
  • 23 July 2021: 2020 Olympics opening ceremony takes place in Tokyo
  • 20 July 2021: Baseball game suspended after three injured in shooting outside Washington Nationals–San Diego Padres game
  • 4 July 2021: Post match interview with Maroochydore Rugby Union Club’s James Turvey on his 100 A grade games
  • 6 May 2021: Maroochydore pick up first win in round 5 Australia’s Sunshine Coast Rugby Union 2021 season
  • 28 April 2021: Wynnum defeat Maroochydore in round 4 of Australia’s Sunshine Coast Rugby Union 2021 season
  • 9 April 2021: North Korea withdraws from Tokyo Olympics, citing COVID-19 concerns
  • 26 February 2021: Ahmedabad’s Sardar Patel Cricket inaugrated after being renamed as ‘Narendra Modi Stadium’
  • 4 January 2021: Uruguayan Language Academy rejects FA sanction against Edinson Cavani as ‘poverty of cultural and linguistic knowledge’
?Category:Sports

You can also browse through all articles in this category alphabetically.

From Wikinews, the free news source you can write.


Sister projects
  • Wikibooks
  • Commons
  • Wikidata
  • Wikipedia
  • Wikiquote
  • Wikisource
  • Wiktionary
  • Wikiversity

Subcategories

Pages in category “Sports”

(previous page) ()(previous page) ()

Media in category “Sports”

Retrieved from “https://en.wikinews.org/w/index.php?title=Category:Sports&oldid=4636351”

China threatens to take action over US-Taiwan deal

Sunday, January 31, 2010

China has stated that they will cease all military exchanges with the United States in response to a US$6.4 billion (NT$204 billion) weapons deal with Taiwan going ahead. He Yafei, Chinese Vice-Foreign Minister, said that there would be a “serious negative impact” with regards to the relationship between the US and China.

…a seriously negative impact on many important areas of exchanges and co-operation between the two countries…

Taiwan and mainland China have been ruled by separate governments since 1949, and neither recognize each other’s independence. In an effort to regain control of Taiwan, the government in Beijing has been open to running the island like Hong Kong, in a “one country, two systems” manner, but people in Taiwan support the status quo. The Chinese defense ministry said that they had “decided to suspend planned mutual military visits”. They “strongly demand” that the United States “respect the Chinese side’s interests,” calling for the proposal to be rejected.

China summoned the US Ambassador to China, Jon Huntsman, to warn the US Government about the consequences, and to urge for cancellation of the deal. The Pentagon proposed the deal, that was first promised during the later days of the Bush administration, to Congress earlier.

Yafei issued a statement on the Foreign Ministry website stating that “the United States’ announcement of the planned weapons sales to Taiwan will have a seriously negative impact on many important areas of exchanges and co-operation between the two countries.”

HAVE YOUR SAY
Is the USA right to sell arms to Taiwan?
Add or view comments

However, the US is defending itself. “Such sales contribute to maintaining security and stability across the Taiwan Strait”, Laura Tischler, spokeswoman for the US State Department, said.

Beijing is threatening to review co-operation on major issues and impose sanctions on companies selling arms, even though US companies are banned from selling arms to China as a result of the Tiananmen Square massacre in 1989, so it is not clear what the effect will be. A Chinese defence ministry spokesman said that the sanctions reflected the “severe harm” the deal would have. A foreign ministry spokesman stated that there would be “repercussions that neither side wishes to see” if the deal went ahead.

Taiwan, one of Asia’s few functioning democracies, welcomed the proposal, with Taiwanese president Ma Ying-jeou being quoted as saying “It will let Taiwan feel more confident and secure so we can have more interactions with China.”

The arms deal includes UH-60 Black Hawk helicopters, communications equipment and MIM-104 Patriot missiles, but does not include the F-16 fighter jets that Taiwan’s military were looking for. The US is legally obliged to supply Taiwan with defensive weapons under the Taiwan Relations Act 1979.

In 2003, an unnamed US briefing stated that “[the US] would have to get involved if China tried to use coercion or force to unilaterally change the status of Taiwan”.

Retrieved from “https://en.wikinews.org/w/index.php?title=China_threatens_to_take_action_over_US-Taiwan_deal&oldid=2715591”

Water main bursts in White Plains, New York, US

Thursday, August 13, 2020

On Monday, a water main broke in the US city of White Plains, New York, cutting off the water supply to most of the city. The burst pipe caused a huge crater to form in a major intersection in the heart of the city, flooding the streets. Emergency crews were on the scene to repair the pipes in order to restore water service. Almost all customers had water restored by the evening.

The water pipe burst under the road surface at the intersection of Martine Avenue and S. Lexington Avenue in the afternoon. By 5:00 pm EDT (2100 UTC) the city issued an advisory of water outages and stated the Department of Public Works (DPW) had located the problem. Wikinews was on the scene around 6:20 pm and could observe a large crater in the street caused by the amount of water from the burst pipe. Crews from DPW as well as some the fire department were there. Water was no longer rushing uncontrolled into the street.

Shortly thereafter, at 6:30 pm, the city issued a follow-up statement announcing the break had been contained by DPW. Residents were advised to expect the water to perhaps be “discolored” when it initially returned. The city estimated by 9 pm, there would be enough pressure returned to the water system for all to have water. Indeed, News 12 reported, only buildings adjacent to the break were without water service.

White Plains is the county seat for Westchester County, New York, which is also home to the cities New Rochelle and Yonkers which formed the epicenter of the COVID-19 outbreak in New York. Westchester lies directly to the north of New York City.

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6

Retrieved from “https://en.wikinews.org/w/index.php?title=Water_main_bursts_in_White_Plains,_New_York,_US&oldid=4585761”

Flexible Ducts Air Conditioning Heating Construction Trades &Amp; Building Renovations

By Allan I Schacter

Flexible ducts, ducting, hose or hoses that are generally and often used in the heating & air conditioning trades as well as in building renovations and upgrades deserves more than special care and attention. Flexible ducting is spiral in shape and shapes and generally made and composed of either fabric or metal. Fabric hose consists of a fabric (generally either in older previous forms cotton or more recently in newer design and manufacture polyesters) all with a neoprene coating over metal wire. Flexible ducts are generally used for normal temperature and temperatures and non corrosive applications. That is for example a simple and standard home clothes dryer hose setup. You may well need, and your local, state or provincial building codes demand, metal hose and hoses for high and higher temperatures, corrosive operations, some solvents or in some heating, air conditioning and ducting situations extreme or specific types of dust. Metal hoses are usually made and fabricated out of aluminum or stainless steel and steels.

Flexible hose is readily available in one inch increments for diameters from four inches to 8 inches and in two inch increments from eight inches to twelve inches. Smaller sizes should be readily available in the heating and air conditioning trades marketplace at your local heat and air-conditioning wholesale supply or supplier.

[youtube]http://www.youtube.com/watch?v=KCGpX2ru2Xc[/youtube]

Flexible hose resistance and resistances are usually much higher than resistance of conventional galvanized ducts. With flexible ducts and ducting, resistance is further increased by kinks that occur when the hose is not extended to its full length. To decrease this resistance 1) use the least amount of flexible hose possible 2) eliminate any sharp 90 degree bends in the system and 3) cut off any excess hose. As a general rule in the heating and air conditioning trades experienced staff and contractors will hold and state that if you double the resistance figure for a rigid duct, you will overall have a rough estimate of the resistance of a flexible duct system.

Overall it can be stated and is generally pointed out in the heating and air-conditioning trades that flexible ductings principal advantage overall is the maneuverability of the plain opening hood at the end. Locate the hood as close as possible to the and any source of contamination.

Flexible ducts are maneuvered in one of two ways and means. The first involves mechanical arms similar to those used to control movable desk lamps. These arms can be purchased commercially at either big box hardware and home reno stores, or your favorite local heating and supply trades supplier shops. The second method involves two or more overhead pulleys with a rope attached at one end to the duct and at the other to a cleat or cleating device.

Lastly the commercial or mechanical arm devices have the overall and specific disadvantage and disadvantages of limited height and heights as well as position and positional maneuverability as compared to flexible duct setups utilizing the pulley system and systems. Overall it can be both said and stated by experienced professional air conditioning and heating staff that the pulley systems are more maneuverable but more difficult to adjust accurately.

About the Author: Allan I. Schacter Furnasman Winnipeg Schedule a free, no obligation appointment with one of our comfort consultants to learn more about our entire line-up of heating products

Furnasman One Hour Heating Winnipeg1 Hour Air Conditioning

St Vital Transcona Canada

bit.ly/furnasmanprivacypolicy

Source:

isnare.com

Permanent Link:

isnare.com/?aid=565051&ca=Real+Estate

US professional wrestler Jon Huber dies aged 41

Monday, December 28, 2020

US professional wrestler Jon Huber, who performed for WWE (World Wrestling Entertainment) under the ring name Luke Harper and for AEW (All Elite Wrestling) under the ring name Brodie Lee, died on Saturday aged 41.

According to his wife, Amanda, Huber succumbed to an unspecified lung disorder, unrelated to COVID-19, for which he received treatment at the Mayo Clinic. At the time of his death, Huber was signed to AEW but had been absent from television tapings since October for reasons not publicized. The professional wrestling community reacted to the news with grief and shock.

“Heartbroken and numb,” writes Huber’s longtime tag team partner Erick Rowan on Instagram. “I have lost not only a friend but a brother!”

In his WWE run from 2012 to 2019, as Luke Harper, Huber, an imposing figure standing six feet five inches tall, aligned with Rowan as part of The Wyatt Family faction. He won the promotion’s Intercontinental Championship once and the Smackdown Tag Team Championship. After asking for his release from WWE, Huber signed with AEW around the beginning of this year. In March, he debuted as the heel Brodie Lee, leader of the villainous faction The Dark Order. This past August, he won the promotion’s TNT Championship.

“Huber was exceptionally respected and loved in every way”, reads an AEW press release, “a fierce and captivating talent, a thoughtful mentor and simply a very kind soul that starkly contradicted his persona as Mr. Brodie Lee. Jon’s love for his wife Amanda, and children Brodie and Nolan, was evident to all of us who were fortunate enough to spend time with him”.

WWE expressed sadness and extended condolences to the family, friends, and fans of Huber. They currently feature a video on their website highlighting Huber’s career.

Retrieved from “https://en.wikinews.org/w/index.php?title=US_professional_wrestler_Jon_Huber_dies_aged_41&oldid=4626419”

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.

Retrieved from “https://en.wikinews.org/w/index.php?title=Stanford_physicists_print_smallest-ever_letters_%27SU%27_at_subatomic_level_of_1.5_nanometres_tall&oldid=4516346”

Football Betting Strategies

Match result betting strategy

This is one of the most popular football strategies widely used by the bettors. Also the freshers prefer this strategy. And experienced bettors in fact, admit that it is a reliable strategy.

Match result betting strategy means that you need to predict the outcome of this or that match – the winning of the first or second team or even the draw. Bookmakers mark such outcomes as 1, 2 and X. Always remember, that in some events, the outcome can include extra time and in other – only normal time. Variants of this kind of football strategy are one team not lose (1X or X2), one team win (there won’t be a draw) – 12. Usually, odds are not very high and such bets are included into express bets.

Correct score betting

This kind of football betting strategies is very hard to predict but it attracts bettors because of “tasty” odds. If you tell precisely the correct score of the match, you will multiply the sum of your bet in 5-6 times of even more. It is possible to make several bets on different variants of the score of one and the same match and due to huge winning you will recover all your betting expenses and save quite a nice profit.

Half-time/full-time strategy

This is one of the most interesting football betting strategies. The bettors should predict, how will the first half of the match and the whole match finish. Widely spread are the bets where eventually stronger team is playing with a weak one. The high odds are given for the first half draw and the favorite’s winning of the whole match. It is due to the fact that thanks to the perfect physical performance, good luck and drive many underdogs can hold the draw during the first half but because the football team is weak it loses after the break. Freshers can use time-match – rather profitable and interesting kind of football betting strategies.

Over/Under Betting

This is one more widely spread football betting strategy variant. There is nothing difficult about it. You just need to predict how many goals the teams will score. The common total for the whole match is 2.5.

Now it is possible to find special programs that monitor the movements of totals from the moment of its appearing in bookmakers line and up to the sport event start. Having analyzed these variables, you will be able to make a right decision much more easier and it will help you to stand to gain.

Sending off football betting strategy

The variant of the football betting strategies that presupposes the analysis of teams discipline during the last matches is the possible sending off of the football player. This variant is ignored by the vast majority of the bettors, but absolutely wrongly. If you don’t make a mistake and a football player is sent off, you will be able to win three times as much you have put a bet

For this strategy the real football battles are usually chosen – classic grands fights (Barcelona-Real, Manchester United-Chelsea and others), where passions run high from the first and up to the last minute and where the possibility of sending off is very high.

If you decide to use this strategy for real, don’t forget to pay attention to the figure of a chief referee who can influence greatly on the match. Pay attention on the mean number of the red cards he had given in his career and the particular season, is he considered to be a strict referee or not, etc.

To obtain additional information click here

Woman killed in house fire in South Yorkshire, England

Monday, January 25, 2010

An elderly woman has died in a house fire in South Yorkshire, England. The woman, who is currently remaining unidentified, was blind and 93-years-old when her bungalow in Sheffield caught fire as a result of an accident in her kitchen yesterday afternoon.

An internal investigation into the fire has suggested that while the woman was cooking, she dropped a towel onto one of the stovetops while attempting to move a pan on the cooker. The towel then set alight. When she attempted to put out the fire, the towel dropped to the side of the cooker, alongside some plastic bags.

A smoke alarm sounded; a nearby resident heard the alarm and went to assist. The neighbour managed to break into the bedroom window of the bungalow in order to be able to get inside the building. The person made it to the hallway but had to double back upon seeing the fire and the smoke. It is believed that the woman was overwhelmed by the fumes given out from the plastic which was burning.

At around 1350 GMT, fire service workers entered the elderly lady’s residence to find her collapsed inside the kitchen. People investigating the incident have come to the conclusion that this particular fire was an accidental one. A spokesperson for the South Yorkshire Fire and Rescue Service noted: “Neighbours who tried to enter the property were fought back by smoke and flames.”

Retrieved from “https://en.wikinews.org/w/index.php?title=Woman_killed_in_house_fire_in_South_Yorkshire,_England&oldid=3359738”

Stem cell bills passed by US House and Senate

Wednesday, July 19, 2006

The Stem Cell Research Enhancement Act of 2005 (HR810), approved by the US House of Representatives in 2005, gained a 63-37 approval in the Senate on July 17th, 2006, and will now be presented for presidential approval or veto.

Bill HR810 passed by the Senate as SB471, overrides the 2001 executive order signed by George W. Bush that banned funding by the National Institutes of Health (NIH) for embryonic stem cell research of stem cell lines created after the executive order was issued. The new bill does not include a provision against privately funded research, which is legal under the law, only research funded by NIH.

The bill includes three ethical requirements for funded research. First, the stem cells were derived from human embryos that have been donated from in-vitro fertilization clinics, were created for the purposes of fertility treatment, and were in excess of the clinical need of the individuals seeking such treatment. Second, prior to the consideration of embryo donation and through consultation with the individuals seeking fertility treatment, it was determined that the embryos would never be implanted in a woman and would otherwise be discarded. And lastly, the individuals seeking fertility treatment donated the embryos with written informed consent and without receiving any financial or other inducements to make the donation.

President Bush is expected to veto the bill as early as today, White House Press Secretary Tony Snow said the veto would be “pretty swift”. This would be President Bush’s first veto of his two terms in office.

As with any vetoed bill, a two-thirds majority of the House and Senate can override said veto, but the original vote (63-37) show that the Senate is more than likely to not get the override votes it would need. Even without the two-thirds original vote, Senator Carl Levin of Michigan has voiced support for a veto override.

Two other bills, S2754 and S3504, the Alternative Pluripotent Stem Cell Therapies Enhancement Act and the Fetus Farming Prohibition Act of 2006, respectively, were failed and passed in that order by the House of Representatives. S2754 was introduced to the House this afternoon and failed by a vote of 273-154, S3504 was passed unanimously by the House and is also expected to be on the President’s desk this morning.

Retrieved from “https://en.wikinews.org/w/index.php?title=Stem_cell_bills_passed_by_US_House_and_Senate&oldid=1982981”

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.

Retrieved from “https://en.wikinews.org/w/index.php?title=Stanford_physicists_print_smallest-ever_letters_%27SU%27_at_subatomic_level_of_1.5_nanometres_tall&oldid=4516346”