Tuesday, 4 October 2011




Long Beach is a city situated in Los Angeles County in Southern California, on the Pacific coast of the United States. The city is the 36th-largest city in the nation and the seventh-largest in California. As of 2010, its population was 462,257. In addition, Long Beach is the second largest city within Greater Los Angeles and a principal city of the Los Angeles-Long Beach-Santa Ana metropolitan area.
The city is a dominant maritime center of the United States and was recently named "Aquatic Capital of the Nation." It wields substantial influence critical to the global economy. The Port of Long Beach is the United States' second busiest container port and one of the world's largest shipping ports.[2] The city also maintains a large oil industry with the substance being found both underground and offshore. Manufacturing sectors include those in aircraft, car parts, electronic and audiovisual equipment, and home furnishings. It is also home to headquarters for corporations including Epson America, Molina Healthcare, and SCAN Health Plan. Long Beach has grown with the development of high-technology and aerospace industries in the area.
Long Beach is located in Los Angeles County, about 20 miles (32 km) south of downtown Los Angeles and 105 miles (169 km) north of San Diego. Long Beach borders Orange County on its southeast edge and other Gateway Cities to the west and north.
URL: http://www.beacheszone.com

Sunday, 28 August 2011

 Scientists Discover an 'Instant Cosmic Classic' Supernova



A supernova discovered August 24 is closer to Earth -- approximately 21 million light-years away -- than any other of its kind in a generation. Astronomers believe they caught the supernova within hours of its explosion, a rare feat made possible with a specialized survey telescope and state-of-the-art computational tools.The finding of such a supernova so early and so close has energized the astronomical community as they are scrambling to observe it with as many telescopes as possible, including the Hubble Space Telescope.

Joshua Bloom, assistant professor of astronomy at the University of California, Berkeley, called it "the supernova of a generation." Astronomers at Lawrence Berkeley National Laboratory (Berkeley Lab) and UC Berkeley, who made the discovery predict that it will be a target for research for the next decade, making it one of the most-studied supernova in history.

The supernova, dubbed PTF 11kly, occurred in the Pinwheel Galaxy, located in the "Big Dipper," otherwise known as the Ursa Major constellation. It was discovered by the Palomar Transient Factory (PTF) survey, which is designed to observe and uncover astronomical events as they happen.

"We caught this supernova very soon after explosion. PTF 11kly is getting brighter by the minute. It's already 20 times brighter than it was yesterday," said Peter Nugent, the senior scientist at Berkeley Lab who first spotted the supernova. Nugent is also an adjunct professor of astronomy at UC Berkeley. "Observing PTF 11kly unfold should be a wild ride. It is an instant cosmic classic."

He credits supercomputers at the National Energy Research Scientific Computing Center (NERSC), a Department of Energy supercomputing center at Berkeley Lab, as well as high-speed networks with uncovering this rare event in the nick of time.

The PTF survey uses a robotic telescope mounted on the 48-inch Samuel Oschin Telescope at Palomar Observatory in Southern California to scan the sky nightly. As soon as the observations are taken, the data travels more than 400 miles to NERSC via the National Science Foundation's High Performance Wireless Research and Education Network and DOE's Energy Sciences Network (ESnet). At NERSC, computers running machine learning algorithms in the Real-time Transient Detection Pipeline scan through the data and identify events to follow up on. Within hours of identifying PTF 11kly, this automated system sent the coordinates to telescopes around the world for follow-up observations.

Three hours after the automated PTF pipeline identified this supernova candidate, telescopes in the Canary Islands (Spain) had captured unique "light signatures," or spectra, of the event. Twelve hours later, his team had observed the event with a suite of telescopes including the Lick Observatory (California), and Keck Observatory (Hawaii) and determined the supernova belongs to a special category, called Type Ia. Nugent notes that this is the earliest spectrum ever taken of a Type Ia supernova.

"Type Ia supernova are the kind we use to measure the expansion of the Universe. Seeing one explode so close by allows us to study these events in unprecedented detail," said Mark Sullivan, the Oxford University team leader who was among the first to follow up on this detection.
http://www.siliconindia.com/shownews/Reports_of_Google_acquiring_Slide_emerge-nid-70410-cid--sid-.html

Saturday, 27 August 2011

Famous Scientist

Famous Scientist



Christopher Kelk Ingod

Sir Christopher Kelk Ingold FRS (28 October 1893 – 8 December 1970) was a British chemist based in Leeds and London. His groundbreaking work in the 1920s and 1930s on reaction mechanisms and the electronic structure of organic compounds was responsible for the introduction into mainstream chemistry of concepts such as nucleophile, electrophile, inductive and resonance effects, and such descriptors as SN1, SN2, E1, and E2. He also was a co-author of the Cahn–Ingold–Prelog priority rules. Ingold is regarded as one of chief pioneers of physical organic chemistry.Ingold began his scientific studies at Hartley University College at Southampton (now Southampton University) taking an external BSc in 1913 with the University of London. After a brief time with Imperial College, London and some war service, as a scientist, Ingold earned an MSc degree, again with the University of London. He returned to Imperial College for work with Jocelyn Field Thorpe, and was awarded a PhD in 1918 and a DSc in 1921.

Ingold married Dr. Hilda Usherwood, a fellow chemist with whom he collaborated, in 1923. They had two daughters and a son, the chemist Keith Ingold.

In 1924, Ingold moved to Leeds University where he spent six years as Professor of Organic Chemistry. He returned to London in 1930, and served for 24 years as Head of the chemistry department at University College London, from 1937 until his retirement in 1961.

During his study of alkyl halides, Ingold found evidence for two possible reaction mechanisms for nucleophilic substitution reactions. He found that most secondary and tertiary alkyl halides underwent a two-step mechanism (SN1) while most primary alkyl halides underwent a one-step mechanism (SN2). This conclusion was based on the finding that reactions of most secondary and tertiary alkyl halides with nucleophiles were dependent on the concentration of the alkyl halide only. Meanwhile he discovered that primary alkyl halides, when reacting with nucleophiles, depend on both the concentration of the alkyl halide and the concentration of the nucleophile.
  


EDUCATION +VE

EDUCATION +VE
Online Enterprises Gain Foothold as Path to a College Degree 


ThHarvard and Ohio State are not going to disappear any time soon. But a host of new online enterprises are making earning a college degree cheaper, faster and flexible enough to take work experience into account. As Wikipedia upended the encyclopedia industry and iTunes changed the music business, these businesses have the potential to change higher education.

Ryan Yoder, 35, a computer programmer who had completed 72 credits at the University of South Florida years ago, signed up with an outfit called Straighterline, paid $216 to take two courses in accounting and one in business communication, and a month later transferred the credits to Thomas Edison State College in New Jersey, which awarded him a bachelor’s degree in June.

Alan Long, 34, a paramedic and fire captain, used another new institution, Learning Counts, to create a portfolio that included his certifications and a narrative spelling out what he had learned on the job. He paid $750 to Learning Counts and came out with seven credits at Ottawa University in Kansas, where he would have had to spend $2,800 to earn them in a traditional classroom.

And Erin Larson, who has four children and works full time at a television station but wanted to become a teacher, paid $3,000 per semester to Western Governors University for as many classes as she could handle — plus a weekly call from a mentor. “Anywhere else, it would have cost three arms and legs,” said Ms. Larson, 40, “and as a certified procrastinator, I found that weekly call very useful.”

For those who have the time and money, the four-year residential campus still offers what is widely considered the best educational experience. Critics worry that the online courses are less rigorous and more vulnerable to cheating, and that their emphasis on providing credentials for specific jobs could undermine the traditional mission of encouraging critical thinking.

Thursday, 25 August 2011

Famous Scientist

Famous Scientist



William Lipscom

William Nunn Lipscomb, Jr. (December 9, 1919 – April 14, 2011)[2] was a Nobel Prize-winning American inorganic and organic chemist working in nuclear magnetic resonance, theoretical chemistry, boron chemistry, and biochemistry. Lipscomb was born in Cleveland, Ohio. His family moved to Lexington, Kentucky in 1920,[1] and he lived there until he received his Bachelor of Science degree in Chemistry at the University of Kentucky in 1941. He went on to earn his Doctor of Philosophy degree in Chemistry from the California Institute of Technology in 1946.

From 1946 to 1959 he taught at the University of Minnesota. From 1959 to 1990 he was a professor of chemistry at Harvard University, where he was a professor emeritus since 1990.

Lipscomb resided in Cambridge, Massachusetts until his death in 2011 from pneumonia. In grade school Lipscomb studied somewhat independently, collecting animals, insects, pets, rocks, and minerals. Interest in astronomy led him to visitor nights at the Observatory of the University of Kentucky, where Prof. H. H. Dowing gave him a copy of Baker's Astronomy. Lipscomb credits gaining many intuitive physics concepts from this book and from his conversations with Dowing, who became Lipscomb's life long friend.

The young Lipscomb undertook other projects, such as morse-coded messages over wires and crystal radio sets, with five nearby friends who became physicists, physicians, and an engineer.

At age of 12, Lipscomb was given a small Gilbert chemistry set, He expanded it by ordering apparatus and chemicals from suppliers and by using his father's privilege as a physician to purchase chemicals at the local drugstore at a discount. Lipscomb made his own fireworks and entertained visitors with color changes, odors, and explosions. His mother questioned his chemistry hobby only once, when he attempted to isolate a large amount of urea from the natural product.

Lipscomb credits perusing the large medical texts in his physician father's library and the influence of Linus Pauling years later to his undertaking biochemical studies in his later years. Had Lipscomb become a physician like his father, he would have been the fourth physician in a row along the Lipscomb male line.Lipscomb's high-school chemistry teacher, Frederick Jones, gave Lipscomb his college books on organic, analytical and general chemistry, and asked only that Lipscomb take the examinations. During the class lectures, Lipscomb in the back of the classroom did research that he thought was original (but he later found was not): the preparation of hydrogen from sodium formate (or sodium oxalate) and sodium hydroxide. The work was careful, including gas analyses and searching for probable side reactions.
 

Better 'Photon Loops' May Be Key to Computer and Physics Advances

  Better 'Photon Loops' May Be Key to Computer and Physics Advances


 Surprisingly, transmitting information-rich photons thousands of miles through fiber-optic cable is far easier than reliably sending them just a few nanometers through a computer circuit. However, it may soon be possible to steer these particles of light accurately through microchips because of research performed at the Joint Quantum Institute of the National Institute of Standards and Technology (NIST) and the University of Maryland, together with Harvard University.The scientists behind the effort say the work not only may lead to more efficient information processors on our desktops, but also could offer a way to explore a particularly strange effect of the quantum world known as the quantum Hall effect in which electrons can interfere with themselves as they travel in a magnetic field. The corresponding physics is rich enough that its investigation has already resulted in three Nobel Prizes, but many intriguing theoretical predictions about it have yet to be observed.

The advent of optical fibers a few decades ago made it possible for dozens of independent phone conversations to travel long distances along a single glass cable by, essentially, assigning each conversation to a different color-each narrow strand of glass carrying dramatic amounts of information with little interference.

Ironically, while it is easy to send photons far across a town or across the ocean, scientists have a harder time directing them to precise locations across short distances-say, a few hundred nanometers-and this makes it difficult to employ photons as information carriers inside computer chips.

"We run into problems when trying to use photons in microcircuits because of slight defects in the materials chips are made from," says Jacob Taylor, a theoretical physicist at NIST and JQI. "Defects crop up a lot, and they deflect photons in ways that mess up the signal."

These defects are particularly problematic when they occur in photon delay devices, which slow the photons down to store them briefly until the chip needs the information they contain. Delay devices are usually constructed from a single row of tiny resonators, so a defect among them can ruin the information in the photon stream. But the research team perceived that using multiple rows of resonators would build alternate pathways into the delay devices, allowing the photons to find their way around defects easily.

As delay devices are a vital part of computer circuits, the alternate-pathway technique may help overcome obstacles blocking the development of photon-based chips, which are still a dream of computer manufacturers. While that application would be exciting, lead author Mohammad Hafezi says the prospect of investigating the quantum Hall effect with the same technology also has great scientific appeal.