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Comment by Dr. Krishna Kumari Challa on February 28, 2014 at 6:49am

Dropleton—a “Quantum Droplet” That Acts Like a Liquid
Physicists in Germany and the US have created a new composite "quasiparticle" that could help probe the quantum mechanics of many particles working together.
It behaves a bit like a liquid droplet and described it as a quasiparticle - an amalgamation of smaller types of particles. It
could be useful in the development of nanotechnology, including the design of optoelectronic devices. These include things like the semiconductor lasers used in Blu-ray disc players.

The microscopic quantum droplet does not dawdle. In the physicists' experiments using an ultra-fast laser emitting about 100 million pulses per second, the quantum droplet appeared for only about 2.5 billionths of a second.

That does not sound like much, but the scientists said it is stable enough for research on how light interacts with certain types of matter.

A previously known example of a quasiparticle is the exciton, a pairing of an electron and a "hole" - a place in the material's energy structure where an electron could be located but is not.

The quantum droplet is made up of roughly five electrons and five holes. It possesses some characteristics of a liquid, like having ripples, the scientists said.

Quantum physics is a branch of physics that relates to events taking place on the tiniest scale. It is essential in describing the structure of atoms.

Particles are the basic building blocks of matter. They include things like subatomic entities such as electrons, protons, neutrons and quarks. Only rarely are new ones found. The laser experiments were performed using a semiconductor of the elements gallium and arsenic, revealing the new particle, albeit fleetingly.

"The effects that give rise to the formation of dropletons also influence the electrons in optoelectronic devices such as laser diodes," physicist Mackillo Kira of the University of Marburg in Germany, one of the researchers.

Agencies

Comment by Dr. Krishna Kumari Challa on February 27, 2014 at 8:11am

Children of older dads face more health problems
Children with older fathers are significantly more likely to develop conditions such as autism, ADHD and bipolar disorder and consider suicide, according an analysis of 2.6 million people’s health records.
Scientists at Indiana University found that a child born when their father is 45 was 3.5 times more likely to have autism, 13 times more likely to have ADHD and 25 times more likely to have bipolar disorder than the child of a 24-year-old man.

Suicidal behaviour and substance misuse was twice as likely, according to the study, which is published today in the journal JAMA Psychiatry
http://www.independent.co.uk/news/science/children-of-older-dads-fa...

Comment by Dr. Krishna Kumari Challa on February 27, 2014 at 8:09am

Scientists demonstrate first contagious airborne WiFi virus

Researchers at the University of Liverpool have shown for the first time that WiFi networks can be infected with a virus that can move through densely populated areas as efficiently as the common cold spreads between humans. The team designed and simulated an attack by a virus, called "Chameleon," and found that not only could it spread quickly between homes and businesses, but it was able to avoid detection and identify the points at which WiFi access is least protected by encryption and passwords.
http://esciencenews.com/articles/2014/02/26/scientists.demonstrate....

Comment by Dr. Krishna Kumari Challa on February 27, 2014 at 6:58am

What Is Bitcoin and Its Current Crisis?
http://www.scientificamerican.com/article/what-is-bitcoin-and-its-c...

Comment by Dr. Krishna Kumari Challa on February 27, 2014 at 6:24am

The Science Is In: Elephants Are Even Smarter Than We Realized
We now have solid evidence that elephants are some of the most intelligent, social and empathic animals around—so how can we justify keeping them in captivity?
http://www.scientificamerican.com/article/the-science-is-in-elephan...

Comment by Dr. Krishna Kumari Challa on February 26, 2014 at 9:59am

Dim lighting helps people make better decisions, scientists claim
scientists now claim that by harnessing the subduing effect on emotions caused by dim lights.

Therefore, by dimming the lights, people become more rational, negotiate better and are therefore able to make better decisions.

Alison Jing Xu, assistant professor of management at University of Toronto Scarborough and Aparna Labroo of Northwestern University, made the findings by examining the link between lighting and human emotion, PsychCentral reported.
http://www.independent.co.uk/news/science/dim-lighting-helps-people...

Comment by Dr. Krishna Kumari Challa on February 26, 2014 at 6:59am

The Golden Goose Award is a new award that recognizes scientists and engineers whose federally funded research has had significant human and economic benefits
http://www.goldengooseaward.org/

Comment by Dr. Krishna Kumari Challa on February 26, 2014 at 6:54am

http://alberteinstein.info/vufind1/Record/EAR000034354

http://alberteinstein.info/vufind1/Digital/EAR000034354#page/1/mode...

Einstein's Lost Theory Uncovered

  Einstein explored the idea of a steady-state universe in 1931

A manuscript that lay unnoticed by scientists for decades has revealed that Albert Einstein once dabbled with an alternative to the Big Bang theory, proposing instead that the Universe expanded steadily and eternally. The recently uncovered work, written in 1931, is reminiscent of a theory championed by British astrophysicist Fred Hoyle nearly 20 years later. Einstein soon abandoned the idea, but the manuscript reveals his continued hesitance to accept that the Universe was created during a single explosive event.

The Big Bang theory had found observational support in the 1920s, when US astronomer Edwin Hubble and others discovered that distant galaxies are moving away and that space itself is expanding. This seemed to imply that, in the past, the contents of the observable Universe had been a very dense and hot ‘primordial broth’.

But, from the late 1940s, Hoyle argued that space could be expanding eternally and keeping a roughly constant density. It could do this by continually adding new matter, with elementary particles spontaneously popping up from space, Hoyle said. Particles would then coalesce to form galaxies and stars, and these would appear at just the right rate to take up the extra room created by the expansion of space. Hoyle’s Universe was always infinite, so its size did not change as it expanded. It was in a ‘steady state’.

The newly uncovered document shows that Einstein had described essentially the same idea much earlier. “For the density to remain constant new particles of matter must be continually formed,” he writes. The manuscript is thought to have been produced during a trip to California in 1931 — in part because it was written on American note paper.

Source: Nature

Comment by Dr. Krishna Kumari Challa on February 25, 2014 at 9:55am

The Flame Challenge for the scientists!
The Flame Challenge is an international contest started by Alan Alda that asks scientists to communicate complex science in ways that would interest and enlighten an 11-year-old.
“The Flame Challenge has grown from scientists trying to answer the question of one 11-year old from many decades ago, to tackling questions on the minds of thousands of current 11-year olds from around the world,” according to Alda. “I’m in awe of the scientists who can bring clarity to these questions and I’m in awe of the kids who keep the scientists on their toes.”
After screening for scientific accuracy, the entries are judged by thousands of 11-year-olds in schools around the world!

http://www.centerforcommunicatingscience.org/the-flame-challenge-2/...

Comment by Dr. Krishna Kumari Challa on February 25, 2014 at 9:14am

Research without fixed boundaries

There can be strong academic resistance to interdisciplinarity

Better communication, reformed education and new frameworks can help

But is there a risk of creating new boundaries and maintaining old divisions?
http://www.scidev.net/global/education/editorials/research-without-...

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