(Press-News.org) They achieved this by utilising the phenomena of objects moving slower and shortening in length from Einstein's theory of relativity, along with two pieces of gold foil and a micrometre screw.
In Niels Bohr's model of the atom, electrons orbit the nucleus in 'shells' – the so-called stationary states. Light is emitted by a quantum leap between a high-lying shell and one nearer the nucleus. However, it is impossible to find the electron between the two shells, so it could be thought that the light emission process itself was instantaneous: the electron is in the outer shell and immediately after sending out light, it is in the inner one.
However, Associate Professor Ulrik I. Uggerhøj, PhD student Kristoffer K. Andersen, Aarhus University, and the other NA63 members actually found that it takes the electron a measurable amount of time to emit light.
By letting the electron pass two very flat gold foils stretched out at a distance that can be measured with a precision of a few micrometres, they can 'force' the electron to emit shortwave light in a well-defined area. The distance between the foils corresponds to the length taken to form the light.
The results have been published in the journal Physical Review Letters under 'highlights'.
INFORMATION:
Read more at http://prl.aps.org/abstract/PRL/v108/i7/e071802
Direct measurement of the formation length of photons
Using a rather simple mechanical technique, scientists from the CERN NA63 collaboration have measured the photon formation length for radiation emitted by electrons
2012-02-29
ELSE PRESS RELEASES FROM THIS DATE:
Social responsibility of businesses questioned
2012-02-29
When the Icelandic banking system was privatised in 2003, it inaugurated a period of furious expansion of both loans and risky investments. The bubble burst in 2008. At that time, the nominal assets of the three largest banks was 14 times bigger than Iceland's entire GDP.
The crash shook Icelandic society to its foundations with mass bankruptcy, drastic increases in unemployment, loss of savings, increased indebtedness and raised taxes. Deteriorating health care and emigration of highly educated people are other consequences that will affect Iceland for a long time to ...
Blue Tax Inc. and Professional Bull Rider Ryan Dirteater Announce Partnership
2012-02-29
Blue Tax Inc. announced that they have reached an agreement with Professional Bull Rider Ryan Dirteater to be his Official Helmet Sponsor.
Blue Tax Inc. will activate the partnership through a camera-visible rider's helmet during the PBR's Built Ford Tough Series events in Glendale, Ariz.; Indianapolis; Uncasville, Conn.; Boise, Idaho; and Pueblo, Colo.
Blue Tax will provide three custom-painted helmets for Dirteater to wear during his quest to win the PBR World Championship.
"Blue Tax Inc. approached me and said that I was a rider that they wanted to put ...
Study shows how the brain responds to deceptive advertising
2012-02-29
Several specific regions of our brains are activated in a two-part process when we are exposed to deceptive advertising, according to new research conducted by a North Carolina State University professor. The work opens the door to further research that could help us understand how brain injury and aging may affect our susceptibility to fraud or misleading marketing.
The study utilized functional magnetic resonance imaging (fMRI) to capture images of the brain while study participants were shown a series of print advertisements. The fMRI images allowed researchers to ...
Eye movement not engaged in arms race, NYU researchers find
2012-02-29
We make our eye movements earlier or later in order to coordinate with movements of our arms, New York University neuroscientists have found. Their study, which appears in the journal Neuron, points to a mechanism in the brain that allows for this coordination and may have implications for rehabilitation and prosthetics.
Researchers have sought to understand the neurological processes behind eye and arm movements. For example, when you reach for an object, what goes on in our brains so that our eyes and arms are in sync? Such coordination is central to the way different ...
Fewer women need repeat breast cancer surgeries with new service at University of Michigan
2012-02-29
ANN ARBOR, Mich. — Nearly one in three women who have breast cancer surgery will need to return to the operating room for additional surgery after the tumor is evaluated by a pathologist.
A new service at the University of Michigan Comprehensive Cancer Center cuts that number drastically by having pathologists on-site in the operating suite to assess tumors and lymph nodes immediately after they are removed. Meanwhile, the surgeon and patient remain in the operating room until the results are back, and any additional operating can be done immediately.
This cut the number ...
The end of the 'Lily of the Valley phenomenon' in sperm research?
2012-02-29
According to a 2003 study by German and American scientists, a component of the Lily of the Valley scent known as Bourgeonal alters the calcium balance of human sperm and attracts the sperm. The "Lily of the Valley phenomenon" – also the title of a book about smelling – was born as a result of this discovery that sperm act as swimming olfactory cells which follow a "scent trail" laid by the egg. However, a detailed explanation for the Lily of the Valley phenomenon remained illusive as neither Bourgeonal nor other scents could be identified in the female sex organ. Scientists ...
Fanz Media Group Inc. Announces the Launch of fanz.com, the World's First Sports Network to Instantly Connect Millions of Sports Fans Across Social and Traditional Media
2012-02-29
Fanz Media Group Inc. announced today the launch of fanz.com a social network specifically focused on sports enthusiasts. Web and social media experts, and the gurus of sports media have come together to create the ultimate network of sports fans. Fanz.com is an open forum specifically for any and every sport. Any sport you can think of, fanz.com instantly connects you with the multimedia and social streams and allows instant interaction with other sports fans from around the globe.
Fanz.com is a sports network that provides one click content feeds and real time interaction ...
Are my twins identical?
2012-02-29
Parents may be misinformed during prenatal scans on whether their twins are identical or non-identical, say UCL researchers in a new commentary piece published today (29 February) in BJOG: An International Journal of Obstetrics and Gynaecology.
Determining if same-sex twins are identical or non-identical (from one egg or two; monozygotic or dizygotic) is not always straight forward, say the researchers. They looked at data from the Gemini study, a birth cohort of 2402 families with twins born in England and Wales in 2007.
Parents of same sex twins (1586) were asked ...
Making the most of what you have
2012-02-29
The bacterium Mycoplasma pneumoniae, which causes atypical pneumonia, is helping scientists uncover how cells make the most of limited resources. By measuring all the proteins this bacterium produces, scientists at the European Molecular Biology Laboratory (EMBL) in Heidelberg, Germany, and collaborators, have found that the secret is fine-tuning.
Like a mechanic can fine-tune a car after it has left the factory, cells have ways to tweak proteins, changing their chemical properties after production – so-called post-translational modifications. Anne-Claude Gavin, Peer ...
Nurses key in helping new cancer patients overcome fears
2012-02-29
EAST LANSING, Mich. — Often faced with overwhelming anxiety, patients newly diagnosed with lung cancer can find themselves in distress, and new research recommends nurses play a key role in alleviating concerns, leading to a better quality of life for patients.
A diagnosis of lung cancer – the leading cause of cancer death in the United States – brings with it high levels of stress and raises existential issues and death-related thoughts and concerns in patients, said Rebecca H. Lehto, assistant professor in the College of Nursing at Michigan State University.
In a ...
LAST 30 PRESS RELEASES:
Effectiveness and cost-effectiveness of automated external defibrillators in private homes
University of Phoenix College of Social and Behavioral Sciences leadership publishes white paper on trauma-informed education
Microbial iron mining: turning polluted soils into self-cleaning reactors
Molecular snapshots reveal how the body knows it’s too hot
Analysis finds alarming rise in severe diverticulitis among younger Americans
Mitochondria and lysosomes reprogram immune cells that dampen inflammation
Cockroach infestation linked to home allergen, endotoxin levels
New biochar-powered microbial systems offer sustainable solution for toxic pollutants
Identifying the best high-biomass sorghum hybrids based on biomass yield potential and feedstock quality affected by nitrogen fertility management under various environments
How HIV’s shape-shifting protein reveals clues for smarter drug design
Study identifies viral combinations that heighten risk of severe respiratory illnesses in infants
Aboveground rather than belowground productivity drives variability in miscanthus × giganteus net primary productivity
Making yeast more efficient 'cell factories' for producing valuable plant compounds
Aging in plain sight: What new research says the eyes reveal about aging and cardiovascular risk
Child welfare system involvement may improve diagnosis of developmental delays
Heavier electric trucks could strain New York City’s roads and bridges, study warns
From womb to world: scientists reveal how maternal stress programs infant development
Bezos Earth Fund grants $2M to UC Davis and American Heart Association to advance AI-designed foods
Data Protection is transforming humanitarian action in the digital age, new book shows
AI unlocks the microscopic world to transform future manufacturing
Virtual reality helps people understand and care about distant communities
Optica Publishing Group announces subscribe to open pilot for the Journal of the Optical Society of America B (JOSA B)
UNF partners with Korey Stringer Institute and Perry Weather to open heat exercise laboratory on campus
DNA from Napoleon’s 1812 army identifies the pathogens likely responsible for the army’s demise during their retreat from Russia
Study suggests two unsuspected pathogens struck Napoleon's army during the retreat from Russia in 1812
The 25-year incidence and progression of hearing loss in the Framingham offspring study
AI-driven nanomedicine breakthrough paves way for personalized breast cancer therapy
Fight or flight—and grow a new limb
Augmenting electroencephalogram transformer for steady-state visually evoked potential-based brain–computer interfaces
Coaches can boost athletes’ mental toughness with this leadership style
[Press-News.org] Direct measurement of the formation length of photonsUsing a rather simple mechanical technique, scientists from the CERN NA63 collaboration have measured the photon formation length for radiation emitted by electrons


