News tagged with energy state
US and Spain discuss cleanup of nuclear radiation
The United States is offering technical assistance to Spain to clean up land contaminated by radiation from undetonated nuclear bombs that accidentally fell on the area in 1966, the US State Department announced ...
Feb 05, 2012 |
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Foldit gamers improve protein design through crowdsourcing
(PhysOrg.com) -- Gamers on Foldit have succeeded in improving the catalyst abilities of an enzyme, making it 18-fold more active than the original version. The idea is the brainchild of University of Washington ...
Jan 25, 2012 |
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New material for thermonuclear fusion reactors
Scientists at Universidad Carlos III de Madrid, Oxford University and the University of Michigan have joined efforts to develop new materials for thermonuclear fusion reactors. Their research focuses on characterization ...
Jan 09, 2012 |
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New spectroscopy technique enables investigation of two-dimensional electron states
Understanding and visualizing the energy states of electrons in a crystal provides important insights into many modern electronic materials, such as superconductors, or other materials that physicists can ...
Dec 22, 2011 |
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Fingerprinting uranium: X-rays identify mobile, stationary forms of atomic pollutant
(PhysOrg.com) -- Determining if uranium will zip through the soil or not is easier now, thanks to scientists at Pacific Northwest National Laboratory and the University of North Texas. Dr. Eugene Ilton and ...
Chemistry / Analytical Chemistry
Dec 19, 2011 |
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Small reactors could figure into US energy future
A newly released study from the Energy Policy Institute at the University of Chicago (EPIC) concludes that small modular reactors may hold the key to the future of U.S. nuclear power generation.
Technology / Energy & Green Tech
Dec 13, 2011 |
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Chu: New materials could be transformative
In a talk rich with historical examples, U.S. Secretary of Energy Steven Chu made a strong case Wednesday that the right policies — and concerted efforts by the nation’s engineers and scientists — could once ...
Technology / Energy & Green Tech
Dec 02, 2011 |
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Research indicates China's demand for oil will equal US demand by 2040
Despite aggressive demand-management policies announced in recent years, China's oil use could easily reach levels comparable to today's U.S. levels by 2040, according to a new energy study by the Baker Institute.
Technology / Energy & Green Tech
Dec 01, 2011 |
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Half of greenhouse gases 'emitted by five nations'
More than half of all carbon pollution released into the atmosphere comes from five countries, according to a national ranking of greenhouse gas emissions released Thursday.
Dec 01, 2011 |
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Scientists invent long-lasting, near infrared-emitting material
Materials that emit visible light after being exposed to sunlight are commonplace and can be found in everything from emergency signage to glow-in-the-dark stickers. But until now, scientists have had little ...
Nanotechnology / Nanomaterials
Nov 20, 2011 |
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Research team shows nuclear clock could be 60 times more accurate than atomic clock
(PhysOrg.com) -- For almost sixty years, the world has considered the atomic clock the gold standard for keeping time. Its accuracy is such that it drifts by only about four seconds over a period of about ...
Nov 09, 2011 |
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New knowledge about 'flawed' diamonds could speed the development of diamond-based quantum computers
A University at Buffalo-led research team has established the presence of a dynamic Jahn-Teller effect in defective diamonds, a finding that will help advance the development of diamond-based systems in applications ...
Oct 11, 2011 |
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Laser light used to cool object to quantum ground state
For the first time, researchers at the California Institute of Technology (Caltech), in collaboration with a team from the University of Vienna, have managed to cool a miniature mechanical object to its lowest ...
Oct 05, 2011 |
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Advance offers new opportunities in chemistry education, research
Researchers at Oregon State University have created a new, unifying method to describe a basic chemical concept called "electronegativity," first described almost 80 years ago by OSU alumnus Linus Pauling ...
Oct 04, 2011 |
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Tevatron retires: The era of big American physics about to end
The era of big American physics ends Friday with the retirement of the Tevatron particle accelerator, which has been recreating the Big Bang under four miles of Illinois prairie for 25 years.
Sep 26, 2011 |
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Energy level
A quantum mechanical system or particle that is bound, confined spatially, can only take on certain discrete values of energy, as opposed to classical particles, which can have any energy. These values are called energy levels. The term is most commonly used for the energy levels of electrons in atoms or molecules, which are bound by the electric field of the nucleus. The energy spectrum of a system with energy levels is said to be quantized.
If the potential energy is set to zero at infinity, the usual convention, then bound electron states have negative potential energy.
Energy levels are said to be degenerate, if the same energy level is obtained by more than one quantum mechanical state. They are then called degenerate energy levels.
For more information about Energy level, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
