News tagged with subatomic particles
For One Tiny Instant, Physicists May Have Broken a Law of Nature
(PhysOrg.com) -- For a brief instant, it appears, scientists at Brookhaven National Laboratory on Long Island recently discovered a law of nature had been broken.
Mar 19, 2010 |
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Roll over Einstein: Law of physics challenged (Update 3)
One of the very pillars of physics and Einstein's theory of relativity - that nothing can go faster than the speed of light - was rocked Thursday by new findings from one of the world's foremost laboratories.
Sep 22, 2011 |
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Time reversal: A simple particle could reveal new physics
(PhysOrg.com) -- A simple atomic nucleus could reveal properties associated with the mysterious phenomenon known as time reversal and lead to an explanation for one of the greatest mysteries of physics: the ...
Oct 11, 2011 |
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'Cold fusion' rebirth? New evidence for existence of controversial energy source
Researchers are reporting compelling new scientific evidence for the existence of low-energy nuclear reactions (LENR), the process once called "cold fusion" that may promise a new source of energy. One group ...
Mar 23, 2009 |
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Hunt for dark matter closes in at Large Hadron Collider
(PhysOrg.com) -- Physicists are closer than ever to finding the source of the Universe's mysterious dark matter, following a better than expected year of research at the Compact Muon Solenoid (CMS) particle ...
Jan 26, 2011 |
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New way to calculate the effects of Casimir forces
(PhysOrg.com) -- MIT researchers have developed a powerful new tool for calculating the effects of Casimir forces, complicated quantum forces that affect only objects that are very, very close together, with ...
May 11, 2010 |
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Hunt for Higgs boson: Mass of top quark narrows search
(PhysOrg.com) -- New high-energy particle research by a team working with data from Fermi National Accelerator Laboratory further heightens the uncertainty about the exact nature of a key theoretical component ...
Dec 07, 2009 |
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Landmark calculation clears the way to answering how matter is formed
(Phys.org) -- An international collaboration of scientists, including Thomas Blum, associate professor of physics, is reporting in landmark detail the decay process of a subatomic particle called a kaon – ...
May 25, 2012 |
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Can fluid dynamics offer insights into quantum mechanics?
In the first decades of the 20th century, physicists hotly debated how to make sense of the strange phenomena of quantum mechanics, such as the tendency of subatomic particles to behave like both particles ...
Oct 20, 2010 |
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Researchers discover how key enzyme repairs sun-damaged DNA
Researchers have long known that humans lack a key enzyme -- one possessed by most of the animal kingdom and even plants -- that reverses severe sun damage.
Medicine & Health / Medical research
Jul 25, 2010 |
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IceCube spies unexplained pattern of cosmic rays
(PhysOrg.com) -- Though still under construction, the IceCube Neutrino Observatory at the South Pole is already delivering scientific results - including an early finding about a phenomenon the telescope was ...
Jul 27, 2010 |
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New picture of atomic nucleus emerges
(PhysOrg.com) -- When most of us think of an atom, we think of tiny electrons whizzing around a stationary, dense nucleus composed of protons and neutrons, collectively known as nucleons. A collaboration between ...
Mar 02, 2012 |
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World's best measurement of W boson mass tests Standard Model, Higgs boson limits
(PhysOrg.com) -- Just as firemen use different methods to narrow the location of a person trapped in a building, scientists employ two techniques to find the hiding place of the theorized Higgs particle: direct ...
Feb 23, 2012 |
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Nonlinear thinker: Making sense of previously insoluble problems
If an airplane is cruising along and raises the flaps on its wings a degree or two, it will tilt upward. If it raises the flaps twice as much, it will tilt upward about twice as much. But if it tilts upward ...
Jan 29, 2010 |
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Extra large carbon
An exotic form of carbon has been found to have an extra large nucleus, dwarfing even the nuclei of much heavier elements like copper and zinc, in experiments performed in a particle accelerator in Japan. ...
Feb 09, 2010 |
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Subatomic particle
In physics, subatomic particles are the particles composing nucleons and atoms. There are two types of subatomic particles: elementary particles, which are not made of other particles, and composite particles. Particle physics and nuclear physics study these particles and how they interact.
Elementary particles of the Standard Model include:
Composite subatomic particles (such as protons or atomic nuclei) are bound states of two or more elementary particles. For example, a proton is made of two up quarks and one down quark, while the atomic nuclei of helium-4 is composed of two protons and two neutrons. Composite particles include all hadrons. These, in turn, are composed of baryons (e.g., protons and neutrons) and mesons (e.g., pions and kaons).
There are hundreds of known subatomic particles. Most are either the result of cosmic rays interacting with matter, or have been produced by scattering processes in particle accelerators.[citation needed]
For more information about Subatomic particle, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
