ALPHA PARTICLE

one of the three types of radiation resulting from natural radioactivity. Alpha radiation (or alpha rays) was distinguished and named by E. R. Rutherford in 1909, who found by measuring the charge and mass of alpha particles that they are the nuclei of ordinary helium atoms. Alpha particles consist of two protons and two neutrons (see nucleus).

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The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Alpha Particle
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books on: Alpha Particle  - 313 results

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1.
The Great Design: Particles, Fields, and Creation
Book by Robert K. Adair; Oxford University Press, 1989
Subjects: Field Theory (Physics), Particles (Nuclear Physics), Physics
...the energy of the alpha particle in the...model of a free alpha particle moving inside the nucleus. An alpha particle inside a uranium...radioactivity. Waves to Particles--Photons According...c holds for a particle of zero mass 13...expected for massless particles traveling at the...
2.
Particles: On the Syntax of Verb-Particle, Triadic, and Causative Constructions
Book by Marcel Den Dikken; Oxford US, 1995
Subjects: Causative (Linguistics), Grammar, Comparative And General--Particles, Grammar, Comparative And General--Syntax, Grammar, Comparative And General--Verb
...Movement: The Position of Particles in the Verbal Cluster in Dutch...the OTS/HIL Workshop on Particle Constructions , Utrecht...Weissenborn 1994 . Picking up Particles . Paper delivered at the 19th...the OTS/HIL Workshop on Particle Constructions , Utrecht...Universal Word Induction vs. Move Alpha". In Linguistic Analysis...
3.
Bible and Computer: The Stellenbosch AIBI-6 Conference: Proceedings of the Association Internationale Bible et Informatique, "From Alpha to Byte", University of Stellenbosch, 17-21 July, 2000
Book by Johann Cook; Brill, 2002
Subjects: Bible--Criticism, Interpretation, Etc--Data Processing--Congresses
Verse I introduces the particle ;: 1 followed by a nominal clause...find an interrogative clause with a particle affecting two clauses. From verse...text break. In verse 7 we fmd the particle : 1Q! P7 preceded by a sequence w...
4.
Alpha to Omega: The Life & Times of the Greek Alphabet
Book by Alexander Humez, Nicholas Humez; David R. Godine, 1983
Subjects: Greek Language--Alphabet
...nominative singular ending of second declension nouns in Greek . Ever since Newton, physicists had wanted to come up with a light particle that would do for illumination what the atom from Greek atomos, "uncut, indivisible" from temnein, "to cut" had done...
5.
Drones, Clones, and Alpha Babes: Retrofitting Star Trek's Humanism, Post-9/11
Book by Diana M. A. Relke; University of Calgary Press, 2006
Subjects: Star Trek Television Programs, Star Trek Television Programs--Social Aspects
...the Borg into battle. Janeway extracts a confession from the two Brunali: Icheb is fighting for his people, who dont have particle weapons or powerful starships at their disposal, and so are forced to use the only resource they have: their genetic expertise...
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journal articles on: Alpha Particle  - 291 results

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1.
Effects of Submicrometer Particle Compositions on Cytokine Production and Lipid Peroxidation of Human Bronchial Epithelial Cells
Journal article by Song-Lih Huang, Miao-Kan Hsu, Chang-Chuan Chan; Environmental Health Perspectives, Vol. 111, 2003
...OMITTED Results of particle-induced cytokine...induced higher TNF-alpha production than particles of the other two...model. TNF-alpha production induced by untreated particles in macrophages...with any of the particle components; however...components. The particle-induced cytokine...submicrometer particles and least for...5. For TNF-alpha production in...
2.
Filtering Via Simulation: Auxiliary Particle Filters
Journal article by Michael K. Pitt, Neil Shephard; Journal of the American Statistical Association, Vol. 94, 1999
Subjects: Filters (Mathematics)--Research, Mathematical filters--Research, Time series analysis--Methods, Time-series analysis--Methods
...conclusions in Section 5. 2. PARTICLE FILTERS 2.1 Definition of Particle Filters Particle filters are the class of...filtering random variable Alpha.sub.t where Y.sub...sub.t)prime by "particles" Mathematical Expression...
3.
A Pilot Investigation of the Relative Toxicity of Indoor and Outdoor Fine Particles: In Vitro Effects of Endotoxin and Other Particulate Properties
Journal article by Christopher M. Long, Helen H. Suh, Lester Kobzik, Paul J. Catalano, Yao Yu Ning, Petros Koutrakis; Environmental Health Perspectives, Vol. 109, 2001
...interactions between particles and endotoxin which depend on particle properties. Because...Tox.sub.in = alpha.sub.inF...diesel exhaust particles on the release...necrosis factor-alpha from rat alveolar...air pollution particle is metal-dependent...concentrated air particles mediate alveolar...TNF.sub.alpha and MIP-2: role in particle-induced inflammation...
4.
Proinflammatory and Cytotoxic Effects of Mexico City Air Pollution Particulate Matter in Vitro Are Dependent on Particle Size and Composition
Journal article by Alvaro R. Osornio-Vargas, James C. Bonner, Ernesto Alfaro-Moreno, Leticia Martinez, Claudia Garcia-Cuellar, Sergio Ponce-De-Leon Rosales, Javier Miranda, Irma Rosas; Environmental Health Perspectives, Vol. 111, 2003
...vitro are dependent on particle size and composition...associated with these particles. However, PM.sub...Tumor necrosis factor-alpha(TNF-alpha) and...cells, Mexico City, particle composition, particulate...derived growth factor alpha-receptor subtype...the hypothesis that particle composition in different...induced by air pollution particles from two different...
5.
Time Course of Gene Expression of Inflammatory Mediators in Rat Lung after Diesel Exhaust Particle Exposure
Journal article; Environmental Health Perspectives, Vol. 113, 2005
...after Diesel Exhaust Particle Exposure. Diesel exhaust particles (DEPs) at three concentrations...beta1), and TNF-alpha (tumor necrosis factor...Effects of diesel exhaust particles (DEP), carbon black...Effects of diesel exhaust particles on the secretion of...tumor necrosis factor-alpha from rat alveolar macrophages...Effects of diesel exhaust particle extracts on collagen...
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magazine articles on: Alpha Particle  - 65 results

       More magazine Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Seeing the Subatomic with a Cloud Chamber, You Can Actually Watch the Subatomic Radioactive Particles All around You
Magazine article by Theodore Gray; Popular Science, Vol. 266, March 2005
Subjects: DIY, Design of experiments, Do it yourself, Science
...paths of zooming subatomic particles--in a dense fog of alcohol...environment, a high-speed alpha particle (helium nucleus), beta particle (electron), or gamma ray...these pictures, single alpha particles have created trails of bubbles...
2.
Atoms and Eves
Magazine article by Theodore Gray; Popular Science, Vol. 270, June 2007
Subjects: Atoms & subatomic particles, Collectibles, Science history, Zinc sulfide
...Each decaying radium atom sends out a high-energy alpha particle, which slams into zinc sulfide crystals. This triggers...antistatic brush behind the screen right. It sends out alpha radiation strong enough to produce a visible glow...
3.
Big Science!
Magazine article by Gregory Mone, Brooke Borel, Katherine Bagley, Jennifer Abbasi; Popular Science, Vol. 279, August 2011
Subjects: Atoms & subatomic particles, Budgets, Climate change, Cosmic rays, Neptune, Quarks, Science, Sensors, Telescopes
...ISS also plays host to the Alpha Magnetic Spectrometer (AMS...quarks that have been made in particle accelerators but have never...cool. During operation, the particle accelerator in the SNS sends...speed of light. But unlike particles in a collider, neutrons do...ACCELERATOR TO FIND THE ELUSIVE GOD PARTICLE Buried 330 feet beneath the...
4.
A Little Lab Tackles a Big Question
Magazine article by Edyta Zielinska; The Scientist, Vol. 21, July 2007
Subjects: Biologists, Biomedical research, Changes, MSI, Meetings, Particle physics, Proteins, Research & development--R&D, Scientists, Studies
...venture theyve coined the "Alpha Project," after the sex pheromone...Gordon, with a background in particle physics, is the primary author...published 10 papers from the Alpha Project, half of them in Science...2008, the next generation of Alpha - Colman-Lerner calls it Alpha...
5.
Does Antimatter Matter?
Magazine article by Adam Hadhazy; Natural History, Vol. 119, June 2011
Subjects: Atoms & subatomic particles, Particle accelerators, Space stations
...light in the ReIativistic Heavy Ion Collider (RHIC). That particle accelerator, at Brookhaven National Laboratory in Upton...antihelium-4s destruction could serve as a reference point for the Alpha Magnetic Spectrometer, which was delivered to the International...
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newspaper articles on: Alpha Particle  - 16 results

       More newspaper Results: 1-10 11-16 >>  
 
1.
Situation Very Grave, Japan Official Says
Newspaper article; Manila Bulletin, March 29, 2011
Subjects: Electric utilities--International economic relations, Nuclear energy, Tokyo Electric Power Company Inc., Tsunamis--Japan
...and is a nasty actor."When plutonium decays, it emits what is known as an alpha particle, a relatively big particle that carries a lot of energy. When an alpha particle hits body tissue, it can damage the DNA of a cell and lead to a cancer...
2.
`Smart-Bomb' Cancer Therapy Tested
Newspaper article by Joyce Howard Price; The Washington Times, November 16, 2001
...atomic fragments - known as alpha particles - inside cancer cells. In...lived, highly energized alpha particles that stream through cancer...well, which also emit alpha particles that can be lethal to nearby...cell can release an alpha particle that can kill a cell, so...
3.
Classic Experiments, Clay Feet, Doughnuts
Newspaper article; The Washington Times, February 22, 2004
...measured the charge on the electron. Ernest Rutherfords alpha-particle-scattering experiment showed that the atom was mostly empty...convincing manner the central mystery of quantum theory - particles that sometimes seem to be points also behave like waves that...
4.
Exploring Frontiers of Science; Shuttle's Last Flight Could Cede Space Dominance to China
Newspaper article; The Washington Times (Washington, DC), June 1, 2011
Subjects: Space shuttles
...is scheduled to return to Earth Wednesday after its final mission. Installation of the Alpha Magnetic Spectrometer (ASM), a state-of-the-art particle physics detector, on the International Space Station during its 16-day mission shows...
5.
Endeavour Blasts Off
Newspaper article; Coffs Coast Advocate (Coffs Harbour, Australia), May 18, 2011
Subjects: Space shuttles
...30, returning to the United States on June 1, the US space agency said. The Alpha Magnetic Spectrometer-2 (AMS-02), a $1.9 billion, 7000 kilogram particle detector, will be left behind to scour the universe for hints of dark matter...
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encyclopedia articles on: Alpha Particle  - 22 results

       More encyclopedia Results: 1-10 11-20 21-22 >>  
 
1.
Alpha Particle
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
ALPHA PARTICLE one of the three types of radiation resulting from...who found by measuring the charge and mass of alpha particles that they are the nuclei of ordinary helium atoms. Alpha particles consist of two protons and two neutrons...
2.
Particle Accelerator
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...enough energy to create new particles. Besides pure research...A majority of the worlds particle accelerators are situated...and Serpukhov. Design of Particle Accelerators There are many...features in common. Only charged particles (most commonly protons and...antiparticles ; less often deuterons, alpha particles, and heavy ions...
3.
Beta Particle
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
BETA PARTICLE one of the three types...electrons . Unlike alpha and gamma particles, whose energy can...after emission, beta particles emerge with a variable...a second undetected particle, the neutrino , is...also called a beta particle and denoted by...
4.
Nucleus , in Physics
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...represented by 1 H 1 , an alpha particle (a helium nucleus...nucleus with alpha particles and resulted in an...target of gold foil with alpha rays (subsequently...although most of the alpha particles passed directly...photon between charged particles. The range of a force...on the mass of the particle carrying the force...
5.
Radioactivity
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...atom by emission of particles, usually accompanied...stable elements in a particle accelerator . Essentially...types, designated as alpha, beta, and gamma...helium atoms (see alpha particle ). Alpha decay reduces...the emission of alpha particles, radioactive thorium...electrons (see beta particle ; electron ). In beta...
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