MSN Home
Hotmail
My MSN
Sign in
encarta
more
Hotmail
Messenger
My MSN
MSN Directory
Auctions
Careers & Jobs
Cars
Dating & Personals
Entertainment
Environment
Games
Horoscopes
Life & Style
Maps & Directions
Mobile
Money
Movies
MSN in Concert
Music
National Lottery
News
Property
Shopping
Sport
Tech & Gadgets
Travel
TV
Video
Weather
encarta
®
Home
Encyclopedia
Dictionaries
World Atlas
Study Centre
Quizzes
More
Additional Reference Materials
Thesaurus
Bilingual Dictionaries
Web Centre
Facts & Figures
Other Resources
Primary Resources
Times
Archive
Literature Guides
Foreign Language Help
Project Starters
Tea Break
Columns
Top 10 Lists
This Day in History
Multimedia
Support
Encarta Products
Encarta Answers
Encarta Worldwide
Help
Related Items
from
Encarta
Elementary Particles
Alpha Particle
Anderson, Carl David
Antimatter
Atom
Baryon
Binding Energy
Charm (physics)
Chemistry
Chemistry, Physical
Conservation Laws
Einstein, Albert
Elements, Chemical
Exclusion Principle
Fermion
Field (physics)
Gell-Mann, Murray
Glashow, Sheldon Lee
Gluon
Grand Unification Theories
Hadron
Heisenberg, Werner
Hideki Yukawa
Higgs Particle
Lepton
Magnetic Monopole
Mass Defect
Neutron
Nuclear Physics
Nucleus (atomic structure)
Particle Accelerators
Particle Detectors
Pauli, Wolfgang
Periodic Law
Physics
Planck, Max Karl Ernst Ludwig
Positron
Proton
Quantum Chromodynamics
Quantum Electrodynamics
Quantum Theory
Quark
Radiation
Radioactivity
Relativity
Rubbia, Carlo
Salam, Abdus
Spin
Uncertainty Principle
Unified Field Theory
Weinberg, Steven
Yang, Chen Ning
Alpha Particle
Alpha Particle
, positively charged nuclear particle, symbol
a
, consisting of two protons bound to two neutrons. Alpha particles are emitted...
View article
MSN Privacy
Terms of Use
Advertise
Worldwide
Help
© 2008 Microsoft