PHY2061 R. D. Field Department of Physics quark_1.doc University of Florida The SimpleStructure of our Universe Elementary Particle: Indivisible piece of matter without internal structure and without detectable size or shape . . • Four Forces: • Gravity (Solar Systems, Galaxies, Curved Space-Time , Black Holes) • Electromagnetism (Atoms & Molecules, Chemical Reactions) • Weak (Neutron Decay, Beta Radioactivity) • Strong (Atomic Nuclei, Fission & Fusion) • Two Classes of Elementary Particles: • Leptons:Do notinteract with the strong force(but may interact with weak, EM and gravity).• Quarks:Dointeract with the strong force(may also
This is the end of the preview. Sign up
access the rest of the document.
This note was uploaded on 05/31/2011 for the course PHY 2061 taught by Professor Fry during the Spring '08 term at University of Florida.