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ERIC Number: EJ1173318
Record Type: Journal
Publication Date: 2018-Apr
Pages: 6
Abstractor: ERIC
ISSN: ISSN-0031-921X
And so Ad Infinitum: The Search for Quark and Lepton Substructure
Lincoln, Don
Physics Teacher, v56 n4 p204-209 Apr 2018
The saga of the search for the ultimate constituents of matter has long been one of finding a seemingly fundamental structure that, in turn, was found to be made of even smaller building blocks. Matter is made of molecules. Molecules are in turn made of atoms, which are themselves made of electrons and atomic nuclei. The nucleus consists of protons and neutrons, and these nucleons are composed of quarks. The author discusses this search and concludes with a reflection that the mystery of quark and lepton generations and the question of substructure is a real one and one without any known answer. Unlike the Higgs mechanism or supersymmetry, this conundrum does not have an established and popular prospective solution.
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A