An Estimation of the Number and Size of Atoms in a Printed Period

Autor/inn/en	Schaefer, Beth; Collett, Edward; Tabor-Morris, Anne; Croman, Joseph
Titel	An Estimation of the Number and Size of Atoms in a Printed Period
Quelle	In: Physics Teacher, 49 (2011) 7, S.438-439 (2 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0031-921X
DOI	10.1119/1.3639155
Schlagwörter	Elementary School Students; Physics; Nuclear Physics; Molecular Structure; Computation; Science Education; Equations (Mathematics); Elementary School Science + Suchen Sie Ihr Suchwort? Physik; Atomphysik; Kernphysik; Naturwissenschaftliche Bildung; Equations; Mathematics; Gleichungslehre
Abstract	Elementary school students learn that atoms are very, very small. Students are also taught that atoms (and molecules) are the fundamental constituents of the material world. Numerical values of their size are often given, but, nevertheless, it is difficult to imagine their size relative to one's everyday surroundings. In order for students to obtain a quantitative understanding of the size of atoms, we have considered this problem by asking the following question: namely, how many atoms are in a printed period (.)? In this paper the number of atoms in a period is determined, along with a discussion and an equation to determine the radius of an atom. A related discussion regarding the size of atoms can be found in Ref. 1. (As Provided).
Anmerkungen	American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail: pubs@aapt.org; Web site: http://scitation.aip.org/tpt
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10