The Problem of Focusing and Real Images

Autor/in	Mihas, Pavlos
Titel	The Problem of Focusing and Real Images
Quelle	In: European Journal of Physics, 29 (2008) 3, S.539-553 (15 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0143-0807
DOI	10.1088/0143-0807/29/3/014
Schlagwörter	Optics; Physics; Theories; Scientific Concepts; Scientific Principles; Science Instruction; Science History; Validity; Problem Solving + Suchen Sie Ihr Suchwort? Optik; Physik; Theory; Theorie; Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; History of science; Wissenschaftsgeschichte; Gültigkeit; Problemlösen
Abstract	A historical discussion of the theories which deal with the formation of real images in mirrors and lenses is presented in this paper. Speculations on mirrors appeared as early as Plato. Euclid's, Hero's and Ptolemy's approaches to visual rays are described. The theory on burning mirrors starts with Diocles and later was continued by the Arabs. Al Haytham extensively studied the reflection of light rays on concave mirrors. Huygens tried to find a shorter way to do the calculations. With lenses Kepler gave a new way of finding the position of images by using approximations. Huygens also gave a solution for the shape of a "perfect" lens. Huygens' principle on waves can be combined with Fermat's principle to explain the formation of images. These theories can be used in education to help students better understand the formation of images, the propagation of waves and the properties of lenses. (Contains 20 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10