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American Journal of Physics
written by Fred Goldberg and Lillian C. McDermott
Student understanding of the real images produced by converging lenses and concave mirrors was investigated both before and after instruction in geometrical optics. The primary data were gathered through interviews in which undergraduates taking introductory physics were asked to perform a set of prescribed tasks based on a simple demonstration. The criterion used to assess understanding was the ability to apply appropriate concepts and principles, including ray diagrams, to predict and explain image formation by an actual lens or mirror. Performance on the tasks, especially by students who had not had college instruction in geometrical optics, suggested the presence of certain naive conceptions. Students who had just completed the study of geometrical optics in their physics courses were frequently unable to relate the concepts, principles, and ray-tracing techniques that had been taught in class to an actual physical system consisting of an object, a lens or a mirror, and a screen. Many students did not seem to understand the function of the lens, mirror, or screen, nor the uniqueness of the relationship among the components of the optical system. Difficulties in drawing and interpreting ray diagrams indicated inadequate understanding of the concept of a light ray and its graphical representation.
American Journal of Physics: Volume 55, Issue 2, Pages 108-119
Subjects ADS Supplements Resource Types
Education - Basic Research
- Alternative Conceptions
General Physics
- Physics Education Research
- Reference Material
= Research study
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© 1987 American Journal of Physics
Additional information is available.
DOI:
10.1119/1.15254
Keywords:
GEOMETRICAL OPTICS, IMAGE FORMING, LEARNING, LENSES, MIRRORS
Record Creator:
Metadata instance created June 13, 2005 by Lyle Barbato
Record Updated:
July 8, 2010 by Lyle Barbato
Last Update
when Cataloged:
February 1, 1987
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Record Link
AIP Format
F. Goldberg and L. McDermott, Am. J. Phys. 55 (2), 108 (1987), WWW Document, (http://dx.doi.org/10.1119/1.15254).
AJP/PRST-PER
F. Goldberg and L. McDermott, Investigation of student understanding of the real image formed by a converging lens or concave mirror Am. J. Phys. 55 (2), 108 (1987), <http://dx.doi.org/10.1119/1.15254>.
APA Format
Goldberg, F., & McDermott, L. (1987, February 1). Investigation of student understanding of the real image formed by a converging lens or concave mirror. Am. J. Phys., 55(2), 108-119. Retrieved July 23, 2014, from http://dx.doi.org/10.1119/1.15254
Chicago Format
Goldberg, Fred, and Lillian C. McDermott. "Investigation of student understanding of the real image formed by a converging lens or concave mirror." Am. J. Phys. 55, no. 2, (February 1, 1987): 108-119, http://dx.doi.org/10.1119/1.15254 (accessed 23 July 2014).
MLA Format
Goldberg, Fred, and Lillian C. McDermott. "Investigation of student understanding of the real image formed by a converging lens or concave mirror." Am. J. Phys. 55.2 (1987): 108-119. 23 July 2014 <http://dx.doi.org/10.1119/1.15254>.
BibTeX Export Format
@article{ Author = "Fred Goldberg and Lillian C. McDermott", Title = {Investigation of student understanding of the real image formed by a converging lens or concave mirror}, Journal = {Am. J. Phys.}, Volume = {55}, Number = {2}, Pages = {108-119}, Month = {February}, Year = {1987} }
Refer Export Format

%A Fred Goldberg
%A Lillian C. McDermott
%T Investigation of student understanding of the real image formed by a converging lens or concave mirror
%J Am. J. Phys.
%V 55
%N 2
%D February 1, 1987
%P 108-119
%U http://dx.doi.org/10.1119/1.15254
%O text/html

EndNote Export Format

%0 Journal Article
%A Goldberg, Fred
%A McDermott, Lillian C.
%D February 1, 1987
%T Investigation of student understanding of the real image formed by a converging lens or concave mirror
%J Am. J. Phys.
%V 55
%N 2
%P 108-119
%8 February 1, 1987
%U http://dx.doi.org/10.1119/1.15254


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