ERIC Number: ED269234
Record Type: RIE
Publication Date: 1986
Reference Count: 0
Astronomy Demonstrations and Models.
Eckroth, Charles A.
Demonstrations in astronomy classes seem to be more necessary than in physics classes for three reasons. First, many of the events are very large scale and impossibly remote from human senses. Secondly, while physics courses use discussions of one- and two-dimensional motion, three-dimensional motion is the normal situation in astronomy; thus, there is greater complexity. Thirdly, students attracted to popular astronomy courses seem less equipped to follow mathematical concepts. For these and other reasons, good astronomy demonstrations must be developed. Four such demonstrations are described: (1) lunar diurnal tides; (2) elliptical orbits of binary stars (in which a set of two or more charts is used to explain details of the motion of binary stars, especially the relationship between theoretical motion and actual appearance from the viewer's vantage point on earth); (3) eclipse motion; and (4) absorption spectra, noting that absorption cells containing solutions of rare earth compounds are better for use with large classes than sodium flames. (JN)
Publication Type: Reports - Descriptive; Speeches/Meeting Papers
Education Level: N/A
Audience: Teachers; Practitioners
Authoring Institution: N/A
Note: Paper presented at the Annual Meeting of the American Association of Physics Teachers (Atlanta, GA, January 28, l986).