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ERIC Number: EJ926920
Record Type: Journal
Publication Date: 2011-Apr
Pages: 2
Abstractor: As Provided
ISSN: ISSN-0031-921X
A Mechanical Analogue of the Refracting Telescope
Vannoni, Maurizio; Molesini, Giuseppe; Sordini, Andrea; Straulino, Samuele
Physics Teacher, v49 n4 p236-237 Apr 2011
The recent celebration of the discoveries made by Galileo four centuries ago has attracted new attention to the refracting telescope and to its use as an instrument for the observation of the night sky. This has offered the opportunity for addressing in the classroom the basic principles explaining the operation of the telescope. When doing so, a key concept that is faced is magnification. In geometrical optics, the treatment of magnification is generally given in terms of light rays and first order (Gaussian or paraxial) ray tracing. Computer programs are available with which the light path through the lenses and the whole telescope can be simulated.
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: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A