How to build a low cost spectrometer with Tracker for teaching light spectra

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Rodrigues, M (Author) Other; marques, mb (Author) FCUP; Carvalho, PS (Author) FCUP

Journal

Title: Physics Education

Vol. 51

Final page: 014002

ISSN: 0031-9120

Publisher: Institute of Physics Publishing

Indexing

Scopus - 21 Citations

Scientific classification

CORDIS: Physical sciences > Physics > Classical mechanics

FOS: Social sciences > Educational sciences

Other information

Authenticus ID: P-00K-3SZ

DOI: 10.1088/0031-9120/51/1/014002

Abstract (EN): Optics is probably one on the most exciting topics in physics. However, it also contains some of the less understood phenomena by students - the light spectra obtained from the diffraction of light. The experimental study of light spectra for studying radiating bodies, usually requests sophisticated and expensive equipment that is not normaly affordable for schools, and only a few teachers know how to measure the wavelength of light in a spectrum. In this work we present a simple and inexpensive setup, with enough accuracy for measuring light spectra to be used both in physics and chemistry classes. We show how freeware software Tracker, commonly used for teaching mechanics, can serve to measure wavelengths with about 2 nm of resolution. Several approaches to the calibration of different setups are also provided, depending on the degree of accuracy demanded. © 2016 IOP Publishing Ltd.

Language: English

Type (Professor's evaluation): Scientific