ERIC Number: EJ1037716
Record Type: Journal
Publication Date: 2014-Sep
Abstractor: As Provided
Reference Count: 4
Blackbody Radiation from an Incandescent Lamp
Ribeiro, C. I.
Physics Teacher, v52 n6 p371 Sep 2014
In this article we propose an activity aimed at introductory students to help them understand the Stefan-Boltzmann and Wien's displacement laws. It only requires simple materials that are available at any school: an incandescent lamp, a variable dc energy supply, and a computer to run an interactive simulation of the blackbody spectrum. Essentially, the activity consists of calculating the filament's temperature for different values of electric power and comparing the color and brightness of the lamp's light, as seen by the eye, with the correspondent (simulated) black-body spectrum. Although the comparison is only qualitative, we find that the activity provides a tangible introduction to blackbody radiation.
Descriptors: Science Instruction, Physics, Scientific Principles, Lighting, Energy, Computer Simulation, Educational Technology, Light, Optics, Color, Comparative Analysis, Radiation, Concept Formation
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail: firstname.lastname@example.org; Web site: http://scitation.aip.org/tpt
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Authoring Institution: N/A