ERIC Number: EJ985098
Record Type: Journal
Publication Date: 2012-Mar
Pages: 5
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0031-9120
EISSN: N/A
Demonstrations of Optical Spectra with a Video Camera
Kraftmakher, Yaakov
Physics Education, v47 n2 p184-188 Mar 2012
The use of a video camera may markedly improve demonstrations of optical spectra. First, the output electrical signal from the camera, which provides full information about a picture to be transmitted, can be used for observing the radiant power spectrum on the screen of a common oscilloscope. Second, increasing the magnification by the camera enhances the resolution of the spectra displayed by a colour monitor. In particular, it becomes possible to resolve the sodium doublet at 579 nm ([delta][lambda] = 0.6 nm). (Contains 6 figures.)
Descriptors: Chemistry, Video Technology, Videotape Recorders, Photography, Optics, Science Instruction, Physics, Measurement Equipment, Educational Technology, Light, Spectroscopy, College Science
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A