|
|
| Home > JCE Print > Journal of Chemical Education > Issues >
2008
>
June
> |
|
In the Laboratory
|
|
Cost-Effective Teacher
|
|
Resolving Spectral Lines with a Periscope-Type DVD Spectroscope
|
|
|
Fumitaka Wakabayashi
Department of Science and Engineering, National Museum of Nature and Science, Tokyo 169-0073, Japan
|
|
June 2008
Vol. 85 No. 6
p. 849
|
|
|
|
|
|
|
| Abstract |
|
A new type of DVD spectroscope, the periscope type, is described and the numerical analysis of the observed emission and absorption spectra is demonstrated. A small and thin mirror is put inside and an eighth part of a DVD is used as a grating. Using this improved DVD spectroscope, one can observe and photograph visible spectra more easily and clearly than with an earlier design. The spectra photographed using a digital camera were digitized using a software that is available from a free public source and were numerically analyzed using a conventional spreadsheet. Spectral charts of the emission spectra of a fluorescent lamp, discharge lamps of hydrogen and helium, sunlight, Na flame test, and the absorption spectrum of KMnO4 aqueous solution are reported. Small features are discernble in the spectra. For the sun spectrum, many Fraunhofer lines were clearly observed and some of the lines are assigned to Na, H, Fe, Mg, and Ca elements. For the Na flame test, the D line was clearly resolved to two distinct peaks at 589.0 and 589.6 nm when a pair of razor blades was used as a slit. Those results show that this periscope-type DVD spectroscope has the potential to be a cost-effective, powerful, and versatile tool for science education.
|
| Supplement |
The full-sized paper pattern and construction method of the periscope-type DVD spectroscope
|
|
| More Information |
|
Citation |
Wakabayashi, Fumitaka. J. Chem. Educ. 2008, 85, 849.
|
|
Keywords |
Atomic Spectroscopy; Demonstrations; Elementary / Middle School Science; First-Year Undergraduate / General; Hands-On Learning / Manipulatives; High School / Introductory Chemistry; Laboratory Instruction; Physical Chemistry; Solutions / Solvents; Spectroscopy; UV-Vis Spectroscopy
|
|
History |
Created:
Last Updated: |
5/5/2008
5/7/2008
|
|
|
|
|
|
|
|
| |
|
| Home > JCE Print > Journal of Chemical Education > Issues >
2008
>
June
> Page
849
|
|
|
| JCE HS CLIC |
|
Our Secondary School editors work hard to distill all the JCE materials to produce a fraction of particular interest to high school teachers. We call it CLIC.
|
| Contributions Welcome |
| JCE welcomes your submission |
| Advertisers |
| In recent years we have worked hard to better match our advertisers with our readers. When shopping for chemistry education materials, visit our advertisers' WWW sites first. |
| Be An Ambassador |
| Take JCE along on your outreach missions. Copies of the Journal, guest access to JCE Online, our publications catalog, and more are available for your participants. |
|
