Teaching the Operating Principles of a Diffraction Grating Using a 3D-Printable Demonstration Kit
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[1] University of Toronto
University of Toronto
Canadá
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- Localización: Journal of chemical education, ISSN 0021-9584, Vol. 94, Nº 5, 2017, págs. 615-620
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
The principles which a diffraction grating provides for the dispersion of optical radiation, as employed in most monochromators, are often not easily embraced by analytical chemistry students. To this end, a 3D-printable demonstration kit has been created with the aim to more clearly demonstrate the concepts of diffraction and interference based wavelength selection. The kit consists of 3D-printable sinusoidal waves of various wavelengths and a platform on which angles at which constructive interference occurs may be recorded. The conceptual demonstration of diffraction grating operation is complemented by a real experiment done on the same platform, using a section of a DVD as a dispersive element and laser pointer light sources. Given the widespread availability of 3D-printers and use of low cost components, this demonstration is not limited to instructors, but can also be printed and used by the students themselves.
