Química Nova | |
Utilização de um espectrógrafo de projeção como uma ferramenta para demonstrações sobre polarização da luz | |
Eduardo Ribeiro De Azevedo1  Gregório Couto Faria1  Tiago Barbin Batalhão1  Jae Antonio De Castro Filho1  Ercio Santoni1  Josimar Luiz Sartori1  Luiz Antônio De Oliveira Nunes1  | |
[1] ,Universidade de São Paulo Instituto de Física de São Carlos São Carlos SP ,Brasil | |
关键词: projection spectrograph; optical activity; birefringence; | |
DOI : 10.1590/S0100-40422010000500036 | |
来源: SciELO | |
【 摘 要 】
This article describes the use of a projection spectrograph based on an overhead projector for use in classroom demonstrations on light polarization and optical activity. A simple adaptation on a previously developed apparatus allows illustrating several aspects of optical activity, such as circular and linear birefringence, including their wavelength dependence. Specifically, we use the projection spectrograph to demonstrate the optical activity of an aqueous solution of sugar (circular birefringence), of a quartz plate and of an overhead projector transparence film (linear birefringence). A historical survey about the optical activity discovery and the main principles involved is also presented.
【 授权许可】
CC BY-NC
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
【 预 览 】
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RO202005130063261ZK.pdf | 1876KB | download |