期刊论文详细信息
Química Nova
Projection spectrograph as a tool for light polarization classrooms demonstrations
Faria, Gregório Couto1  Universidade de São Paulo, São Carlos, Brasil1  Azevedo, Eduardo Ribeiro de1  Castro Filho, Jae Antonio de1  Batalhão, Tiago Barbin1  Sartori, Josimar Luiz1  Nunes, Luiz Antônio de Oliveira1  Santoni, Ercio1 
关键词: projection spectrograph;    optical activity;    birefringence.;   
DOI  :  10.1590/S0100-40422010000500036
学科分类:化学(综合)
来源: Sociedade Brasileira de Quimica
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【 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】

Unknown   

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