O USO DE UM SENSOR DE LUZ LINEAR COMO RECURSO DIDÁTICO PARA DEMONSTRAR PRINCÍPIOS DE DIFRAÇÃO E ESPECTROSCOPIA

Química Nova

Fernando Arruda Mendes De Oliveira¹  Eduardo Ribeiro De Azevedo¹  Luiz Antonio De Oliveira Nunes¹ 

关键词: diffraction;    spectroscopy;    linear light sensor;   

DOI  :  10.5935/0100-4042.20150022

来源: SciELO

【 摘 要 】

This article presents a discussion on light diffraction by slits and grids as well as the development of an experimental apparatus which provides quantitative observation of the phenomenon. We conducted a brief historical survey on the evolution of the wave theory of light and the role of diffraction in the context of optical spectroscopy. We also reviewed the use of Huygens’ principle to calculate the intensity pattern obtained when light is diffracted by slits and compared the predictions with experimental results obtained using the apparatus developed. Finally, the use of the apparatus in an optical spectroscopy experiment was demonstrated.

【 授权许可】

CC BY-NC   
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