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‘‘F=ma’’ optics

 

作者: James Evans,   Mark Rosenquist,  

 

期刊: American Journal of Physics  （AIP Available online 1986）
卷期: Volume 54, issue 10  

页码: 876-883

 

ISSN:0002-9505

 

年代: 1986

 

DOI:10.1119/1.14861

 

出版商: American Association of Physics Teachers

 

关键词: FERMAT PRINCIPLE;GEOMETRICAL OPTICS;GRIN DEVICES;REFRACTIVITY;VARIATIONAL METHODS

 

数据来源: AIP

 

摘要:

Fermat’s principle may be used to derive an equation, of the formF=ma, governing the shape of a light ray in a medium of varying refractive index. Many interesting problems in gradient‐index optics that ordinarily require considerable computation may therefore be solved very simply by analogy to familiar mechanical problems. This approach also provides the means of thoroughly exploring the optical‐mechanical analogy at a much more elementary level than is usual.

 

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