NDLI: Kepler and the Law of Refraction

Content Provider	Scilit
Author	Houstoun, R. A.
Copyright Year	1958
Description	Journal: Physics Bulletin Every student of optics knows that the angles of incidence and refraction of a ray, i and r, are connected by the relation μ =sin i/sin r, where μ is a constant known as the index of refraction. The astonomer Kepler tried to determine this relation on the basis of the data available in his day and found instead the relation i r = ki sec r Whewell in his History of the Inductive Sciences says it is strange that he should have obtained this formula, when the correct law is so simple, and in a review in Nature Prof. H. C. Plummer also wonders how he got it, for it is both awkward for calculation and violates the principle of the reversibility of the ray.
Related Links	http://iopscience.iop.org/article/10.1088/0031-9112/9/1/002/pdf
Ending Page	6
Page Count	4
Starting Page	3
ISSN	00319112
DOI	10.1088/0031-9112/9/1/002
Journal	Physics Bulletin
Issue Number	1
Volume Number	9
Language	English
Publisher	IOP Publishing
Publisher Date	1958-01-01
Access Restriction	Open
Subject Keyword	Journal: Physics Bulletin History and Philosophy of Science
Content Type	Text
Resource Type	Article
Subject	Medicine

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Kepler and the Law of Refraction