The well-known figure of a straw in a glass of water, often reported in textbooks to introduce light refraction, is hardly understandable in physical terms and can even be misleading when accompanied with the scheme of a deviated light ray to introduce Snel’s law. This paper means to propose an alternative way of introducing light refraction to pupils, aimed at preventing misconceptions.
Water tank experiment clears up some refraction misconceptions / Corni, Federico. - In: PHYSICS EDUCATION. - ISSN 0031-9120. - STAMPA. - 41:(2006), pp. 103-104. [10.1088/0031-9120/41/2/F02]
Water tank experiment clears up some refraction misconceptions
CORNI, Federico
2006
Abstract
The well-known figure of a straw in a glass of water, often reported in textbooks to introduce light refraction, is hardly understandable in physical terms and can even be misleading when accompanied with the scheme of a deviated light ray to introduce Snel’s law. This paper means to propose an alternative way of introducing light refraction to pupils, aimed at preventing misconceptions.
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