1. Lentes de gelatina.
- Author
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Helena Gonçalves, Maria, de Araujo, Luis E. E., and Rodrigues, Varlei
- Subjects
- *
REFRACTIVE index , *CRYSTALLINE lens , *EYE , *OPTICS , *DISTANCES , *PHYSICS - Abstract
We describe a low-cost and playful apparatus for geometrical optics experiments that uses everyday materials. The experimental setup is simple and easy to manipulate, and it entails making spherical lenses with Jell-O. Using paper templates, created in the desired shape, we cut the Jell-O in the format of a spherical lens. Using these materials, we measured the refraction index of the lenses using Snell's Law and measured the focal distance of a convergent Jell-O lens. Using a Jell-O lens, we simulated how the crystalline lens in the human eye works. By stretching and compressing the Jell-O lens, it is possible to observe a change in the focal position, illustrating the mechanism of accommodation that occurs in the human eye. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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