Teaching light reflection and refraction to the blind
نویسندگان
چکیده
The late trends in special education policy aim to maintain in the same school system students with and without special needs. In the case of students with visual impairment, one of the main problems they face, particularly in physics, is the lack of instructional materials adapted to the experimental laboratory. In this paper we present strategies, activities and resources for instructional use by the physics teacher in a classroom with students with visual impairment, using tactile sensations produced by laser light to teach optics concepts. For best results, we suggest that teachers use resources from a perspective of building models in order to stimulate interest and active involvement of the student.
منابع مشابه
Wave Reflection and Refraction at the Interface of Triclinic and Liquid Medium
A Mathematical model has been considered to study the reflection and refraction phenomenon of plane wave at the interface of an isotropic liquid medium and a triclinic (anisotropic) half-space. The incident plane qP wave generates three types of reflected waves namely quasi-P (qP), quasi-SV (qSV) and quasi-SH (qSH) waves in the tric...
متن کاملABCD matrix for reflection and refraction of laser beam at tilted concave and convex elliptic paraboloid interfaces and studying laser beam reflection from a tilted concave parabola of revolution
Studying Gaussian beam is a method to investigate laser beam propagation and ABCD matrix is a fast and simple method to simulate Gaussian beam propagation in different mediums. Of the ABCD matrices studied so far, reflection and refraction matrices at various surfaces have attracted a lot of researches. However in previous work the incident beam and the principle axis of surface are in parallel...
متن کاملReflection and refraction of light from metasurfaces with phase discontinuities
A three-dimensional extension of the recently demonstrated generalization of the laws of refraction and reflection was investigated for both flat and curved metasurfaces. We found that out-of-plane refraction occurs for a metasurface that imparts a wavevector out of the plane of incidence onto the incident light beam. Metasurfaces provide arbitrary control over the direction of refraction, and ...
متن کاملChiral molecules split light: Reflection and refraction in a chiral liquid.
A light beam changes direction as it enters a liquid at an angle from another medium, such as air. Should the liquid contain molecules that lack mirror symmetry, then it has been predicted by Fresnel that the light beam will not only change direction, but will actually split into two separate beams with a small difference in the respective angles of refraction. Here we report the observation of...
متن کاملNumerical Investigation of Birefringene Effect on the Light Reflection
In the present paper, the problem of light reflection from a birefringent medium and thin film is considered. First, the analytical equations governing the propagation of a plane and harmonic electromagnetic wave in an infinite, birefringent, linear, non-dispersive, non-absorbing, and non-magnetic medium is derived from Maxwell equations. Then, using phase matching condition and boundary condit...
متن کامل