The double slit experience with light from the point of view of Feynman's sum of multiple paths

Abstract

This paper presents an analysis of the double slit experience with light, by using concepts of the Feynman method of "sum of multiple paths" in quantum mechanics. The advantages of this formulation for the teaching of basic aspects of quantum mechanics in the high-school level are analyzed. Keywords: double slit experience, light, sum of multiple paths, quantum mechanics.Este trabalho apresenta uma análise da experiência de fenda dupla com luz, utilizando conceitos do método de "Soma de vários caminhos" da formulação de Feynman da mecânica quântica. São analisadas as vantagens desta formulação para o ensino no nível médio de aspectos básicos da mecânica quântica. Palavras-chave: experiência da dupla fenda, luz, soma de vários caminhos, mecânica quântica.

Panorama Dos Artigos Sobre Atividades Experimentais Publicados Na Revista Brasileira De Ensino De Física No Período Compreendido Entre 2002 E 2017

“…Uma análise da experiência de fenda dupla com luz foi realizada pelos autores de um trabalho utilizando conceitos do método de "Soma de vários caminhos" da formulação de Feynman da mecânica quântica (Fanari;Arlego;Otero, 2014).…”

Física: contextualizando a educação e a prática pedagógica - Volume 1

“…A verificação das lei de Boyle-Mariotte, Gay-Lussac e a equação dos gases ideais é possível com experimento proposto em (Brunetto;Cristina;Ribeiro, 2005). Uma análise da experiência de fenda dupla com luz foi realizada pelos autores de um trabalho utilizando conceitos do método de "Soma de vários caminhos" da formulação de Feynman da mecânica quântica (Fanari;Arlego;Otero, 2014).…”

Teaching and Learning Optics in High School: From Fermat to Feynman

“…Here, we propose to expose the main ideas of the method, eliminating the mathematical formalism. It is worth mentioning that our group has implemented and analyzed didactic sequences based on Feynman's approach for quantum mechanics oriented to high school, both for the behavior of electrons and light [24][25][26][27][28][29][30]. It is important to recall that these works were not based on the wave-particle duality.…”

“…In previous investigations using this approach, we developed a didactic sequence to teach the quantum behavior of matter, focusing on the electron as a quantum system, the probabilistic function, and the quantum-classical transition. This proposal was successfully implemented in two courses of the last year of high school in Argentina [24][25][26][27][28][29][30] and in four courses of high school in Colombia, with 118 students aged 16 to 17 [13].…”

“…After analyzing the behavior of light in Phase 1, it is necessary to propose a set of principles or laws that describe all the experiments from a unified conceptual framework. In this phase, we present the formulation of the laws of quantum mechanics for light, using Feynman's path integral technique, referred to in the sequence as the "Sum Alternative Paths" (SAP) [28]. We adapted the original technique, which involved advanced mathematical methods, to make it suitable for classroom use, using essential mathematical concepts, such as vectors, angles, and geometric vector addition, that students already possess.…”