A problemática em abordar a radiação do corpo negro no ensino médio

Abstract

In the teaching-learning process, it is verified that only theoretical data presented in the classroom through lectures are not enough to arouse students' interest and attention. This happens mainly when theoretical data are presented, using formulas and calculations. In particular, we consider the study of blackbody radiation, which requires prior knowledge of the fundamental principles of Quantum Mechanics, being seen only at the upper level. In this sense, we try to present experiments that are easy to implement that can help in understanding this complex subject. We present the blackbody radiation through a theoretical class and an experimental practice. At the first moment, a questionnaire was applied in order to evaluate the students' prior knowledge. Then, the theory of the black body was presented succinctly by means of video lesson. We present, in the classroom, the experiment of the cube of Leslie, in such way to allow the effective participation of these students that all could interact. Finally, an evaluative questionnaire about what was presented in the room was released. The results obtained confirm and reinforce the importance of allying the theoretical class with the practical class