| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 7.43 MB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
Este estudo contribui para desenvolver nos alunos o gosto pela aprendizagem da Física e, consequentemente, para melhorar o ensino desta disciplina e a qualidade dos seus resultados. Pretende-se que os alunos não só adquiram novos conhecimentos mas que fortaleçam os conhecimentos posteriormente adquiridos ao longo dos anos, na área da Física, desenvolvendo um conjunto de competências e capacidade, tanto gerais como específicas da disciplina.
O trabalho apresenta um desenvolvimento mais profundo do tema: Sol e aquecimento, mais especificamente sobre a radiação de corpos negros: Lei de Stefan-Boltzmann e Lei do Deslocamento de Wien.
O comportamento da radiação térmica emitida pelos corpos das mais diversas naturezas é distinto pois uma parte da radiação é refletida enquanto outra parte é absorvida pelo corpo. Estes fenómenos dependem principalmente das características específicas do corpo em estudo.
Alguns cientistas postularam que um corpo responde de forma peculiar à radiação que incide sobre a sua superfície, nascendo a ideia de “corpos negros”. A natureza de corpos negros perfeitos não foi ainda comprovada, uma vez que todo o corpo só age como corpo negro numa determinada gama de radiação, isto é, o corpo tem as suas singularidades.
Este estudo apresenta uma definição de “corpo negro”, um estudo aprofundado sobre a radiação nesses corpos, tal como a teoria na qual estes corpos se baseiam, Lei de Stefan-Boltzmann e Lei de Wien. Por sua vez, este trabalho centra-se num estudo teórico e experimental da aplicabilidade da Lei de Stefan-Boltzmann e respetiva Lei do Deslocamento de Wien.
This study contributes to develop in students pleasure for learning physics and thus to improve the teaching of this discipline and the quality of their results. It is intended that students not only acquire new skills but to strengthen further the knowledge acquired over the years, in the area of physics, developing a set of skills and capacity, both general and specific discipline. This work presents a deep development about the theme: the sun and heat, more specifically on the blackbody radiation, the Stefan-Boltzmann Law and Wien Law. The behavior of the thermal radiation emitted by the bodies is in many different ways because one part of the radiation is reflected while another part is absorbed by the body. This phenomenon depends mainly on the specific characteristics of the body under study. Some scientists have said the body responds from peculiar way to radiation that focuses on its surface, been born the idea of “black bodies". The nature of perfect blackbody not yet been proven, once the body only acts as a blackbody for a specific radiation range, in other words, the body has its singularities. This study presents a definition of "blackbody", a detailed study about radiation in these bodies such as the theory on bodies were based, the Stefan-Boltzmann Law and Wien Law. In turn, this work focuses on theoretical and experimental study about the applicability of the Stefan-Boltzmann Law and of the Wien Law.
This study contributes to develop in students pleasure for learning physics and thus to improve the teaching of this discipline and the quality of their results. It is intended that students not only acquire new skills but to strengthen further the knowledge acquired over the years, in the area of physics, developing a set of skills and capacity, both general and specific discipline. This work presents a deep development about the theme: the sun and heat, more specifically on the blackbody radiation, the Stefan-Boltzmann Law and Wien Law. The behavior of the thermal radiation emitted by the bodies is in many different ways because one part of the radiation is reflected while another part is absorbed by the body. This phenomenon depends mainly on the specific characteristics of the body under study. Some scientists have said the body responds from peculiar way to radiation that focuses on its surface, been born the idea of “black bodies". The nature of perfect blackbody not yet been proven, once the body only acts as a blackbody for a specific radiation range, in other words, the body has its singularities. This study presents a definition of "blackbody", a detailed study about radiation in these bodies such as the theory on bodies were based, the Stefan-Boltzmann Law and Wien Law. In turn, this work focuses on theoretical and experimental study about the applicability of the Stefan-Boltzmann Law and of the Wien Law.
Description
Keywords
Lei de Planck Lei de Stefan-Boltzmann