Investigation of black body radiation with the aid of a self-made pyroelectric infrared detector

Abstract

The thermal radiation of a black body is investigated using a pyroelectric infrared radiation detector. This paper presents the construction and operation principles of a simple set-up used for investigation of black body radiation in a student laboratory, and the laws of black body radiation are briefly described. Using the measuring system presented in this paper, it is possible to show the relationship between energy emitted by a black body model and its temperature, as well as verifying the Stefan-Boltzmann law. Knowledge of black body radiation laws and the operation principles of pyroelectric detectors for infrared radiation is essential to understand many processes in nature, the operation principles of different devices including certain systems used in renewable energy sources, alarm systems and methods of measurement used in science and technology.

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