ERIC Number: EJ1260895
Record Type: Journal
Publication Date: 2020-Sep
Pages: 13
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0031-9120
EISSN: N/A
Simple Equipment for Teaching Internal Photoelectric Effect
Schirripa Spagnolo, Giuseppe; Postiglione, Adriana; De Angelis, Ilaria
Physics Education, v55 n5 Article 055011 Sep 2020
In this paper, an educational tool is proposed to show the internal photoelectric effect in a simple and clear way for Undergraduate Physics courses or High Schools. Experimental evidence of the photoelectric effect is particularly important in the didactic experience. This effect is fundamental to introduce students to the world of quantum mechanics, and to the concept of quantized energy. However, it often requires uneconomical and not easy to use equipment. For this reason, here we describe the realization of a simple and low-cost system based on the LED to LED structure; LEDs can in fact act as light sources, but also as photodetectors, being sensitive to wavelengths equal to or shorter than the predominant wavelength they emit. Through the lightning of LEDs of different colors, we thus show that the verification of the photoelectric effect becomes easy.
Descriptors: Science Instruction, Physics, Teaching Methods, Undergraduate Students, High School Students, Quantum Mechanics, Energy, Lighting, Laboratory Equipment
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education; High Schools; Secondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A