Development of Practical Photoelectric Effect Based on Arduino Uno: Instrument Validation Analysis

Abstract

Modern Physics Practicum is a supporting course for Modern Physics (theory). The limitations of the practicum unit are the focus of the problem in this research. This research was conducted to develop a Photoelectric Effect practicum device based on Arduino Uno. This research is a descriptive study that aims to describe the validity of the Arduino Uno-based photoelectric effect practicum device. The research instrument is a validation sheet for practical equipment. The validation results show that the Arduino Uno-based Photoelectric Effect practicum unit developed is in the valid category and suitable for use. However, there are several revisions which are suggestions and constructive comments from validators. The part that requires revision is the aspect of ease and safety in using the tool (Photoelectric Effects practicum unit) and considering designing the toolbox (acrylic) in a dark color. Recommendations for further research could examine the sensitivity of the Arduino Uno-based Photoelectric Effect practical unit at blue wavelengths, to obtain Planck constant measurement results that are more accurate or close to the theoretical value