Utilising Handphones as Light Detectors in Experimenting the Inverse Square Law
by Hariandra Muthu, Lim Yaw Loong
Published: May 9, 2026 • DOI: 10.47772/IJRISS.2026.100400345
Abstract
This research paper explores the feasibility of employing handphones as light detectors in experiments related to the inverse square law. The inverse square law describes the relationship between the intensity of light and the distance from its source, which has significant implications in various fields including physics, astronomy, and photography. Leveraging the built-in capabilities of handphones, such as the camera sensor and computational power, offers a cost-effective and accessible approach to conduct experiments on light intensity measurements. This paper discusses the theoretical background of the inverse square law, outlines the experimental setup utilizing handphones as light detectors, presents experimental results, and discusses the implications and limitations of this approach.