Semarang, April 22, 2026 – Sunscreen is a staple in daily skincare routines; however, the fundamental physical principles that govern its efficacy remain largely unexamined by the general public. To bridge this knowledge gap, a community service delegation from the Department of Physics at Universitas Diponegoro (UNDIP) conducted an educational outreach program at SMA Negeri 12 Semarang to explain the science behind these ubiquitous skincare products. The initiative was spearheaded by Dr. Iis Nurhasanah, Prof. Dr. Agus Subagio, and V. Gunawan, Ph.D., in collaboration with graduate and undergraduate representatives specializing in Materials Physics.
Bridging Theory and Application
During the interactive session, the team introduced students to zinc oxide (ZnO) nanomaterial. By applying the principles of electromagnetic wave theory, students examined how these nano-sized particles function as microscopic “shields,” effectively reflecting and absorbing harmful ultraviolet (UV) radiation. Student engagement was high as the team demonstrated the direct correlation between particle size and sun protection efficacy. Through the use of accessible, hands-on instructional tools, abstract physics concepts—such as frequency and wavelength—were rendered both tangible and intuitive. This dynamic discussion emphasized the fact that complex topics like nanotechnology can be effectively communicated in an engaging, real-world context.
Advancing Scientific Literacy
Through this initiative, the UNDIP Physics Community Service Team aims to cultivate student interest in physics, fostering the critical understanding that the discipline is not merely a collection of abstract formulas, but a fundamental driver of technological innovation in everyday life. By exploring the physical principles underpinning sunscreen, students have transitioned from theoretical electromagnetic wave studies to practical, science-based health literacy—an essential skill for UV protection within Indonesia’s tropical climate.
This synergy between academia and secondary education is intended to inspire a passion for research among students while reinforcing scientific literacy within the broader community. For the students of SMAN 12 Semarang, sunscreen is no longer viewed simply as a skincare product; it now serves as a testament to the pivotal role physics plays in nanotechnological advancements designed to enhance human quality of life.
