SCIENCE | HISTORY | KNOWLADGE on Instagram: "☀️ Engineers Develop Smart Technology to Clean Solar Panels Using a Smartphone • Solar panels lose efficiency when covered with dust or dirt. • Cleaning them manually is time-consuming and risky on rooftops. • Engineers designed smart robotic cleaners for panels. • These robots move across panels autonomously. • Sensors detect dust, debris, and uneven surfaces. • Cleaning is gentle — no scratching or damage. • Controlled remotely via a smartphone app.