𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 | 𝗜𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝗼𝗻| 𝗚𝗮𝗱𝗴𝗲𝘁𝘀 on Instagram: "This Stirling Helicopter Engine Model is a fascinating educational and mechanical display that demonstrates the working principles of a Stirling engine a type of external combustion engine adapted into a miniature helicopter form. This model is a perfect blend of engineering design, thermodynamics, and creativity, making it popular among students, hobbyists, and collectors."

Technology Explained ⚙️ on Instagram: "Follow @explaining.tech to learn everything about technology one post at a time 🧠⚙️ The way a lens manipulates light is a core concept in optics, demonstrating how we focus, magnify, and correct vision. At its heart, a lens works by refraction, which is the bending of light as it passes from one medium (air) to another (glass or plastic). The key to the lens’s power lies in its curvature. There are two main types of lenses that exhibit dramatically differe