explaining on Instagram: "Follow @explain.era to learn everything about technology one post at a time 🧠⚙️ . . A bullet slicing cleanly between the spinning blades of a propeller. It looks like pure science fiction, but it was a WWI innovation that changed air combat forever.The secret? The Interrupter Gear.Engineers didn’t speed up the bullet; they timed the gun. The propeller itself was linked to the firing pin, literally blocking the gun from firing just as a blade was in the way. The machine