A mirror can direct a reflected beam onto one spot, even as it rotates. Engineers borrowed this trick for radio waves, building a smart mirror on a drone. It cancels out shakes and vibrations on the fly: it anticipates the drone's movements and instantly re-aims to keep the signal crisp.
The secret is in the mirror's guts: instead of a shiny surface, it's an array of tiny antennas. Each tweaks how radio waves behave, letting the whole array curve the beam, just like a lens focuses light. Algorithms rooted in basic physics predict the drone's dance, and the speed of light, first nailed by Maxwell, makes sure the message arrives in a flash.
These field tests bridge lab concepts and real-world, glitch-free connectivity, where a signal blasts through walls and weather.
Heinrich Hertz first reflected radio waves in 1888—today his idea takes flight on a drone to give the world interference-free communication.