They called him crazy, until the world ran on his ideas. Nikola Tesla #NikolaTesla #nikolateslaedit #historytok #historyedit #sciencetok

TechNova on Instagram: "A self taught inventor has built a fully functional robotic heart using nothing but machine parts, showing how far raw engineering skill can go when creativity meets precision. He used motors, valves, gears and recycled auto components to mimic the rhythm and circulation of a real human heart, creating a system that pumps fluid with lifelike timing and control. The entire device runs on mechanical forces without silicone or biological material, turning a workshop project

History Facts & Stories on Instagram: "In 1939, inventor William E. Urschel created the world’s first 3 D printed building behind a small warehouse in Valparaiso, Indiana. The experimental structure was produced using a custom built mechanical system that continuously extruded layers of concrete to form walls directly on site, reducing the need for traditional formwork and manual labor. The following year he would file a series of patents for a Wall Building Machine, describing a method for auto