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

Science on Instagram: "In the video provided, legendary physicist Albert Einstein explains the concept behind his most famous equation, E = mc^2, and its implications for our understanding of the universe. Key Takeaways • Mass-Energy Equivalence: Einstein describes how energy (E) is equal to mass (m) multiplied by the square of the speed of light (c^2). • Energy Transformation: He explains that a very small amount of mass can be converted into a very large amount of energy, and vice versa. • Sci