Kavkaz95🐺 on Instagram: "A steam engine is a mechanical device that converts heat energy of steam into mechanical energy. It was one of the most important inventions in human history and became the foundation of the Industrial Revolution, powering factories, locomotives, ships, and mines before modern engines were developed. Historical Background The idea of steam power began in 1st century AD with Hero of Alexandria. The first practical steam device was made by Thomas Savery (1698) for pumping