James Watt

James Watt was born in 1736 in Scotland. As a young boy, he was often sick and was mostly educated at home by his mother. He showed a great natural ability for making mathematical instruments and repairing machines. In his late teens, he traveled to London to formally study instrument making. Afterward, he returned to Scotland and set up a small workshop at the University of Glasgow, where he began fixing various scientific tools for the professors.

In 1764, Watt was asked to repair a model of the Newcomen steam engine. He realized that the engine wasted a massive amount of steam and energy because its cylinder had to be repeatedly heated and cooled. To solve this, he invented the "separate condenser" in 1765, allowing the main cylinder to remain hot while the steam was cooled in a different chamber. This brilliant improvement made the steam engine much more powerful, efficient, and cheaper to run.

Watt's improved steam engine was a turning point in history. It provided a reliable source of power for factories, mills, and mines, which no longer had to be located next to rivers. This breakthrough fueled the Industrial Revolution, transforming society from farming-based to industry-based. Watt also invented the concept of "horsepower" to compare the output of steam engines to the power of draft horses. Today, the unit of electrical power, the "watt," is named in his honor to celebrate his immense contributions to science and engineering.