James Watt, Scottish chemist and engineer (died 1819)

James Watt was a Scottish inventor, engineer and chemist who improved on Thomas Newcomen's 1712 Newcomen steam engine with his Watt steam engine in 1776, which was fundamental to the changes brought by the Industrial Revolution in both his native Great Britain and the rest of the world.

January 19 is the 19th day of the year in the Gregorian calendar; 346 days remain until the end of the year.