- Edison screw (Wikipedia)
Edison screw (ES) is a standard lightbulb socket for electric light bulbs. It was developed by Thomas Edison (1847–1931), patented in 1881, and was licensed in 1909 under General Electric’s Mazda trademark. The bulbs have right-hand threaded metal bases (caps) which screw into matching threaded sockets (lamp holders). For bulbs powered by AC current, the thread is generally connected to neutral and the contact on the bottom tip of the base is connected to the “live” phase.
- James Buchanan (Wikipedia)
James Buchanan Jr. (/bjuːˈkænən/ bew-KAN-ən; April 23, 1791 – June 1, 1868) was the 15th president of the United States, serving from 1857 to 1861. Buchanan also served as the secretary of state from 1845 to 1849 and represented Pennsylvania in both houses of the U.S. Congress. He was an advocate for states’ rights, particularly regarding slavery, and minimized the role of the federal government preceding the Civil War.