I typed this into Gemini, "who invented the transistor?" and it correctly cites "John Bardeen, Walter Brattain, and William Shockley at Bell Telephone Laboratories in December 1947".
> One of the first electric gates was invented by a Canadian Fred W. Watson in 1881. It was designed to be used for railway systems ... “A catch connected with an electro-magnet keeps a gate closed,” reported The National Tribune on October 9, 1884. [3]
