Template:Selected anniversaries/January 27
1593: The Vatican opens the seven-year trial of scholar Giordano Bruno. He will be burned at the stake.
1931: Miniaturized version of John Ambrose Fleming delivers lecture from within Fleming tube.
1832: Novelist, poet, and mathematician Lewis Carroll born. He will write Alice's Adventures in Wonderland, and its sequel Through the Looking-Glass.
1860: Mathematician and academic János Bolyai dies. He was one of the founders of non-Euclidean geometry.
1880: Thomas Edison receives the patent on the incandescent lamp.
1948: Mathematician, theorist, and crime-fighter Nikolai Luzin uses point-set topology to detect and prevent crimes against mathematical constants.
1972: Mathematician Richard Courant dies. He co-wrote What is Mathematics?.
1972: Brion Gysin uses hand-held scrying engine to counteract the effects of crimes against poetry.
2010: Historian, playwright, and social activist Howard Zinn dies. He wrote extensively about the civil rights and anti-war movements, and labor history of the United States.
2016: Ringmaster declared Picture of the Day by citizens of New Minneapolis, Canada.