1901 to 1903. Frederick Slate gave his engineering students the task of building a scale that could weigh the earth. The scale was called the “Barodik". To Goldberg, this exemplified a comical combination of seriousness and ridiculousness that would come to serve as an inspiration in his work. From 1938 to 1941, Goldberg drew two weekly strips for the Register and Tribune Syndicate: Brad and Dad (1939–1941) and Side Show (1938–1941), a continuation of the invention drawings. Starting in 1938, Goldberg worked as the editorial cartoonist for the New York Sun. He won the 1948 Pulitzer Prize for Editorial Cartooning for a cartoon entitled "Peace Today". He moved to the New York Journal-American in 1949 and worked there until his retirement in 1963. In the 1960s, Goldberg began a sculpture career, primarily creating busts. Cultural legacy The popularity of Goldberg's cartoons was such that the term "Goldbergian" was in use in print by 1915, and "Rube Goldberg" by 1928. "Rube Goldberg" appeared in the Random House Dictionary of the English Language in 1966 meaning "having a fantastically complicated improvised appearance", or "deviously complex and impractical." The 1915 usage of "Goldbergian" was in reference to Goldberg's early comic strip Foolish Questions, which he drew from 1909 to 1934, while later use of the terms "Goldbergian", "Rube Goldberg" and "Rube Goldberg machine" refer to the crazy inventions for which he is now best known from his strip The Inventions of Professor Lucifer Gorgonzola Butts, drawn from 1914 to 1964. The corresponding term in the UK was, and still is, "Heath Robinson", after the English illustrator with an equal devotion to odd machinery, also portraying sequential or chain reaction elements. The Danish equivalent was the painter, author and cartoonist Robert Storm Petersen, better known under his pen name Storm P. To this day, an overly complicated and/or useless object is known as a Storm P.-machine in Denmark. Goldberg's work was commemorated posthumously in 1995 with the inclusion of Rube Goldberg's Inventions, depicting his 1931 "Self-Operating Napkin" in the Comic Strip Classics series of U.S. postage stamps. The Rube Goldberg Machine Contest originated in 1949 as a competition at Purdue University between two fraternities. It ran until 1956, and was revived in 1983 as a university-wide competition. In 1989 it became a national competition, with a high school division added in 1996. Devices must complete a simple task in a minimum of twenty steps