A mixed cell reference is a combination of relative and absolute cell references. In spreadsheets, cell references are used in a variety of commands, charts, functions and formulas. Continue Reading.
Adolph Levis, Entrepreneur And Philanthropist, Dies at 89. Adolph Levis, the inventor of the Slim Jim dried meat snack, died on Tuesday in the Hospice by the Sea in Boca Raton, Fla. He was 89. Born in Philadelphia, Mr. Levis, who was known as Al, dropped out of school at 16 and began selling spices, pickles and condiments during the Depression.
Friday, October 17, 2014. Osbourn Dorsey Invented the Doorknob and Doorstopper. Ever since the first door was created, it is likely that human beings have understood how to use an object or device to keep it open. Heavy stones or bricks or metal cans or chunks of wood all work to prevent a door from closing. Mr. O. Dorsey was a 19th century African-American inventor.