Its pH changes very little when a small or moderate amount of strong acid or base is added to it and thus it is used to prevent changes in the pH of a solution. Buffer solutions are used as a means of keeping pH at a nearly constant value in a wide variety of chemical applications.
The Wizard of Oz movie musical premieres in Oconomowoc, Wisconsin. The Wizard of Oz, starring Judy Garland and featuring words and music by E.Y. âYipâ Harburg and Harold Arlen, receives its world premiere in Oconomowoc, Wisconsin, on this day in 1939.
A Kansas cyclone catapults Dorothy over the rainbow into the colorful Land of Oz. The Kansas Baum describes was based on his experiences living in South Dakota in the 1880s. Many Kansans found this description of Kansas unjust and untrue. The Wizard of Oz became one of the bestselling books of the 20th century.