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.
For other uses, see The Wizard of Oz (disambiguation). The Wizard of Oz is a 1939 American musical comedy-drama fantasy film produced by Metro-Goldwyn-Mayer, and the best-known and most commercially successful adaptation based on the 1900 novel The Wonderful Wizard of Oz by L. Frank Baum. The film stars Judy Garland as Dorothy Gale.