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.
Garland won a special award at that yearâs Oscar ceremony, for Best Juvenile Performer. Filmed at MGM Studios in Culver City, California, The Wizard of Oz was a modest box-office success when it was first released, but its popularity continued to grow after it was televised for the first time in 1956.