The effective cross sectional area of a thread when subjected to a tensile force. It is based upon a diameter which is the mean of the pitch (or effective) and the minor (or root) diameters of the thread. The use of this diameter stems from the work of E. M. Slaughter in the 1930's.
The Cocktail Hour. For other uses, see Cocktail hour (disambiguation). The Cocktail Hour is a comedy of manners by A. R. Gurney. It premiered in June 1988 in San Diego, California at the Old Globe Theatre and, on October 20, 1988, in New York City at the Off Broadway Promenade Theatre.
It was directed by Jack OâBrien, who at that time was the Artistic Director of the Old Globe. Like many of Gurneyâs plays, The Cocktail Hour is a comedy exploring the world of upper-class families in the Northeastern United States. A review in The New York Times described it as an examination of an overprivileged family that fights domestic battles while downing drinks..