Ha

Ha may refer to:

Science and measurement

Medicine

Linguistics

Mathematics

Media

Home and Away

Home and Away is an Australian television soap opera. It was created by Alan Bateman and commenced broadcast on the Seven Network on 17 January 1988. Bateman came up with the concept of the show during a trip to Kangaroo Point, New South Wales, where he noticed locals were complaining about the construction of a foster home and against the idea of foster children from the city living in the area. The soap opera was initially going to be called Refuge, but the name was changed to the "friendlier" title of Home and Away once production began. The show premiered with a ninety-minute pilot episode. Since then, each subsequent episode has aired for a duration of twenty-two minutes and Home and Away has become the second-longest drama series in Australian television. In Australia, it is currently broadcast from Mondays to Thursdays at 7:00 pm (on Thursdays, two episodes are played in a one-hour block).

152 H 88

152 H 88 is the name of a series of modernized 152 mm towed heavy howitzers with 32 caliber barrels. The guns of the series share the same barrel as well as other similar qualities, but differ slightly in appearance, since they consist of three different, older (modernized) versions. The modernization was carried out by Vammas Oy from 1988 to mid-1990s. The modernization project consisted of numerous modifications to the guns, some of which had already undergone earlier smaller modifications. The most important change was the replacement of the original barrels by a Finnish-made 152 mm barrel. Also the gun carriages were subjected to various modifications. After the modernization, increased towing speeds were made possible. The breech mechanism is manually operated in all the guns. All the 152 H 88 series artillery pieces are being withdrawn from service and scrapped (as of 2007).

Versions

There are three different main versions of the gun:

The two Soviet models were either taken as war booty during the Continuation War or bought from the Germans. The German 15 cm sFH 18 guns were bought during the Interim Peace and saw service during the Continuation War.

Whip (tree)

A whip is a slender, unbranched shoot or plant. This term is used in forestry to refer to unbranched young tree seedlings of approximately 0.5-1.0 m (1 ft 7 in-3 ft 3 in) in height and 2–3 years old that have been grown for planting out.

Swingout

The swingout is the defining dance move of Lindy Hop.

Background

The swingout evolved from the breakaway, which in turn evolved from the Texas Tommy. The first documented mention of the swingout pattern that resembles breakaway was in 1911, to describe a "Texas Tommy Swing" show done at the Fairmont Hotel in San Francisco. Its variants are used in Jive, East Coast Swing, West Coast Swing and Modern Jive.

References

See also

Whipcracking

Whipcracking is the act of producing a cracking sound through the use of a whip. Used during livestock driving and horse riding, it has also become an art. A rhythmic whipcracking belongs to the traditional culture among various Germanic peoples of Bavaria (Goaßlschnalzen), various Alpine areas (Aperschnalzen), Austria, and Hungary (Ostorozás). Today it is a performing art, a part of rodeo show in United States, a competitive sport in Australia and increasingly popular in the United Kingdom, where it crosses boundaries of sport, hobby and performance.

Physics

The crack a whip makes is produced when a section of the whip moves faster than the speed of sound creating a small sonic boom. The creation of the sonic boom was confirmed in 1958 by analyzing the high-speed shadow photography taken in 1927.

Recently, an additional, purely geometrical factor was recognized: the tip of the whip moves twice as fast at the loop of the whip, just like the top of a car's wheel moves twice as fast as the car itself.