Ha

Ha may refer to:

Science and measurement

  • Hahnium, an element now called Dubnium
  • Hartree, an atomic unit of energy
  • Hectare (ha), a unit of area
  • Hectoampere, a unit of electric current
  • Hour angle, in astronomy, one of the coordinates of the equatorial coordinate system
  • Hyaluronan (Hyaluronic acid), a carbohydrate structure
  • Hydroxylapatite, a mineral
  • High availability, systems design and implementation with a view to maximising service
  • Medicine

  • Hyperandrogenic anovulation, also called polycystic ovary syndrome
  • Hemagglutinin (influenza) (HA), an antigenic glycoprotein from Influenza viruses
  • Hemagglutination assay, a measurement of viruses or bacteria
  • Linguistics

  • Hausa language, ISO 639-1 code HA
  • Ha language, the language of the Ha people in eastern Africa
  • Ha (kana), in syllabic Japanese script
  • Hāʼ, a letter in the Arabic alphabet
  • Ha (Javanese) (ꦲ), a letter in the Javanese script
  • Mathematics

  • ha (function prefix) (half), a prefix for some trigonometric functions in mathematics
  • Media

  • Ha (Talvin Singh album), 2002
  • 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.

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