Ogive

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Ribbed vault
The payload fairing of the Atlas V (5XX) has an ogive tip

The ogive is a shape in two dimensions that is created by the intersection of two circular arcs and in three dimensions it is the corresponding three-dimensional body of revolution . The word Ogive is derived from the French word ogive (= "pointed arch"), the exact origin of which is unclear.

mathematics

Depending on their geometric construction specification, a distinction is made between tangential and secant logs .

The s-shaped curve of a function is also sometimes referred to as an ogive, especially the distribution function of the normal distribution . For use in the cumulative frequency distribution of the empirical distribution function, see Ogive (statistics) .

architecture

The now outdated name for the Gothic cross rib of the rib vault is derived from the French term architecture ogivale .

Ballistics and aerodynamics

The word was also adopted for the profile of the tips of long ballistic projectiles , rockets, missiles or floating bodies, which are ogivoid in the longitudinal section and which should have the lowest possible (air) resistance during their movement. Here, the term ogive is understood to mean a pointed, streamlined body of revolution. Specific examples are the Haacksche Ogive or the Von-Kármán-Ogive .

medicine

In connection with so-called atraumatic puncture needles for lumbar puncture or for spinal anesthesia , the designation ogive is also used to denote the special shape of the needle tip.

Glaciology, volcanology

An arched surface shape of a glacier is called an ogive ( details there ), as is a flow bulge on the surface of a lava flow .

music

Four piano pieces by Erik Satie from the late 1880s, known as Ogive, were inspired by the windows of Notre Dame de Paris , according to Satie .

Midi versions of the ogives:

Individual evidence

  1. ↑ Duden online. Retrieved June 3, 2015 .
  2. ↑ Le Trésor de la Langue Française online. Retrieved June 3, 2015 .
  3. ^ Hans Murawski , Wilhelm Meyer : Geological dictionary . 12th revised and expanded edition. Spektrum Akademischer Verlag , Heidelberg 2010, ISBN 978-3-8274-2244-6 , entry "Ogive".