Notch

A notch is a tapered or wedge- shaped, natural or made ​​incision.

A tree trunk can be cut down by wrapping a notch. The felling consists of applying a score, a case notch and a back cut. The tally stick is a timber with a series of markings ( notches ) to the transcript of a enumeration and served as a means of payment. It is sometimes also called himself " notch ". The notch cut ( also wedge cut ) is a simple and old carving has to be removed in the triangular wedges of the material (eg, wood ) to produce a larger pattern or image (notch cut ornament ). A finer carving of wood, for example, the three -section.

Notch in the mechanics

Notches are targets of the notch effect of notched bodies, voltage, train or torsional forces acting on the. They are often undesirable flaws, but can also serve as predetermined breaking points. Are typical of a notch stress risers caused by a change in the material properties, such as modulus of elasticity, as related by a material notch is spoken.

Etymology and spreading the word " notch "

The West Germanic verb scores derived from the Indo-European root word gerbh and had to scratch or scrape the meaning. Related Words of scores in other languages ​​are Kerven in Dutch and to carve in English. Related is also the Greek word ( scratch and write) gráphein, which again can be found in the "Graphics ".

The word is reflected in the names of insect or insects to insects.

Sayings

  • Something to answer for who ( formerly have debts now be guilty of something )
  • Keep hitting the same line ( and thereby weaken the tree or today, the position of another person at one point, always take up the same, often unpleasant topic)

Swell

  • Duden - German Universalwörtbuch, Duden, Mannheim, Germany - Leipzig - Vienna - Zurich 2003, ISBN 3-411-05505-7
  • Duden - Herkunftswörtbuch, Duden, Mannheim - Vienna - Zurich 1989, ISBN 3-411-20907-0
  • Space geometry
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