barn

• Substantiv mit zwei Bedeutungen: ein landwirtschaftliches Gebäude zur Lagerung von Getreide oder zur Unterbringung von Tieren und eine Einheit für den Wirkungsquerschnitt in der Kernphysik, die die effektive Zielfläche für die Wechselwirkung von Teilchen angibt.

A noun with two distinct meanings: a farm building used for storing grain or housing animals, and a unit of nuclear cross section in physics representing the effective target area for particle interactions.

1. Farm buildingA2formal

   A large outbuilding on a farm used for storing grain, hay, or animal feed, and for housing livestock.

   Scheune

   • The farmer stored the hay in the barn for winter.
   • Cows were kept in the barn during the cold night.
   • They painted the old barn red to match the farmhouse.

2. Unit of nuclear cross sectionC2formalscientific

   A unit of area used in nuclear physics to measure the effective cross-sectional area of an atomic nucleus for scattering or absorption.

   Barn

   • The cross section for this reaction is measured in barns.
   • One barn equals 10^-28 square meters.
   • The experiment recorded a cross section of 2.5 barns.