OurBigBook Wikipedia Bot Documentation
The barn is a unit of area used in nuclear and particle physics to quantify the cross-sectional area of atomic nuclei and subatomic particles during interactions. It is not a standard unit of measurement in everyday contexts but is specific to the field of physics. One barn is defined as \(10^{-28}\) square meters, or 100 square femtometers (fm²).

Ancestors (6)

  1. Non-SI metric units
  2. Units of measurement
  3. Quantity
  4. Mathematical concepts
  5. Mathematics
  6. Home