Ångström ($1\mathring{\mathrm{A}}=10^{-10}\mathrm{m}$)

An angstrom (symbol: Å) is a unit of measurement that is commonly used to express extremely small distances, particularly at atomic and molecular scales. It is equal to \(10^{-10}\) meters, or 0.1 nanometers (nm). The unit is named after the Swedish physicist Anders Jonas Ångström, who made significant contributions to the field of spectroscopy.