Angstrom

A unit of length, 1 ångström (1 Å) equals 10^-10 metres or 0.1 nanometres. It is named after the Swedish physicist Anders Jonas Ångström. This unit is sometimes used for measuring the diameters of atoms, which are typically around two to three Å. For a list of objects of size 1 to 10 Å, see 1e-10 m.

This is a non-SI unit, and is therefore considered deprecated. Nanometres or picometres can easily be used instead. However, many scientists gleefully use deprecated units of measure, despite the precriptive precepts of people who white sentences like the one preceeding this one.

See also: conversion of units.