angströmyksikköön
The angström is a unit of length equal to one ten-billionth of a meter (10<sup>-10</sup> meters). It is commonly used to express the wavelengths of electromagnetic radiation such as visible light, and to measure the size of atoms and molecules. The unit is named after the Swedish physicist Anders Jonas Ångström, who was one of the founders of the science of spectroscopy.
The symbol for the angström is Å. One angström is equivalent to 100 picometers or 0.1 nanometers.
For example, the diameter of a typical atom is on the order of one angström. The wavelength