What is an Angstrom?

Angstrom is a common unit of measurement for the length of light waves and the diameter of molecules. The symbol is "Å". The correct pronunciation of Å is "Europe" and "Egypt". The name of the unit is in honor of the Swedish physicist Ångström (1814-1874). When discussing van der Waals gravity between dust surfaces and other surfaces, Å is also used to measure the distance between surfaces. The diameter of the gas molecules is about 3Å.