how many meters in a petameter
A petametre (American spelling: petameter, symbol: Pm) is a unit of length equal to 10^15 metres. âºâº Definition: Micrometer A micrometre (American spelling: micrometer, symbol Âµm) is an SI unit of length equal to one millionth of a metre, or about a tenth of the size of a droplet of mist or fog. It is also commonly known as a micron, although that term is officially outdated. It can be written in the expanded mathmatical notation (1Ã10-6 m)