Encyclopedia > Atto

Article Content

Atto

Atto- is a prefix (see all prefixes) to a unit and means that it is 10^-18 times this unit.

Examples are one attosecond or one attometer. The origin of this prefix is the Danish word atten, which means eighteen.

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

East Marion, New York

... density is 139.0/km² (360.6/mi²). There are 744 housing units at an average density of 136.8/km² (354.8/mi²). The racial makeup of the town is 95.24% ...