Glossary term: Nanometer
Description: One nanometer is one-billionth of a meter. Its symbol is nm. A human hair is approximately 80,000–100,000 nm wide, about the same as the thickness of a piece of paper. A strand of human DNA is about 2.5 nm in diameter. A water molecule is less than 1 nm across. The wavelength of visible light can be measured in nm. Typically, the human eye can detect wavelengths from 380 nm (violet) to 700 nm (red).See this term in other languages
Term and definition status: This term and its definition is still awaiting approval
The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".