nanotesla
/ˈnænoʊˌtɛzlə/
noun
- A unit of measurement for magnetic field strength equal to one billionth of a tesla.
- Scientists use nanotesla measurements to study brain activity with magnetoencephalography.
- The sensor can detect magnetic fields as weak as a few nanoteslas.
- Earth's magnetic field is about 50,000 nanoteslas at the surface.