With this agreement, the signatories undertook to support meters and kilograms in science and research as well as in economic ...

A nanometer (nm) is a unit of length in the metric system, defined as one billionth (10-9) of a meter (m). The meter is the base unit of length in the International System of Units (SI), making the ...

A nanosecond (ns) is a unit of time in the metric system, equal to one billionth (10-9) of a second (s). The second is the base unit of time in the International System of Units (SI), making the ...

Save guides, add subjects and pick up where you left off with your BBC account. Units from the metric system can be used to describe the mass, volume or length of an object. Mass is measured in ...

Save guides, add subjects and pick up where you left off with your BBC account. The metric system is used to measure the length, mass or capacity of an object. Length is measured in millimetres ...