Measurement in theory and practice
How do we know that a scale or a thermometer measures correctly? Here you will find professional insight into measurement technology – from basic principles such as measurement uncertainty, calibration and traceability, to specific measurement methods within electricity, volume, mass, temperature and more.
Understanding measurement
Measurement uncertainty expresses the spread of values associated with a measurement result.
For a measurement to be documented, the measurement result must be traceable.
The SI system (Système International d’Unités) is the international system for measuring physical quantities.
A set of educational resources introducing measurement and units to pupils.
Fields of expertise
Electrical measurements are essential in industry, energy supply, electronics and research.
The Norwegian Metrology Service works on developing and maintaining accurate measurement methods for, among other things, air humidity.
Optics deals with the properties of light and how it interacts with matter. Measuring light is more important today than ever before.
The Norwegian Metrology Service is responsible for realising, maintaining and further developing Norway’s national references for time and frequency.
The growing demand for energy and emission targets set to achieve climate goals have increased the focus on gas as an environmentally friendly energy carrier.
The references used as the basis for length measurement have changed significantly throughout history.
The SI unit kilogram is today defined in terms of Planck’s constant.
Temperature is a fundamental physical quantity affecting everything from industry and research to everyday measurements.
Every year, measurements in volume account for enormous economic values in our society. In the oil and gas industry alone, volumes worth hundreds of billions are measured.