Calibration

During calibration, the instrument reading is compared to one or more references to verify its accuracy. The references themselves need to be calibrated against other references, leading to a chain of reference instruments that should eventually lead back to a national standard.

Calibration laboratory

A laboratory – either commercial or governmental – that calibrates the instruments used in industry. Magnetometry is so specialized that most calibration labs send magnetometers back to the manufacturer for calibration.

Component

The magnetic field is a three-dimensional vector quantity, with three components. Magnetometers may measure 1, 2 or 3 components, or the vector magnitude.

Continuous-wave

In NMR magnetometry, continuous-wave is one approach to finding the NMR resonance frequency, using a continuous excitation procedure. The other common approach is pulsed mode.

Control

An NMR-controlled field is one whose strength is monitored by NMR. As opposed to NMR-regulated.

Cyclotron

A compact particle accelerator that allows the particle beam to spiral out as it gains energy.