#physics tool
- Admittance meter — An electronic measuring instrument used for the direct or indirect determination of the electrical admittance of a circuit, device, or semiconductor material; a laboratory tool structurally designed to evaluate both the active component (conductance) and the reactive component (susceptance) under high-frequency alternating current conditions.
- Airborne magnetometer — A high-precision geophysical apparatus mounted on board an aircraft or towed behind it in an aerodynamic pod, used for the continuous measurement and recording of the Earth's magnetic field intensity during flight. This instrument eliminates the magnetic interference of the fuselage and enables the remote detection of anomalies caused by geological structures or mineral deposits.