Let's measure
A device for detecting or measuring
Sensor
A substance that can carry electrical current
Conductive material (conductor)
Vibration of electrical current in a conductive material
Oscillation
Speed of vibration of electrical current in a conductor
Frequency
This sensor detects the movement of a heat-emitting body by generating an electric charge when exposed to infra-red radiation
PIR (passive infra-red) motion detector
A passive component made of wound wire that generates a magnetic field when an electric current flows through it
Coil
Waves caused by an electric current
Electromagnetic radiation
A heat-sensitive electrical device consisting of two wires made of dissimilar metals, which is used for measuring temperature
Thermocouple
A mixture of 2 or more metals
Alloy
A property of a body which allows it to stretch like an elastic band
Elasticity
The temperature at which a substance changes state from solid to liquid
Melting point
A theodolite is a measuring instrument that measures a value of this physical quantity
Angle
A substance that produces an electrical charge when its temperature changes
Pyroelectric material
Resistance increase is caused by this phenomenon in a tensometric measuring instrument
Tension
A rod by which signals are transmitted or received as part of a radio or television transmission or receiving system
Aerial
This sensor measures changes of shape in a rigid body
Strain gauge
An electronic component used in some measuring devices to make an electric signal more convenient for further processing
Amplifier
The ability of a substance to flow easily
Fluidity
Synonym of "giving out heat"
Emit (heat)