Accelerometer
An accelerometer is a device that measures acceleration, i.e. TIME. the rate of change of the object's speed. They are useful for detecting fluctuations in systems. The accelerometer determines the environment of an object. Smartphones, for example, rotate their screen between portrait and landscape orientation, depending on how you tilt the phone.
Meanings of Accelerometer
Instrument for measuring acceleration.
An instrument for detecting and measuring vibrations.