An accelerometer measures proper acceleration, which is the acceleration it experiences relative to freefall and is the acceleration felt by people and objects. Put another way, at any point in spacetime the

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Conceptually, an accelerometer is a damped mass, a proof mass, on a spring. When the accelerometer experiences an acceleration, the mass is moved to the point that the spring can

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Engineering
Accelerometers can be used to measure vehicle acceleration. Accelerometers can be used to measure vibration on cars, machines, buildings,

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• Bulk micromachined capacitive
• Bulk micromachined piezoelectric resistive
• Capacitive spring mass system base

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• Accelerograph
• Degrees of freedom
• g-force

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Accelerometer data, which can be accessed by third-party apps without user permission in many mobile devices, has been used to infer rich information about users based on the

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