Concept information
Preferred term
accelerometer
Definition(s)
- An accelerometer is a tool that measures proper acceleration. Proper acceleration is the acceleration (the rate of change of velocity) of a body in its own instantaneous rest frame; this is different from coordinate acceleration, which is acceleration in a fixed coordinate system. For example, an accelerometer at rest on the surface of the Earth will measure an acceleration due to Earth's gravity, straight upwards (by definition) of g ≈ 9.81 m/s². By contrast, accelerometers in free fall (falling toward the center of the Earth at a rate of about 9.81 m/s² will measure zero. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Accelerometer)
Broader concept(s)
In other languages
-
French
URI
http://data.loterre.fr/ark:/67375/MDL-JKC9CZS8-B
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