---------------------- multipart/alternative attachment To all interested parties: Acceleration fundementals defined: Accelerometers measure acceleration, vibration, and shock. An accelerometer involves the mounting of a seismic mass attached to a damper and a spring inside a solid casing. The movement of the mass inside the casing is proportional to the force of acceleration on the device. Many accelerometers use either a capacitive or piezoelectric sensor to measure the position of the mass. Accelerometers are specified by the range, frequency response, and the sensitivity of the device. -- Acceleration, vibration, and shock: 1. output units, mV/g 2. seismic mass, damper, and spring 3. second derivative of displacement 4. capacitive (AC excitation) 5. piezoelectric (charge amplifiers) -- Range, frequency response, sensitivity taken from http://zone.ni.com/devzone/conceptd.nsf/webmain/ John Delacour wrote: > At 1:47 AM -0800 12/19/01, Robin Hufford wrote: > >In the interests of amicable discussion I would have to say however that > >as the members of this list are at least able to operate computers and are, > >evidently, literate, it is not likely they misconstrue what an > >accelerometer is > >or what it can do although in point of fact the motion itself is not what is > >measured but rather the time rate of change of velocity... > > I'm afraid, Robin, that likelihood is very real indeed! It really > does appear that they think it is measuring bodily movement, > fantastic though you and I find that. > > JD -- Richard Brekne RPT, N.P.T.F. Bergen, Norway mailto:rbrekne@broadpark.no http://home.broadpark.no/~rbrekne/ricmain.html ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/a4/ba/e9/38/attachment.htm ---------------------- multipart/alternative attachment--
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