You'd think the iPhone panopticon would make two-party consent laws look antiquated. Yet some states are enforcing them more vigorously than ever. In Illinois, for example, civil-liberties advocates are challenging a law that says you can be thrown in jail for 15 years for recording a conversation with a police officer.
The use of weighting networks gives a single number as a measure of vibration exposure and is expressed as the frequency-weighted vibration exposure in metres per second squared (m/s2), units of acceleration. Vibration meters equipped with accelerometers can be used for instantaneous vibration measurement.
An impulse vibration measurement involves striking the object, often with a âcalibrated hammerâ that measures impact force, and then measuring the resulting vibration of the object. This type of test reveals resonances within the object to help predict its behavior in operating conditions.