Marcel Vogel claimed to be able to duplicate the "Backster effect" using plants as transducers for bio-energetic fields from the human mind.
One outcome from this transition to using measurement transducers is, for example, that a Speer reloading manual from 1987 lists all SAAMI pressures in CUP, while current references list nearly all pressures in PSI.
From 1949 until 1954, Daniel worked at Aerojet designing, building and installing transducers for control, feedback and measurement of rockets during flight and static tests.
Harvard Apparatus also developed first volume controlled- and then pressure controlled ventilators, pulsatile blood pumps, transducers, amplifiers, recorders, glassware and many other specialized bioscience research products.
For NATO EPVAT testing of military firearms ammunition NATO design EPVAT test barrels with Kistler 6215 transducers are used.
In past decades, ESS of California produced a series of hybrid loudspeakers using such tweeters, along with conventional woofers, referring to them as Heil transducers after their inventor, Oskar Heil.
GPS intelligent buoys (GIB) systems are inverted LBL devices where the transducers are replaced by floating buoys, self-positioned by GPS.