Alternatively , resonant technology may be employed by exposing the resonating element itself to the media , whereby the resonant frequency is dependent upon the density of the media .
This technology may be used in conjunction with a force collector , such as those in the category above .
Resonant technology may be employed by exposing the resonating element itself to the media , whereby the resonant frequency is dependent upon the density of the media .
This technology may be used in conjunction with a force collector , such as those in the category above .