Resonator Resonator A resonator is a device or system that exhibits resonance or resonant behavior, that is, it naturally oscillates at some frequencies, called its resonant frequencies, with greater amplitude than at others. The oscillations in a resonator can be either electromagnetic or mechanical (including acoustic). Resonators are used to either generate waves of specific frequencies or to select specific frequencies from a signal. Musical instruments use acoustic resonators that produce sound waves of specific tones. Another example is quartz crystals used in electronic devices such as radio transmitters and quartz watches to produce oscillations of very precise frequency. A cavity
Metaphor in philosophy Hegel’s Absolute Consciousness. The main arguments against this universalism invoke metaphor on two related accounts: (1) the fact that key epistemological concepts have metaphors at their root, for example, “mirroring”, “correspondence”, “sense data”, is taken as evidence of the contingent, communal, subjective basis of knowledge, and (2) because metaphor (as a form of dislocated or dislocating predication) works by testing the appropriate with the inappropriate, it is seen as a means of challenging the boundaries whereby one subject defines itself in relation to another. Metaphor in philosophy Metaphor, the description of one thing as something else, has become of interest