Resonance

Science / Chemistry / Resonance: Description of the ground state of a molecule with delocalized electrons as an average of several Lewis structures. The actual ground state doesn't switch rapidly between the separate structures: it is an average.
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Resonance Effect

Science / Chemistry / Resonance Effect: If electron density at a particular point in a molecule is higher or lower than what you'd expect from a single Lewis structure, and various canonical structures can be drawn to show how electron delo MORE

Magnetic Resonance Imaging (MRI)

Health / First Aid / Magnetic Resonance Imaging (MRI): Medical imaging technique (like X-rays and ultrasound) allowing physicians to see images of tissues. It is often used to examine the brain or spine. MORE

Fs

Technology / Home Audio / Fs: Fs or Free Air Resonance is the frequency at which a speaker naturally resonates, like a tuning fork. Sometimes known as ringing response. MORE

Fb

Technology / Home Audio / Fb: The tuned frequency of a Vented Enclosure, measured in Hertz. A combination of the resonance frequency of the air in a Port and the resilient pressure of the air in a Ported System. Below this point t MORE

Qtc

Technology / Home Audio / Qtc: The total Q or resistance of a woofer and sealed enclosure at the system?€™s resonance frequency, considering all resistive losses. A Qtc of .7 has smoothest response and the lowest resonant frequ MORE

Auctor - Auctoritas

Entertainment / Literature / Auctor - Auctoritas: The Latin word auctor is the source for the modern English word author, but the medieval word carries a special resonance and seriousness the modern word lacks. The terms differ in intellectual connot MORE