ratio of damping
21Audio system measurements — are made for several purposes. Designers take measurements so that they can specify the performance of a piece of equipment. Maintenance engineers make them to ensure equipment is still working to specification, or to ensure that the cumulative… …
22Logarithmic decrement — Logarithmic decrement, δ, is used to find the damping ratio of an underdamped system in the time domain. The damping ratio is related to the natural log of any two amplitudes. : delta = frac{1}{n} ln frac{x 0}{x n}, where x 0 is the greater of… …
23Quartz crystal microbalance — A quartz crystal microbalance (QCM) measures a mass per unit area by measuring the change in frequency of a quartz crystal resonator. The resonance is disturbed by the addition or removal of a small mass due to oxide growth/decay or film… …
24Moto Guzzi California — The Moto Guzzi California (aka Cali) is a motorcycle manufactured by Italian company Moto Guzzi since 1971, bringing together the company s heritage, their iconic air cooled 90° V twin engines and styling that evokes the classic American Cruiser… …
25RLC circuit — A series RLC circuit: a resistor, inductor, and a capacitor An RLC circuit (or LCR circuit) is an electrical circuit consisting of a resistor, an inductor, and a capacitor, connected in series or in parallel. The RLC part of the name is due to… …
26Q factor — For other uses of the terms Q and Q factor see Q value. In physics and engineering the quality factor or Q factor is a dimensionless parameter that compares the time constant for decay of an oscillating physical system s amplitude to its… …
27Honda XR series — The Honda XR series motorcycle is a range of single cylinder Four Stroke off road motorcycles that were designed in Japan and assembled all over the world. This series of motorcycle is gradually being replaced with similar CRF series motorcycles …
28Greek letters used in mathematics, science, and engineering — Greek alphabet Αα Alpha Νν Nu Ββ Beta …
29Ferrari F50 — Infobox Automobile name=Ferrari F50 manufacturer=Ferrari parent company = Fiat Group layout=RMR layout production=1995 ndash;1997 (349 produced) assembly=Maranello, Italy predecessor=Ferrari F40 successor=Ferrari Enzo related=Ferrari F50 GT body… …
30Earthquake engineering — is the study of the behavior of buildings and structures subject to seismic loading. It is a subset of both structural and civil engineering.The main objectives of earthquake engineering are: * Understand the interaction between buildings or… …
