出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/06/03 09:50 UTC 版)
In physics and engineering the quality factor or Q factor is a dimensionless parameter that describes how under-damped an oscillator or resonator is, or equivalently, characterizes a resonator's bandwidth relative to its center frequency. Higher Q indicates a lower rate of energy loss relative to the stored energy of the oscillator; the oscillations die out more slowly. A pendulum suspended from a high-quality bearing, oscillating in air, has a high Q, while a pendulum immersed in oil has a low one. Oscillators with high quality factors have low damping so that they ring longer.
![]()
2点
Two points.
the rate of increase
摩擦係数.
屈折率.
the refractive index
臨界角.
the critical angle
面積.
口蓋垂音のr
the uvular r
7 point