Scientific Calculator

Degrees Radians Grads

The equations:

Let the Damping Ratio be z and the amplitude
of two successive peaks be A1 and A2.

       ln (A1 / A2) = Pi * z / sqrt ( 1 - z**2)

      z = 1 / sqrt {1 + [Pi / ln(A1 / A2)]**2}

     Q = 0.5 / DampingRatio  

  ("STO1" for A1 and "STO2" for A2.)

  See also W. Bauer's applet for an animation of a damped oscillator.

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