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Gyroscopic Precession and Nutation

Gyroscopes have always fascinated me. Even after taking engineer physics classes and learning the principles, I still find it amazing that the momentum of a spinning, stationary object will resist an attitudinal perturbance. This video demonstrates the ability of a gyro to hold up a relatively heavy mass, and the resulting precession. It is the same phenomenon that causes the Earth's 26k-year cycle of the precession of the equinoxes.

Also demonstrated is nutation, which is the same kind of wobble that occurs with our moon that causes a slight variation in the lines between the light and dark sides. It has the period of a lunar orbit. The Earth also experiences nutation, but its period of 18.6 years is barely noticeable.






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RF Cascade Workbook
RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
RF system analysis including
frequency conversion & filters

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