[Sirius Lee]

Heteros dinning:

Heterodyning:

Know the difference.

[higgmeister]

Yes, it's all beat patterns and nothing to do with earthquakes or glaciers calving.   The fact that the Atlantic and the Pacific crash into each other south of Cape Horn, does exacerbate the compounded wave cycles.

I'll never forget the day I proved to the whole office that 2600 Hz Signal Frequencies from two different oscillators from each end of the country would drift and occasionally reach 180° out of phase cancelling each other out causing the phone connection to drop off.

Frequency waves act like ocean waves.