[NewCandle] Resonance and Circulation: an introduction

[Keith Nagel]

Hi All,

Consider the following analogy.

I cut a circular trough in a piece of plastic and fill it
with water. If I stick my finger into the water and bob
it up and down, I'll make clockwise and counterclockwise
waves. When those waves add constructively, I get a
resonance and the wave seems to stand still in the water
and grow.

Alternately I can also push the water in a synchronous fashion
in one direction or the other and generate a wave that circles around
the trough. This is a circulation and the wave will be seen
to move around the trough and grow.

Doing this with electricity and transmission lines, I get
a resonance where the current and voltage are 90 degrees out of
phase and a circulation where the current and voltage
are in phase.

K.