On 4/26/14, 5:11 AM, Jim wrote:
Thanks to all. Your answers have helped me understand these principles
better. I went looking online for a u-shape tube in order to see an
example of the popular 'electricity as hydraulics' analogy. I did not
find one but I did find this wikipedia article on 'electricity as
hydraulics'. http://en.wikipedia.org/wiki/Hydraulic_analogy I will
have to study the issue in depth in order to understand LC circuits
clearly. I am showing my coil to some middle school children on
Thursday and was planning on bringing a pendulum in order to help teach
the concept of LC circuits. I kinda like the water sloshing back and
forth in a glass tube analogy.
I'd seriously consider trying the coupled pendulum experiment.
Lots of ways to do it, but here's an easy one.
Get a broomstick or piece of pipe that's 4 feet long, approximately.
Hang two pendulums (weight on a string) from the pipe, spaced about a
foot apart. Make the pendulum around 2-3 feet long, so the period is
reasonably slow.
Set the broom stick across the backs of two chairs facing away from
each other, so a couple sawhorses, etc. The pendulums need to hang
free, and the broom stick needs to be free to move a bit.
Start *one* of the pendulums swinging.
Watch
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