Step 5
Now join up the Jack Plug between the OUT block terminals and the IN
block as shown and see if you can work out what's happening! We now
have two feed-back loops working in parallel!
Step 4
To help you understand what is going
on, place a card first to break the
light beam link and then, by
placing the card in the "U", the
sound link. You may be able
to do this with your hand also.
Experiment with changing the
distance between the systems
and the color of the LIGHT. Which
is the most powerful, Red, Green or
Yellow? Change the speed of the
PULSE and see the effect.
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