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Michael Edmiston wrote:
It seems to me that having examples [and counterexamples]
is good thing to help students see the difference.
Yes.
I think there is a similar situation with the superposition principle.
It happens so often that students wonder if there is anything that
doesn't follow the SP. Are there truly cases where "2+2 comes out 3 or
5?" Some examples sort of exist in biology.
Don't forget the physics examples!!!!!!!
IMHO this goes right to the core of what modern physics is.
Salient examples include
-- clouds
-- lasers
-- electrons in atoms, and electrons in metals
-- ducks on a pond
This is discussed in detail, with illustrations, at
http://www.av8n.com/physics/wave-add.htm
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