MadSci Network: Zoology
Query:

Re: How can someone raise worms to the surface using electricity?

Date: Mon Jun 26 00:46:42 2000
Posted By: William Beaty, Electrical Engineer / Physics explainer / K-6 science textbook content provider
Area of science: Zoology
ID: 960348145.Zo
Message:

Hi Carl!

Yes, people have "called nightcrawlers" using metal rods pounded into wet soil. Unfortunately the usual technique requires high voltage and is extremely dangerous. I understand that it takes a fairly hefty current to irritate the worms, and it takes a dangerously high voltage to force that current through the dirt. Electrical experts might know enough about electrical safety to carry this out without dying, but the rest of us should obtain bait at the sporting goods store.

I remember my grandfather mentioning that it's possible to call nightcrawlers with sound. I guess this involves pounding a metal bar into dry soil, then whacking the bar to make a lot of underground noise. This is worth a try, and nobody has to risk accidental death by electrocution.


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