[Georgia (OP)]

Karen has got in touch to ask:

"We are about to bore for water as we live in Cape Town which is experiencing severe water shortage. Could you please explain how water divining devices work - we have people using a forked branch, a brick (!) and two pieces of wire - I need a scientific explanation of how they could possibly work"

What do you think?

[wolfekeeper]

It doesn't work, in all tests involving hidden objects that water diviners claim to be able to detect water diviners perform no better than chance.

https://en.wikipedia.org/wiki/Dowsing