I still say this is bologna, but since it can't be scientifically proven and I can't disprove it, I guess I'm stuck.
"Water Witching" or "Dowsing," to be a little less pagan, is the technique of using a "Y" shaped branch or two metal "L" shaped rods to detect underground water sources. There's nothing to say about how it actually works beyond that you're supposed to hold your sticks, wood or metal, in your hands at about chest level. When you walk over an area of land that covers an underground water source, the branch supposedly dips down or the metal rods cross each other to form an "X." That's it. No scientific explanation to speak of.
(My student Joel tries his hand at holding the witching sticks.)
The people I work with guess that somehow an electric current travels from the underground water, through a person's body, and then affects the metal rods, or, perhaps, that the water in the soil somehow attracts the water in a branch to itself. Heaven help anyone who tried this around the Puritans because they would have been hung real fast. This is about as close to real life magic as I've gotten.
I was the biggest scoffer when Jim and Laura Propst said that we were going to use these sticky things to go find a good site for a well. However, to prove their point, we did a couple of practice rounds directly over the site of an already existing well that clearly has water in it, and sure enough our metal rods crossed all over themselves when the person holding them stood above the well. I thought that surely everyone was messing with me until I also tried it and found that without moving my hands or thinking, "magical thoughts" the rods crossed even more adamantly in my hands in my hands than in anyone else's. How ironic.
Then, with my new found interest, we took our sticks out to the bush and walked around for a bit trying to locate the underground water that had somehow eluded professional surveyors. We actually did get a bit of activity a few hundred meters away from where the surveyors tried, and failed, to get a spout of water. If our project ever gets a little more money, perhaps we can try this bewitched site...
(Rendille children trying to figure out what in the world this white man is doing walking around, paying very close attention to two sticks in his hands.)
Yeah... don't worry, your first impression was the right one.
ReplyDeleteYou actually experienced what's called the observer-expectancy effect. You knew where the existing well was, which gave you a cognitive bias.
All properly controlled tests of dowsing have accounted for this effect and time after countless time, dowsing has been demonstrated to be little better than guessing in effectiveness.
So feel free to go back to calling it 'water witching'. :-)