When a Soil Moisture Sensor Registers Distilled Water "Dry As A Bone"

Environmental & Science Education, STEM, Science & Society, Miscellaneous

Ed Hessler

Contributor Ben Selinger, writing for the Office for Science and Society at McGill University wonders about a moisture sensor device  that reported distilled water as "dry." 

 

Hmmmm.

The instrument is used to measure soil moisture in house plant pots.

He includes a little experiment you can do with such a sensor to explore the behavior of the instrument.

Then he explains what is going on.

The short essay.

 

About Ben Selinger.