intelligent pills

Post date: May 20, 2014 5:34:1 PM

They are activated by stomach acid and are powered much like 'potato batteries', in which two different metals generate a current when inserted into the vegetable.

Each sensor contains a tiny amount of copper and magnesium, says Thompson. “If you swallow one of these devices, you are the potato that creates a voltage, and we use that to power the device that creates the signal”.