Human Circuits

There are several batteries which apply a voltage, and you can complete various different circuits by holding the contacts. With some friends you can make more. You can make parallel circuits, explore resistance and connect batteries in different orientations.

The Exhibit measures the sub microamp currents and causes a flow of leds (like in christmas lights) proportional to this current.

Human current visualising sticks

It is often hard to visualise electric current because it is invisible, these sticks let you see the electric current flowing by creating a flow of lit LEDs like some christmas tree lights. They can detect the very small currents (microamps) that flow through your body when you touch both ends of an AA battery.

You can use them to show the difference between series and parallel circuits in a really visual way.