Snap Circuits Science: Pencil And Paper Potentiometer
Friday, September 27, 2013 - 08:40
in Physics & Chemistry
An ordinary No. 2 pencil contains graphite (from the Greek γράφω, graphō which means "to write" or "to draw"). Graphite conducts electricity and you can use your pencil and a piece of paper to draw your own potentiometer then experiment with it using the 555 test circuit. Parts needed for pencil and paper potentiometer: No. 2 pencil Blank white 8 ½ X 11 sheet of printer paper Clear adhesive tape such as Scotch tape (optional) read more