The oxygen sensor is a simple device that is able to demonstrate a practical use of electrochemical cells, it is inexpensive and safe to use in a s
In this article we show how similar principles can be used to move a polystyrene ball in a circular path.
Matter can be described and explained in a number of ways, using models of increasing complexity depending on the intended audience.
The notorious ease with which headphone flex becomes knotted provides the basis for classroom projects showing how cutting-edge mathematics and exp
Entropy is more usually studied in physics and chemistry but can also be considered in biology to explain limitations of energy changes in life-pro
In the Bohr theory of the atom, electrons are pictured as particles moving in fixed paths, or orbits, around the nucleus rather like planets revo