An explanation of the differences between digital and analogue signals.
An explanation, with particle animations, of conduction, convection and radiation.
Nanotechnology and its use in sunscreen manufacture to reflect UV rays from the sun.
An introduction to UV light and the carcinogenic effects it has on skin.
The seven different types of waves that form the electromagnetic spectrum are introduced.
This clip gives a summary of common uses of electromagnetic waves.
This clip shows how waves can be either reflections, refractions or diffractions.
We have a selection of learner guides