Refraction modelQuick View

Refraction model

Simple flash model of a lorry driving across a landslide that shows how a wave is refracted. Rescued from the now defunct TRE
Oscilloscope Simulator or SuperpositionQuick View

Oscilloscope Simulator or Superposition

I wanted a foolproof way of showing superposition and wondered if it could be done in Excel. This is the result. I use the resulting graph on the Interactive Whiteboard sometimes as examples of different types of waves.