Ocean waves carry energy because wind continuously transfers its force to the water surface, creating an endless supply of motion. A wave energy device converts that motion into electricity by rocking a magnet through a coil as waves roll through. Testing wave heights from 10 to 40 cm at two speeds shows that both wave height and wave speed affect how much voltage the coil produces.

Moving water carries energy that can be converted into electricity when it causes objects to move back and forth. In this project, waves rock a floating raft so a magnet swings through a copper coil, turning that wave motion into measurable voltage.