This exhibit along together with Sun Energy show the physics of two popular alternative energy sources. Sun Energy models day-night and seasonal solar energy at several points on the globe. Visitors can see why we get winter - it's not because the earth is further away from the sun then, and why summer days are longer, and why the arctic regions are the land of the midnight sun. In Wind Energy we allow the visitor to discover how the pitch and diameter of a windmill turbine is related to how much energy we can get from the wind and how little wind is required to drive the turbine. These are great examples of the mechanical genius we bring to our exhibit development.