The Earth has a layer of air around it ... A weather vane shows wind direction. The top turns to face the wind. You can compare this with the points of the compass, N for north, E for east ...

Just yesterday we talked about C.A.P.E. ( Convective, Available, Potential, Energy) and how it's one of many ingredients needed to make storms happen. Cape is basically the energy for the storms, or ...

Incredibly simple and effective as long as our machine or process is not time sensitive – perfect for a weather station temperature sensor, although wind direction is slightly more complicated.