A mostly 3D printed wind vane is printed with the base attached to a ball bearing and magnet so that the four hall sensors positioned in a “plus” configuration at the base can detect direction.

The erosion threshold of sand-mud mixtures is investigated by analyzing the momentum balance of a sand particle or a mud parcel in the mixture bed surface, and a formula for the critical shear stress ...

I’m Farmer Rich, a fruit and vegetable farmer who uses pruning shears throughout my daily work. I also regularly test and develop consumer products, so I know how to vigorously review pruning ...