self-loosening of nuts and bolts is rarely a good thing. Engineers have come up with dozens of ways to make sure the world doesn’t fall apart, and some work better than others. Let’s explore a ...

all three nuts will spin down the bolt under the force of gravity alone. Although the bidirectional nut doesn’t move as smoothly as the other two, it can change rotation and translation ...

Go here to access the latest issue of Nuts & Bolts. Despite the fact that gender equality is widely recognized as a development objective, many M&E systems do not adequately measure differences in ...