Stability for Elephant Toys

What is stability? Center of mass, center of support play with shampoo bottles in water. Define upright, then identify righting moment by speed of return. Add steel rods, experiment. Diagram. Center of buoyancy = center of support. Center of mass below center of...

Introduction to Mechanisms, part 1.

Introduction to Mechanisms, part 1. Wooden Toy Mechanism. Students assemble mechanism from kit. There are only a couple of ways to do it, see what makes sense. How do we describe, and thus come to understand, this mechanism? Simple Machines: Base: The platform on...

Sea Level Rise is coming, and we have to move.

“In a country convinced it can innovate or spend its way out of any challenge, the simple idea that humans need to relocate is a profoundly challenging vision. It’s perhaps politically braver than many of the alternatives, even if it might seem obvious in a...