There are few things that can keep a certain kind of mechanically-inclined mind entranced as well as a marble run, and few ...

The Monthly publishes articles, as well as notes and other features, about mathematics and the profession. Its readers span a broad spectrum of mathematical interests, and include professional ...

JANINE: Big crowd in tonight, Jeff. JEFF: Including Bob the superfan. Bob here has never actually seen Jess perform. JANINE: Let’s help him picture her in his head - we can use metaphors and similes.

Some objects provide named attachable parts that you can select instead of using the main geometry for the object. One important kind of attachable part is the inside of a tube. The anchors are all on ...