Latest from Donald E. Simanek

The mirror-produced real image can appear so real that you’ll reach out to grasp it, but your fingers close only on thin air. Read more »


Martin Gardner generously agreed to share with MAKE readers a few magic tricks based on mathematical principles that can be described briefly and performed with no sleight-of-hand skills. Read more »


At 92, philosopher Martin Gardner is still exploring the perplexities of math, science, mystery, and magic. Read more »


This beautiful puzzle was shown to me by Mary Nienhuis, a retired high school mathematics teacher. Read more »