3D printing a hypercube
How can you visualize a 4D object in our 3D world? The answer involves some tricky projections and a 3D printer. Mathematician and artist Henry Segerman of Oklahoma State University, Stillwater, described his method for representing a hypercube—a 4D cube.
More information: http://news.sciencemag.org/math/2015/02/how-3d-print-hypercube
