An example of a four-dimensional object is the tesseract, also known as hypercube. Just as a cube consists of six square facets, a tesseract comprises eight cubic cells.

More information: Shai Tsesses et al, Four-dimensional conserved topological charge vectors in plasmonic quasicrystals, Science (2025). DOI: 10.1126/science.adt2495 Journal information: Science ...