# PlanckPlay Drop-In Workshop

PlanckPlay Drop-In Workshop at Janusz-Korczak-Bibliothek, Monday 2 November 2026, 16:00.

A drop-in workshop centered on PlanckPlay, a 3D-printed model of the sixteen tetrahedra that make up Planck's Hexadecachoron. The 4D metamodel of physics was developed by José Cojal Gonzalez and shows in tangible form how physical theories fit together. Each puzzle piece stands for a physical theory or a central area of physics and leads back to the four fundamental constants G, c, h and k that Max Planck introduced in 1900. It takes place in the youth area of the library, and no registration is needed.

## Dates

- Monday 2 November 16:00 — Janusz-Korczak-Bibliothek
- Tuesday 3 November 16:00 — Janusz-Korczak-Bibliothek

Written by a model, sources: berlin.de