Santa Claus is lightning fast, despite being overweight. So fast that no one can see him! Physics professor Metin Tolan shows us with a wink how he manages to distribute the presents on time on Christmas Eve using classical mechanics and quantum physics. Petra Wiemann
Metin Tolan: Silent Night, Hurry Night
Piper Verlag, 144 pages, € 14,–
ISBN 978-3-492-07428-5