Václav Petržílka (20.03.1905-9.07.1976) was a Czechoslovak experimental physicist and a member of the Czechoslovak Academy of Sciences, of which he was vice-president in 1956 — 59.
Vasily Vladimirovich Petrov (19.07.1761 - 3.08.1834) was a Russian physicist and electrical engineer and an academician (1815; corresponding member 1802).
Max Karl Ernst Ludwig Planck (23.04.1858 —4.10.1947) — a German theoretical physicist, the founder of quantum theory, a member of the Berlin Academy of Sciences (1894) and its permanent secretary in 1912 — 38.