Alexei Zinovyevich Petrov (28.10.1910-9.05.1972) was a Soviet theoretical physicist and an academician of the Academy of Sciences of the Ukrainian SSR (1969).
Vasily Vladimirovich Petrov (19.07.1761 - 3.08.1834) was a Russian physicist and electrical engineer and an academician (1815; corresponding member 1802).
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.
Physics formulas are absolutely essential: armed with them, anyone who has decided to study this science can feel entirely at home in the world of physics.