Title: "Mirovoĭ ėfir" i tëmnai︠a︡ ėnergii︠a︡/tëmnai︠a︡ materii︠a︡
Subjects: Physics, Philosophy, Quantum theory, Quantum chemistry, Mössbauer effect, Positron annihilation
People: Albert Einstein (1879-1955), Dmitry Ivanovich Mendeleyev (1834-1907)