Skip to Content
You searched for
Search
Department Archives Remove constraint Department: Archives Creator Słania, Czesław Remove constraint Creator: Słania, Czesław Format Image Remove constraint Format: Image Subject Atomic structure Remove constraint Subject: Atomic structure Subject Postmarks Remove constraint Subject: Postmarks Subject Denmark Remove constraint Subject: Denmark

Search Constraints

Search Results

    • 1963-Nov-21

    Stamps depict Niels Bohr, the equation for the Bohr frequency condition (an equation relating to light frequency and electrons), and a diagram of the Bohr model of a hydrogen atom.