Skip to Content
You searched for
Genre Postage stamps Remove constraint Genre: Postage stamps Creator Słania, Czesław Remove constraint Creator: Słania, Czesław Place Denmark Remove constraint Place: Denmark Subject Atomic structure Remove constraint Subject: Atomic structure Subject Postmarks Remove constraint Subject: Postmarks Subject Commemorative postage stamps Remove constraint Subject: Commemorative postage stamps

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.