Bohr model - hydrogen atom — The cake model of the hydrogen atom (Z = 1) or a hydrogen-like ion (Z > 1), where the negatively charged electron confined to an atomic shell encircles a small, positively charged atomic nucleus and where an electron jumps between orbits, is accompanied by an emitted or absorbed amount of electromagnetic energy (hν). The orbits in which the electron may travel are shown as grey circles; their radius increases as n2, where n is the principal quantum number. The 3 → 2 transition depicted here produces the first line of the Balmer series, and for hydrogen (Z = 1) it results in a photon of wavelength 656 nm (red light). Photo Credit: By JabberWok, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=2639910
Bohr model - hydrogen atom
The cake model of the hydrogen atom (Z = 1) or a hydrogen-like ion (Z > 1), where the negatively charged electron confined to an atomic shell encircles a small, positively charged atomic nucleus and where an electron jumps between orbits, is accompanied by an emitted or absorbed amount of electromagnetic energy (hν). The orbits in which the electron may travel are shown as grey circles; their radius increases as n2, where n is the principal quantum number. The 3 → 2 transition depicted here produces the first line of the Balmer series, and for hydrogen (Z = 1) it results in a photon of wavelength 656 nm (red light).
Werner Heisenberg (left) with Bohr at the Copenhagen Conference in 1934 — Photo Credit: By Fermilab, U.S. Department of Energy - Public Domain, https://commons.wikimedia.org/w/index.php?curid=6877522
Fritjof Capra — Photo Credit: By Zenobia Barlow - Donated by the Center for Ecoliteracy with permission for publication. http://www.ecoliteracy.org/, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=14736022
Field where the Battle of Llantada occurred — Photo Credit: By Valdavia - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=9500129
By Jebulon - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=9570239 — Photo Credit: By Jebulon - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=9570239
Tomb of El Cid and Doña Jimena — en el crucero de la Catedral de Burgos Photo Credit: By Zarateman - Own work, CC0, https://commons.wikimedia.org/w/index.php?curid=20585899
Modern sculptures representing El Cid & Jimena — Fiestas de Burgos Photo Credit: By Jesús Serna - Own work, CC BY-SA 2.5, https://commons.wikimedia.org/w/index.php?curid=2949507