The Online Books Page

Energy levels (Quantum mechanics)

See also what's at Wikipedia, your library, or elsewhere.

• Quantum theory

• Decay schemes (Radioactivity)

• Energy states (Quantum mechanics)

• Buildup of Cf-252 and Intermediate Isotopes from Cm-244 in a High Flux (Argonne, IL: Argonne National Laboratory, 1961), by Susanne E. Vandenbosch and Paul R. Fields (page images at HathiTrust)

• Photoconductivity of Solids (New York and London: J. Wiley and Sons, c1960), by Richard H. Bube (page images at HathiTrust)

Items below (if any) are from related and broader terms.

• Lectures on Quantum Physics and Applications (c1980), by Paul E. Dimotakis (PDF at Caltech)
• The Grand Unified Theory of Classical Quantum Mechanics (electronic edition, 2005), by Randell L. Mills (PDF files with commentary at blacklightpower.com)
• The Fourth Dimension: Toward a Geometry of Higher Reality (free online edition, c2014), by Rudy v. B. Rucker, contrib. by Martin Gardner (illustrated HTML at rudyrucker.com)
• Fields (electronic edition, 2002), by Warren Siegel (PDF and Postscript with commentary at sunysb.edu)
• Materiewellen und Quantenmechanik: Eine Elementare Einführung auf Grund der Theorien De Broglies, Schrödingers und Heisenbergs (in German; Leipzig: Akademische Verlagsgesellschaft M. b. H., 1928), by Arthur Erich Haas
  • multiple formats at archive.org
  • page images at HathiTrust; US access only
• Properties of The Thirty-Two Point Groups (Cambridge, MA: MIT Press, 1963), by George F. Koster, John O. Dimmock, Robert G. Wheeler, and Hermann Statz (page images at HathiTrust)
• Principles of Modern Physics (New York et al.: J Wiley and Sons, c1958), by A. P. French (page images at HathiTrust)
• Multipole Fields (New York: J. Wiley and Sons; London: Chapman and Hall, 1955), by Morris Edgar Rose (page images at HathiTrust)

• From C-Numbers to Q-Numbers: The Classical Analogy in the History of Quantum Theory (Berkeley: University of California Press, 1992), by Olivier Darrigol (HTML at UC Press)

• The Cellular Automaton Interpretation of Quantum Mechanics (c2016), by G. 't Hooft (PDF and EPub with commentary at springer.com)

• Quantum: The Open Journal for Quantum Science (2017-) (full serial archives)

• Quantum Topology (partial serial archives)
• Annales de l'Institut Henri Poincaré D: Combinatorics, Physics and their Interactions (partial serial archives)

• Treatise on Light: In Which Are Explained the Causes of That Which Occurs in Reflexion, and in Refraction, and Particularly in the Strange Refraction of Iceland Crystal (this translation ca. 1912), by Christiaan Huygens, trans. by Silvanus P. Thompson (Gutenberg text and illustrated HTML)

• Treatise on Light: In Which Are Explained the Causes of That Which Occurs in Reflexion, and in Refraction, and Particularly in the Strange Refraction of Iceland Crystal (this translation ca. 1912), by Christiaan Huygens, trans. by Silvanus P. Thompson (Gutenberg text and illustrated HTML)

• Ueber das Elektrische Leitvermogen der Glaser (dissertation in German; 1927), by Martin Fulda
  • multiple formats at Google; US access only
  • page images at HathiTrust; US access only

• Commercializing High-Temperature Superconductivity (1988), by United States Congress Office of Technology Assessment (PDF files at Princeton)

• High-Temperature Superconductivity in Perspective (1990), by United States Congress Office of Technology Assessment
  • page images at HathiTrust
  • PDF files at Princeton

• Calculations of the Penetration of Gamma Rays: Final Report (White Plains, NY: Nuclear Development Associates; Oak Ridge, TN: U.S. Atomic Energy Commission, 1954), by Herbert Goldstein and J. Ernest Wilkins (page images at HathiTrust)

• Transition Curves of 330 Mev Bremsstrahlung (Berkeley, CA: University of California Radiation Laboratory, 1950), by Wade Blocker, Robert W. Kenney, and Wolfgang K. H. Panofsky (page images at HathiTrust)

• Theory of Excitons (New York and London: Academic Press, 1963), by Robert S. Knox (page images at HathiTrust)

• Optical Absorption Coefficients of Fused Silica in the Wavelength Range 0.17 to 3.5 Microns From Room Temperature to 980° C (Washington: National Aeronautics and Space Administration, 1966), by Oliver J. Edwards
  • PDF at nasa.gov
  • multiple formats at archive.org
  • page images at HathiTrust

• An Introduction to the Analysis of Spin-Spin Splitting in High-Resolution Nuclear Magnetic Resonance Spectra (1961), by John D. Roberts (PDF with commentary at Caltech)

• The Solar Spectrum, Lambda 6600 to Lambda 13495 (Carnegie Institution of Washington publication #579; 1947), by Harold D. Babcock and Charlotte Emma Moore (page images at HathiTrust)

• The Laws of Radiation and Absorption: Memoirs by Prévost, Stewart, Kirchhoff, and Kirchhoff and Bunsen (New York et al.: American Book Co. c1901), ed. by D. B. Brace, contrib. by Pierre Prevost, Balfour Stewart, G. Kirchhoff, and R. Bunsen
  • multiple formats at archive.org
  • page images at HathiTrust
• Quantitative Molecular Spectroscopy and Gas Emissivities (Reading, MA and London: Addison-Wesley Pub. Co., c1959), by S. S. Penner (page images at HathiTrust)

• Magnetism and the Chemical Bond (New York: Interscience Publishers, 1963), by John B. Goodenough (page images at HathiTrust)
• Electrons and Chemical Bonding (1965), by Harry B. Gray (PDF with commentary at Caltech)

• Molecular Orbital Theory: An Introductory Lecture Note and Reprint Volume (1965), by Carl Johan Ballhausen and Harry B. Gray (PDF with commentary at Caltech)
• Notes on Molecular Orbital Calculations (New York: W. A. Benjamin, 1961), by John D. Roberts (PDF at Caltech)

• Book Preservation Technologies (1988), by United States Congress Office of Technology Assessment (PDF files at Princeton)

• Understanding and Managing Irrigated Acid Sulfate and Salt-Affected Soils: A Handbook for the Lower Murray Reclaimed Irrigation Area (Adelaide: University of Adelaide Press, c2017), by R. W. Fitzpatrick, Luke Mosley, and Freeman J. Cook (PDF with commentary at Adelaide)

• Ionic Equilibria in Analytical Chemistry (New York and London: J. Wiley and Sons, c1963), by Henry Freiser and Quintus Fernando (page images at HathiTrust)

• Fields (electronic edition, 2002), by Warren Siegel (PDF and Postscript with commentary at sunysb.edu)
• Noncommutative Geometry, Quantum Fields and Motives (prepublication version, ca. 2008), by Alain Connes and Matilde Marcolli (PDF at alainconnes.org)
• Introduction to String Field Theory (1988), by Warren Siegel (PDF and Postscript at arxiv.org)

• Dynamic Nuclear Orientation (New York et al.: Interscience Publishers, 1963), by C. D. Jeffries (page images at HathiTrust)

• How to Use Signal and Sweep Generators (first edition; New York: J. F. Rider, c1953), by J. Richard Johnson (PDF at worldradiohistory.com)

• Lie Algebras In Particle Physics: From Isospin To Unified Theories (second edition; Boca Raton et al: CRC Press, c2021), by Howard Georgi (PDF with commentary at OAPEN)

• Superspace, or One Thousand and One Lessons in Supersymmetry (corrected from the 1983 edition), by S. James Gates, Marcus T. Grisaru, Martin Rocek, and Warren Siegel (PDF at arxiv.org)

• Power Sources for Remote Arctic Applications (OTA-BP-ETI 129; 1994), by United States Congress Office of Technology Assessment (PDF files (with some bad OCR) at Princeton)

• Thermostatics and Thermodynamics: An Introduction to Energy, Information and States of Matter, With Engineering Applications (Princeton, NJ et al.: D. Van Nostrand Co., c1961), by Myron Tribus (page images at HathiTrust)

• Superspace, or One Thousand and One Lessons in Supersymmetry (corrected from the 1983 edition), by S. James Gates, Marcus T. Grisaru, Martin Rocek, and Warren Siegel (PDF at arxiv.org)

• The Grand Unified Theory of Classical Quantum Mechanics (electronic edition, 2005), by Randell L. Mills (PDF files with commentary at blacklightpower.com)

• Why We Are Free: Consciousness, Free Will, and Creativity in a Unified Scientific Worldview (2021), by David Layzer, ed. by Anthony Aguirre and Bob Doyle (PDF with commentary at informationphilosopher.com)

• Wave Mechanics of Crystalline Solids (New York: J. Wiley and Sons, 1961), by R. A. Smith (page images at HathiTrust)

• Spinors, Spectral Geometry, and Riemannian Submersions, by Peter B. Gilkey, John V. Leahy, and Jeonghyeong Park (Postscript files at emis.de)