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The 46 pages that link to Bohr model, each with the reason it gives.

• Quantum mechanicsBroader topic: It applied quantization to atomic spectra before modern quantum mechanics.

• Angular momentumRelated: Its original quantization rule assigned discrete angular momentum to electron orbits.

• Niels BohrBroader topic: Bohr’s 1913 model made quantized electron states central to atomic theory.

• Atomic orbitalCompared with: Unlike Bohr’s paths, orbitals describe quantum states without definite electron trajectories.

• Hydrogen atomCompared with: It predicts hydrogen’s main spectral energies but not its full quantum structure.

• Electron shellCompared with: Its fixed orbits resemble shells visually but are not modern electron states.

• Erwin SchrödingerCompared with: Schrödinger’s wave mechanics replaced the model’s prescribed electron orbits with quantum states.

• Atomic spectrumRelated: It explained hydrogen’s line spectrum by assigning discrete electron energies.

• Fraunhofer linesRelated: Quantized energy levels help explain why atoms absorb only particular wavelengths.

• Old quantum theoryBroader topic: Its allowed electron orbits were an early application of quantum rules to classical motion.

• Atomic theoryCompared with: It improved on Rutherford’s model but was superseded by quantum mechanics.

• Louis de BroglieCompared with: De Broglie explained allowed Bohr orbits as standing matter waves.

• Rydberg formulaRelated: Its energy-level rule yields the hydrogen form of the formula.

• Arnold SommerfeldNarrower topic: Sommerfeld’s model grew from Bohr’s quantized-orbit framework.

• Coulomb potentialRelated: Its bound-state energy levels follow from combining the Coulomb potential with quantized orbital motion.

• InstrumentalismBroader topic: Its limited predictive successes coexist with a picture of atomic structure later superseded.

• Principal quantum numberRelated: It introduced shell labels corresponding to discrete principal energy levels.

• Rutherford scatteringRelated: Bohr added quantized electron orbits to the nuclear atom left unexplained by scattering.

• Stark effectRelated: The Stark effect challenged and refined early explanations of atomic spectra.

• Balmer seriesRelated: It gave a physical account of the spectral regularities Balmer had fit mathematically.

• Hydrogen spectral seriesRelated: Its quantized hydrogen energy levels provide the basic account of series transitions.

• Rutherford modelRelated: Bohr kept Rutherford’s nucleus while adding stable electron orbits to explain hydrogen’s spectrum.

• Henry MoseleyRelated: Its account of inner-shell electron transitions helped explain Moseley’s characteristic X-ray frequencies.

• Hydrogen spectrumRelated: It first accounted for hydrogen’s spectral lines by assigning discrete energies to its electron.

• Atomic physicsRelated: It introduced quantized atomic states before the modern quantum-mechanical account.

• Bohr magnetonRelated: Its quantized orbital angular momentum leads directly to the characteristic magnetic-moment scale.

• Correspondence principleBroader topic: Its spectral predictions approach classical orbital behavior at high quantum numbers.

• Moseley's lawRelated: Its energy-level predictions help explain why X-ray frequencies scale with nuclear charge.

• Rydberg constantRelated: Its quantized energies explain why hydrogen lines follow a simple constant-scaled pattern.

• Sommerfeld modelNarrower topic: Sommerfeld retained Bohr’s quantized orbits while extending their permitted shapes and energies.

• Geiger–Marsden experimentRelated: It developed the nuclear atom into a model that accounted for atomic spectra.

• James FranckRelated: Franck and Hertz’s observations provided evidence for Bohr’s prediction of discrete atomic energies.

• Bohr radiusRelated: It treats the Bohr radius as the radius of the lowest-energy orbit.

• Franck–Hertz experimentRelated: Franck and Hertz initially connected their measured energy threshold to Bohr’s model.

• Lyman seriesRelated: It first gave a simple account of hydrogen’s discrete spectral lines.

• Plum pudding modelCompared with: It retained a nucleus while adding quantized electron orbits absent from Thomson’s picture.

• Johannes RydbergRelated: Bohr’s model later derived the hydrogen spectrum pattern that Rydberg had described empirically.

• Rydberg atomRelated: Its quantized hydrogen energies anticipated the level structure associated with Rydberg states.

• Valence shellCompared with: Its fixed circular orbits are not the orbitals that define modern shell structure.

• History of atomic theoryCompared with: It explained hydrogen well but failed to describe more complex atoms accurately.

• Rutherford scattering experimentsRelated: Bohr added quantized electron orbits to Rutherford's nuclear atom.

• History of quantum mechanicsBroader topic: It applied quantization to atomic structure and explained hydrogen's spectral lines.

• Atomic propertiesCompared with: Its simple orbit picture contrasts with the orbital-based account of atomic structure.

• History of subatomic physicsRelated: It applied quantum ideas to the spectra of atoms after the nucleus was discovered.

• Joule-secondBroader topic: Its quantization rule assigns angular momentum values in joule-seconds.

• Planck postulateRelated: It applied quantized energies to atomic structure and spectra.