Example image of eyePlorer eyePlorer map for 'Fine-structure constant': Alpha Coupling constant Dimensionless physical constant Electromagnetic force Physics Dimensionless quantity Systems of measurement Standard error (statistics) Coulomb's law Planck constant Speed of light Vacuum permeability Vacuum permittivity Centimetre gram second system of units Electric charge Permittivity Statcoulomb Committee on Data for Science and Technology Anomalous magnetic dipole moment Electron Quantum electrodynamics Quantum Hall effect Gyromagnetic ratio Landé g-factor Feynman diagram Parts-per notation Electrostatics Elementary charge Photon Planck charge Bohr model Hartree Invariant mass Particle physics Electromagnetism Electroweak interaction Gauge theory Weak interaction Perturbation theory (quantum mechanics) Power series Quantum chromodynamics Strong interaction Length scale Logarithm Renormalization group Positron Fundamental interaction Grand unification theory Landau pole Arnold Sommerfeld