Example image of eyePlorer eyePlorer map for 'Planck length': Fundamental unit Length Physics Planck units Dimensionless physical constant Gravitational constant Planck constant Speed of light Bracket Standard error (statistics) Dimensional analysis Quantization Quantum foam Large extra dimension Black hole thermodynamics Action (physics) Loop quantum gravity String theory Worldsheet Compact dimension Doubly-special relativity Quantum geometry Scale relativity 1 yoctometre Distances shorter than 1 pm Fischler-Susskind mechanism Giovanni Amelino-Camelia Planck particle Planck pressure Planck time World Crystal Empirical limits in science Virtual black hole Electromagnetic spectrum Extension (metaphysics) Scale (spatial) Gravastar Planck epoch String (physics) Planck scale Scientific phenomena named after people Status of special relativity Trans-Planckian problem Peter Woit Planck energy Planck force Lee Smolin Quantum spacetime Asymptotic freedom Quantum time