Concept information
优选词，正式主题词
plancklengthPlanck Length
定义
- In physics, the Planck length, denoted $\\ell_P$, is a unit of length, equal to $1.616199(97)×10^{-35}$ metres. It is a base unit in the system of Planck units. The Planck length can be defined from three fundamental physical constants: the speed of light in a vacuum, Planck's constant, and the gravitational constant.
上位概念
URI
https://vocab.sentier.dev/qudt/unit/PlanckLength
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