Planck Time
Version 1.0.0 · Updated 2026-07-28
CORE DEFINITION
In the Planck unit system of physics, Planck time is the fundamental unit of time, defined as the time it takes for a light wave to travel a distance of one Planck length in a vacuum. The Planck unit system is a natural unit system named after Max Planck, who first proposed the concept. Planck time, denoted as t_P, is defined by the equation t_P = sqrt(ℏG/c^5) ≈ 5.39116(13) × 10^-44 seconds, where ℏ is the reduced Planck constant, G is the gravitational constant, and c is the speed of light.
SCAFFOLDING EFFECT
Reduce cognitive load
In the Planck unit system of physics, Planck time is the fundamental unit of time, defined as the time it takes for a light wave to travel a distance of one Planck length in a vacuum. The Planck unit system is a natural unit system named after Max Planck, who first proposed the concept. Planck time, denoted as t_P, is defined by the equation t_P = sqrt(ℏG/c^5) ≈ 5.39116(13) × 10^-44 seconds.
Anchor fast decisions
Planck time is the smallest time scale constructed from fundamental constants (approximately 5.39×10^-44 seconds). Below this scale, existing physical laws break down, and it represents a possible lower limit for the quantization of spacetime.
MINIMUM ACTION
In progress 0/2Practice this model in one real situation:
account_treeGenealogyexpand_more
menu_bookReferencesexpand_more
Source support: Explicit
- zh.wikipedia.orghttps://zh.wikipedia.org/wiki/%E6%99%AE%E6%9C%97%E5%85%8B%E6%99%82%E9%96%93verified
PRIVATE NOTES · Only visible to you
SAVED Q&A
ENTRY Q&A · Private saving available
Ask with a clear boundary
thinkingmodels answers from published entry context only.
Your question is sent to thinkingmodels. The answer uses public entry context only.
RELATED MODELS