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Planck time

The Planck time tp is the smallest unit of time. In seconds it is

 


Explanation

It is the time needed to bring about a status change

where

    ℏ Reduced Planck constant
    G Gravitational constant
    c Speed of light

 


Alternative 1

It is the time that light needs to travel a Planck distance

where

    lp Planck length
    c Speed of light

 


History

The name Planck time is a tribute to the German physicist Max Planck (1858 - 1947).


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