Planck Time

on . Posted in Relativity

Planck time, abbreviated as \(t_p\), is a fundamental unit in the system of Planck units.  It is based on the speed of light, the energies needed to smash particles in the universe at a time equal to the Planck length and universal gravitational constant divided by the speed of light.  It is a useful unit in theoretical physics.

  • \(\large{ t_p = 5.391, 247 \;x\;10^{-44}\;s }\)


Planck Time Formula

\(\large{ t_p = \sqrt{ \frac{ h\;G } { c^5 } } }\) 
Symbol English Metric
\(\large{ t_p }\) = Planck time \(\large{sec}\) \(\large{s}\)
\(\large{ G }\) = gravitational constant \(\large{\frac{lbf-ft^2}{lbm^2}}\)  \(\large{\frac{N - m^2}{kg^2}}\) 
\(\large{ h }\) = Planck constant \(\large{\frac{lbf-ft}{sec}}\) \(\large{J-s}\)
 \(\large{ c }\) = speed of light in vacuum  \(\large{\frac{ft}{sec}}\)  \(\large{\frac{m}{s}}\)


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Tags: Magnetic Equations