Planck temperature

The Planck temperature, named after German physicist Max Planck, is the natural unit of temperature, denoted by T_P.

<math>T_P = \frac{m_P c^2}{k} = \sqrt{\frac{\hbar c^5}{G k^2}} =<math> 1.41679 × 10³² K

where:

m_P is the Planck mass

c is the speed of light in a vacuum

<math>\hbar<math> is Dirac's constant

k is the Boltzmann constant

See also

• Planck's constant
• Orders of magnitude (temperature)

External links

• NIST reference: Planck temperature