Planck temperature

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

T_P = (c⁵ <math>\hbar<math>/ G)^1/2 / k ≈ 1.4 × 10³² kelvin

where:

c is the speed of light in a vacuum

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

G is the gravitational constant

k is the Boltzmann constant

See also

• Natural units
• Planck's constant
• Planck length
• Planck mass
• Planck time