Planck time

physics

Also known as: Planck era

Learn about this topic in these articles:

big-bang model
- In big-bang model
  …a certain epoch called the Planck time. Scientists have yet to determine what prevailed before Planck time.
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cosmology and string theory
- In cosmology: Superunification and the Planck era
  This time, called the Planck time (Gh/c⁵)^1/2, equals approximately 10⁻⁴³ second. At the Planck time, the mass density of the universe is thought to approach the Planck density, c⁵/hG², roughly 10⁹³ grams per cubic centimetre. Contained within a Planck volume is a Planck mass (
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