Planck time

A time equal to 5.4 × 10^–44 second, and defined as √(hG /2πc ⁵); h is the Planck constant, G the gravitational constant, and c the speed of light. The uncertainty principle of quantum mechanics prevents any speculation on times shorter than the Planck time after the Big Bang.

Planck time

[′pläŋk ‚tīm] (physics) The constant (Gh /2π c ⁵)^1/2with dimensions of “time” formed from Planck's constant h, the gravitational constant G, and the speed of light c ; approximately 10^-43 second.

单词	planck time
释义	Planck time Planck time A time equal to 5.4 × 10^–44 second, and defined as √(hG /2πc ⁵); h is the Planck constant, G the gravitational constant, and c the speed of light. The uncertainty principle of quantum mechanics prevents any speculation on times shorter than the Planck time after the Big Bang. Planck time [′pläŋk ‚tīm] (physics) The constant (Gh /2π c ⁵)^1/2with dimensions of “time” formed from Planck's constant h, the gravitational constant G, and the speed of light c ; approximately 10^-43 second.
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