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Meaning of Planck relic | Babel Free

Noun CEFR B2

Definitions

A black hole with an event horizon on the order of a Planck length (~ 10⁻³⁵ metres), and a mass on the order of a Planck mass (~ 20 micrograms).

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
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See also

Planck scale Planck speed Planck star Planck temperature Planck time Planck unit

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