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cosmic microwave background radiation

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Explanation of "Cosmic Microwave Background Radiation"

Definition:
"Cosmic microwave background radiation" (often shortened to CMB) is a scientific term that refers to a type of light that is found all over the universe. This light is a remnant from the hot beginning of the universe, known as the Big Bang, and it has cooled down over billions of years to an average temperature of about 2.725 Kelvin (which is very cold!).

Usage Instructions
  • Part of Speech: Noun
  • Context: This term is mainly used in the fields of cosmology (the study of the universe) and astrophysics (the study of space and the universe’s physical properties).
Example Sentences
  1. Scientists study cosmic microwave background radiation to learn more about the early universe.
  2. The discovery of cosmic microwave background radiation provided strong evidence for the Big Bang theory.
Advanced Usage

In advanced discussions, you might hear scientists talk about the fluctuations or patterns in the cosmic microwave background radiation, which can provide insights into the structure of the universe and its expansion.

Word Variants
  • CMB: The abbreviation used for "cosmic microwave background."
  • Cosmological: An adjective form that means related to cosmology.
Different Meanings
  • In everyday language, "cosmic" can refer to anything related to the universe or outer space.
  • "Microwave" typically refers to a type of electromagnetic radiation used in cooking or communication, but in this context, it describes the specific wavelengths of light.
Synonyms

There aren't direct synonyms for "cosmic microwave background radiation," but related terms include: - Cosmic background radiation: A more general term that can refer to various forms of radiation in the universe. - Relic radiation: Another term used to describe the leftover radiation from the Big Bang.

Idioms and Phrasal Verbs

This term does not have common idioms or phrasal verbs associated with it, as it is a highly specialized scientific term.

Summary

In summary, "cosmic microwave background radiation" is a crucial concept in understanding how our universe began and has evolved.

Noun
  1. (cosmology) the cooled remnant of the hot big bang that fills the entire universe and can be observed today with an average temperature of about 2.725 kelvin

Synonyms

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