cosmic microwave background
2
8.3
- noun
- /ˈkɒzmɪk ˈmaɪkroʊweɪv ˈbækɡraʊnd/
- Specialized
:
fondo cósmico de microondas
- Through the study of the cosmic microwave background radiation, cosmologists have gained an excellent understanding of the state of the universe at that "recombination" time.
- cosmic microwave background radiation
- cosmic microwave background (CMB)
- cosmic microwave background anisotropy
Back at that time they didn't have a name like the Cosmic Microwave background.
- Back at that time they didn't have a name like the Cosmic Microwave background.
- So what you do is you create all the physics necessary to give you that cosmic microwave background.
- And since then the universe became mainly transparent to cosmic microwave background or CMB photons.
Examples
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To figure out how those systems arose, we probe the cosmic microwave background, a remarkable relic of the remote past.
Academic text (2003) -
And that's because the cosmic microwave background is polarized.
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And this is an all sky view, again, like the cosmic microwave background picture I showed you.
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We have the cosmic microwave background forcing you to be in this box here.
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A unique signature in the Cosmic Microwave Background radiation.
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If we were in rest with a cosmic microwave background, the energy in that radiation should be the same in all directions.
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So you could imagine those cosmic microwave background pictures that we've all seen.
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The simple discovery of the cosmic microwave background turned cosmology into something more than mythology.
Academic text (2003) -
And blue indicates absorption of the cosmic microwave background by the hydrogen.
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The cosmic microwave background provides evidence of the universe's early formation.
Synonyms
3
9.9
Faint light from the early universe that we see across the sky at a very low temperature
2
9.9
Faint light left over from the early universe that fills the sky
1
6.6
A weak glow of heat left from the Big Bang that fills the universe
1
7.7
A faint microwave glow left from the early universe that fills space nearly evenly
1
9.2
A faint, very old light left from the Big Bang that fills the universe
Surface Forms
Morphology
cosmic + microwave + background
The phrase is largely compositional: a B1 learner who knows 'cosmic' (relating to the universe), 'microwave' (a type of short radio wave), and 'background' (a pervasive or underlying layer) can infer it refers to pervasive microwaves in the universe. However, the specific scientific sense — faint relic radiation left over from the early universe and its cosmological significance — is specialized knowledge beyond basic compositional inference, so the meaning is only partially predictable.
Etymology
Cosmic microwave background comes from a simple image: after the Big Bang the very hot early universe left a faint glow of microwaves that now fills space. That's why the phrase means the 'leftover' radiation from the early universe.