CMB
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9.9
- noun
- Specialized
- Thus, the first direct observations of the CMB were nails in the coffin for the steady state theory.
- microwave background
- CMB background
- CMB model
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Watch on YouTubeThis gives rise to the so-called CMB dipole.
- This gives rise to the so-called CMB dipole.
- This is not about the CMB temperature itself, it's about the fluctuations.
- Well, that means that the CMB dipole is not kinematic in origin, right?
- And since then the universe became mainly transparent to cosmic microwave background or CMB photons.
- And that light over time has been stretched into the microwave wavelengths and that's why we call it the cosmic microwave background or the CMB.
- No, the CMB, OK, CMB is where the constant supply, we do get more photons.
Examples
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I'll refer to it as the CMB for Cosmic Microwave Background.
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This is not about the CMB temperature itself, it's about the fluctuations.
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And absolutely data in the CMB is a big part of that story.
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But why is the CMB interesting?
Academic text (2003) -
"Now the CMB is adding a wealth of information to this field."
Blog text (20) -
Any direction we travel, the CMB appears more energetic or blue shifted, while behind us it appears red shifted.
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This gives rise to the so-called CMB dipole.
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But it was the detailed mapping of the CMB that secured cosmology's place at the table of experimental science.
Academic text (2003) -
Until the CMB formed, photons continually scattered back and forth as they bounced off free electrons swimming in the cosmic soup.
Academic text (2005) -
The cosmic microwave background (CMB) provides crucial information about the early moments of the universe.
Synonyms
2
8.3
Faint microwaves left from the early universe that fill space
2
6.6
A weak glow of heat left from the Big Bang that fills the universe
2
9.9
Faint light left over from the early universe that fills the sky
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
CMB = cosmic + microwave + background (opaque) = C + M + B
The form 'CMB' is an initialism formed from the phrase 'Cosmic Microwave Background'; the letters do not transparently convey meaning unless the expansion is known.
Etymology
The word CMB is a short name made from Cosmic, Microwave, and Background, where Cosmic means 'of the universe', Microwave means 'low-energy radio waves', and Background means 'all around'. So, CMB means the faint, all-around glow of microwaves left from the early universe that we can still detect today.