CBR
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9.9
- noun
- Specialized
:
radiación cósmica de fondo
- At that Big Bang moment, the temperature in that initial plasma mass was nearly 11 trillion degrees, and the frequency of what is now CBR corresponded.
Examples
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As the universe cooled and expanded, space stretched, and with it, the wavelength of the CBR.
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The Earth is moving with respect to the CBR (cosmic background radiation) at a speed of 390 kilometers per second.
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The stretching of space and time as the universe expanded in turn stretched the distance between the wave crests of the CBR.
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This light source was found in 1964 by accident when two astronomers discovered what's called cosmic background radiation, or CBR.
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With every doubling in the size of the universe from the instant of the Big Bang until the time of Adam, the stretching of the wavelength of the CBR reflects a slowing of the passage of time by one-half.
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The CBR provides crucial evidence for the Big Bang theory and the early universe.
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Scientists study the CBR to learn about the conditions of the universe shortly after its formation.
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The temperature of the CBR is measured to be about 2.7 kelvin, indicating the remnant heat from the early universe.
Synonyms
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9.9
Faint light from the early universe that we see across the sky at a very low temperature
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8.3
Faint microwaves left from the early universe that fill space
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6.6
A weak glow of heat left from the Big Bang that fills the universe
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7.7
A faint microwave glow left from the early universe that fills space nearly evenly
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9.2
A faint, very old light left from the Big Bang that fills the universe
Surface Forms
Etymology
The word CBR stands for the three words cosmic ('of the universe'), background ('a steady glow behind everything'), and radiation ('energy like light'). It is like a faint 'afterglow' left from the early universe, which is why scientists study it to learn how the universe began.