microwave background: meaning, definition, pronunciation and examples
Low (Specialized)Formal, Academic, Technical
Quick answer
What does “microwave background” mean?
Faint electromagnetic radiation, a remnant from the early universe, detectable in the microwave range.
Audio
Pronunciation
Definition
Meaning and Definition
Faint electromagnetic radiation, a remnant from the early universe, detectable in the microwave range.
The cosmic microwave background (CMB), which is radiation left over from the Big Bang, provides crucial evidence for cosmological models and the universe's origin.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. The full term 'cosmic microwave background' is standard in both. Acronym 'CMB' is universally used.
Connotations
Identical technical connotations in both varieties.
Frequency
Equally rare outside technical contexts in both regions.
Grammar
How to Use “microwave background” in a Sentence
The [cosmic] microwave background [verb: reveals/shows/provides] evidence.Scientists study/map/analyse the microwave background.The microwave background is [adjective: uniform/isotropic/anisotropic].Vocabulary
Collocations
Examples
Examples of “microwave background” in a Sentence
verb
British English
- Scientists aim to microwave-background-map the entire sky with new satellites.
American English
- The team worked to microwave-background-map the early universe's structure.
adverb
British English
- The radiation was measured microwave-background-style.
American English
- The instrument scans microwave-background-like to detect faint signals.
adjective
British English
- The microwave-background data was crucial for the model.
- They discussed microwave-background physics.
American English
- The microwave-background signal is incredibly faint.
- This is a microwave-background research project.
Usage
Meaning in Context
Business
Not used.
Academic
Primary context. Used in physics, astronomy, and cosmology papers and lectures.
Everyday
Virtually never used. Might appear in popular science articles.
Technical
The core context. Essential terminology in astrophysics and related engineering fields (e.g., satellite telescope design).
Vocabulary
Synonyms of “microwave background”
Strong
Neutral
Weak
Vocabulary
Antonyms of “microwave background”
Watch out
Common Mistakes When Using “microwave background”
- Using 'microwave' without 'background' or 'cosmic' in scientific contexts, leading to ambiguity with the oven.
- Incorrectly pluralising as 'microwaves background'.
- Misspelling as 'micowave' or 'backround'.
FAQ
Frequently Asked Questions
Yes, in technical contexts they are synonymous. 'Cosmic microwave background (CMB)' is the full, precise term.
Because it is a pervasive, uniform signal that comes from all directions in space, forming a backdrop to all other astronomical sources.
No, it is not audible and its microwave wavelength is invisible to the human eye. It is detected using specialised radio telescopes and satellites.
Its discovery in 1965 provided strong, direct evidence for the Big Bang theory, favouring it over competing steady-state models of the universe.
Faint electromagnetic radiation, a remnant from the early universe, detectable in the microwave range.
Microwave background is usually formal, academic, technical in register.
Microwave background: in British English it is pronounced /ˌmaɪ.krə.weɪv ˈbæk.ɡraʊnd/, and in American English it is pronounced /ˈmaɪ.kroʊ.weɪv ˈbæk.ɡraʊnd/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “The echo of the Big Bang”
Learning
Memory Aids
Mnemonic
Imagine a very old, faint hum (background noise) coming from an ancient microwave oven left over from the universe's first moment.
Conceptual Metaphor
A FOSSILISED ECHO or a FADED IMAGE of creation.
Practice
Quiz
What does the 'microwave background' primarily refer to?