radio emission
1
5.2
- noun
- /ˈreɪdioʊ ɪˈmɪʃən/
- Specialized
:
emisión de radio
- As the beam sweeps past the Earth, radio astronomers observe a "pulse" of radio emission, hence the name pulsars.
- pulsed radio emission
- detect radio emissions
- map of radio emission
Examples
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Most radio emission is unpolarized; the electromagnetic waves arrive without their electric and magnetic components having any preferred direction.
Academic text (1996) -
One of the primary sources of cosmic radio emission is electrons.
Academic text (1996) -
Again, from looking at the radio emission, they were able to measure how the orbit of those stars was changing.
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The skies seemed filled with patches of radio emission, but it was not possible to identify what they were.
Academic text (1991) -
The radio emission of the Sun also increases at the time of a solar flare.
Academic text (1991) -
A bright, compact source detected by its radio emission is shown by the small ellipse at the center of the image.
Academic text (1992) -
In addition, the X-rays are higher in energy when the pulsed radio emission is at a maximum.
Academic text (1992) -
Outside this area, the interferometer cannot produce high-quality images of the radio emission.
Academic text (1996) -
The radio emission from a typical galaxy 10 megaparsecs away is 500 millijanskys; a Galactic supernova remnant, 2,300 janskys.
Academic text (1996) -
The scientist detected a strong radio emission from the distant galaxy using advanced telescopes.
Synonyms
26
2.7
A wave used to send or receive information through the air
19
3.2
A wave of invisible energy that sends signals to radios and phones
1
4.6
A radio wave used for wireless signals or medical treatment
Waves that carry sound and pictures through the air, like radio and TV signals
How Bright
Surface Forms
Morphology
The phrase is compositional: 'radio' (relating to radio waves or radio technology) modifies 'emission' (a release), so a learner who knows both words can infer it means the release/production of radio waves or radiation. This is a regular attributive noun + noun construction found across languages and is therefore transparently interpretable by learners, despite being somewhat technical.
Etymology
The noun radio emission combines radio (a word that originally meant 'ray' or 'to send out') and emission ('sending out'). Picture an object making invisible ripples or rays into space; those ripples are the 'radio emission' scientists detect, so the phrase means 'radio waves sent out by an object'.