infrared light
5
4.0
- noun
- /ˌɪnfrəˈrɛd laɪt/
- Specialized
:
luz infrarroja
- Second, the PPG measures the amount of red blood cells directly by the use of reflected infrared light.
- visible and infrared light
- wavelength of infrared light
- infrared light source
And therefore it emits mostly infrared light.
- And therefore it emits mostly infrared light.
- Real gold, because it's just somehow the ideal material for reflecting infrared light.
- It almost looks HD, but with night vision, you can pick up infrared light that you can't with the naked eye.
- My question for you is, will this splotch of paint be brighter, darker or the same brightness in infrared light as this hot object?
- The transmitter is actually projecting some very high energy infrared light and the receiver is basically like a solar panel.
- And when I say light, I mean every possible form of light from gamma rays, X-rays, infrared light that we think of as heat, radio waves.
- No, no Thunderbolt, but it does have infrared light.
- She is the co-owner of Sunlight, which is a global leader in infrared light therapy and saunas.
- They don't give out much light, no visible light, just a bit of kind of warm, warm infrared light and and they're very tiny.
- We'll talk about infrared light therapy, cold plunging, micro plastics, and how to heal numerous conditions on the show.
Examples
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All right, so we are seeing infrared light from galaxies in the early universe.
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LED light comes in a vast spectrum of wavelengths, and infrared light lies just beyond the visible colors.
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A good source of infrared light is required.
Academic text (2008) -
Infrared light does not quite focus in the same place as visible light.
Academic text (2008) -
We don't see infrared light, but we do feel it as heat.
Academic text (2008) -
Tim faced a vast open room, bathed in deep infrared light.
Fiction book (1990) -
As sunlight warms Earth's surface, Earth radiates the energy back toward space as infrared light.
Academic text (2008) -
Water and carbon dioxide molecules in the atmosphere absorb terrestrial infrared light, warming our planet's surface through the greenhouse effect.
Academic text (2004) -
Unfortunately, water vapor in Earth's atmosphere absorbs infrared light, keeping most of it from reaching even the tops of mountains.
Academic text (2002) -
The remote control emits a beam of infrared light to communicate with the television.
Synonyms
5
4.8
Light with waves longer than red light that you cannot see but feel as heat
4
4.2
A type of light we cannot see that warm things give off
1
4.4
A type of light you cannot see that makes things warm
Invisible light that warm things give off
Range of light waves longer than visible light that we feel as heat
How Short
- Specialized
10
3.4
- Specialized
1
8.1
- Specialized
5
4.0
- Specialized
Surface Forms
Morphology
The phrase 'infrared light' is directly compositional: 'infrared' specifies a part of the spectrum and 'light' names electromagnetic radiation, so their combination straightforwardly denotes radiation in the infrared range. This adjective+noun pattern is regular and cross-linguistically common, so a B1 learner who knows both constituents will readily understand the meaning.
Etymology
Infrared light comes from the parts infra and red, and it literally means 'below red', so it describes light just below the red color we can see. This light we cannot see with our eyes but we can feel as warmth and use in night cameras and remote controls, so the name fits its modern use.