infrared radiation
Học thuậtThân thiện
A scientist uses a thermal camera to detect infrared radiation from a cup of hot coffee.
Definition
- Noun:
- Electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves: A type of invisible energy wave, part of the electromagnetic spectrum, that is often perceived as heat.
Usage
- Infrared radiation is a scientific term used to describe a specific band of energy. It is commonly used in physics, astronomy, remote sensing, and technology contexts (e.g., thermal imaging, remote controls, and heat lamps).
- It is typically used as an uncountable noun.
Examples
- Noun:
- The Earth's surface absorbs sunlight and re-emits much of the energy as infrared radiation.
- Night-vision goggles detect infrared radiation to create an image in the dark.
- Many remote controls for electronic devices use pulses of infrared radiation to send signals.
Advanced Usage
- "Infrared" as an adjective: The word "infrared" is frequently used alone as an adjective to modify other nouns, describing something that uses, emits, or detects this type of radiation.
- The camera has an infrared sensor.
- We studied the star's infrared signature.
Variants and Related Words
- Infrared (adj.): Of, relating to, or using infrared radiation.
- infrared light, infrared photography, infrared spectrum
- IR: A common abbreviation for "infrared."
- Thermal radiation: A closely related term, as infrared radiation is a primary component of the thermal radiation emitted by objects due to their temperature.
Synonyms
- Infrared light: Often used interchangeably, though "light" in this context refers to the broader concept of electromagnetic radiation, not visible light.
- Infrared energy: Emphasizes the radiation as a form of energy.
- Radiant heat: Highlights the heating effect of this type of radiation.
Related Phrases and Compounds
- Infrared astronomy: The study of astronomical objects using infrared radiation.
- Infrared spectroscopy: An analytical technique that uses infrared radiation to identify materials.
- Far-infrared / Near-infrared: Subdivisions of the infrared spectrum based on wavelength.
A scientist uses a thermal camera to detect infrared radiation from a cup of hot coffee.
Noun
- electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves