Infrared - Wikipedia
网页Infrared (IR; sometimes called infrared light) is electromagnetic radiation (EMR) with wavelengths longer than that of visible light but shorter than microwaves. The infrared spectral band begins with waves that are just longer than those of red light (the longest waves in the visible spectrum), so IR is invisible to the human eye.
Infrared Waves - NASA Science
网页2016年8月10日 · Infrared waves, or infrared light, are part of the electromagnetic spectrum. People encounter Infrared waves every day; the human eye cannot see it, but humans can detect it as heat. A remote control uses light waves just beyond the visible spectrum of light—infrared light waves—to change channels on your TV.
Infrared radiation | Definition, Wavelengths, & Facts | Britannica
网页4 天之前 · Infrared radiation, that portion of the electromagnetic spectrum that extends from the long wavelength, or red, end of the visible-light range to the microwave range. Invisible to the eye, it can be detected as a sensation of warmth on the skin.
What Is Infrared Light? Definition & Top Uses - Optics Mag
网页2024年3月14日 · Infrared is a form of light that is just beyond the red end of the visible light spectrum. It is invisible to the human eye but is emitted by all objects. Using sensors and receivers, it is possible to view the infrared emitted by different objects, making it useful for night vision and in fields such as astronomy.
What Is Infrared Radiation (IR(? Wavelength, Frequency, Uses, FAQs - BYJU'S
网页Infrared radiation (IR), sometimes known as infrared light, is electromagnetic radiation (EMR) with wavelengths longer than those of visible light. Hence, it is undetectable by the human eye, although IR of wavelengths up to 1050 nanometers (nm) from specially pulsed lasers can be seen by humans under certain conditions.
What Is Infrared? - Live Science
网页2019年2月27日 · IR is a type of electromagnetic radiation, a continuum of frequencies produced when atoms absorb and then release energy. From highest to lowest frequency, electromagnetic radiation includes gamma...
Infrared Radiation | Definition, Uses & Examples - Study.com
网页2023年11月21日 · Uses of Infrared Technology Radiation. One of the most common uses of infrared radiation is in heat-sensitive thermal imaging cameras.
What is Infrared? - Cool Cosmos
网页2013年8月16日 · Infrared is a form of light... light that we can not see with our eyes, but that we can sometimes feel on our skin as heat. When we think of light, we may imagine the glare of the Sun on a summer day, or the soft glow of a light bulb at night.
What Is Infrared Radiation? Science-Based Facts & FAQ
网页2024年3月14日 · Where Is It Used? Infrared radiation is used in a variety of ways, but the most common is heat-sensitive thermal imaging cameras. These are used in night-vision cameras or to sense human and animal body heat patterns, as well as for military use.
Infrared Radiation - an overview | ScienceDirect Topics
网页Infrared light is an electromagnetic radiation between microwave and visible light, with a wavelength of 0.78 ∼ 1000 μm, including near-infrared (NIR, 0.78 ∼ 1.4 μm), short-wavelength infrared (SWIR, 1.4 ∼ 3.0 μm), mid-wavelength infrared (MWIR, 3.0 ∼ 8.0 μm), and long-wavelength infrared (LWIR, 8.0 ∼ 15.0 μm) [1,2].
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