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
Infrared radiation | Definition, Wavelengths, & Facts | Britannica
网页3 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? - Live Science
网页2019年2月27日 · Infrared radiation (IR), or infrared light, is a type of radiant energy that's invisible to human eyes but that we can feel as heat. All objects in the universe emit some level of IR radiation,...
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.
Infrared Waves - NASA Science
网页2016年8月10日 · Infrared waves have longer wavelengths than visible light and can pass through dense regions of gas and dust in space with less scattering and absorption. Thus, infrared energy can also reveal objects in the universe that cannot be seen in visible light using optical telescopes.
Science In A Minute: What is Infrared Light? - YouTube
网页What is infrared light and how do we use it to study the universe? Infrared radiation, or infrared light, is a type of energy that we humans can't see but ca...
What Is Infrared Light? Definition & Top Uses - Optics Mag
网页2024年3月14日 · Infrared is a type of energy on the electromagnetic spectrum. Invisible to the human eye, infrared energy is given off by all heat sources. Discovered in 1800 by William Herschel, infrared can be detected using instruments like night-vision goggles and infrared cameras.
NASA | Exploring Energy: Infrared - YouTube
网页This video explores what infrared energy is and how NASA detects it to study our Earth's systems more completely.
What Is Infrared Radiation? Science-Based Facts & FAQ
网页2024年3月14日 · Infrared radiation, or infrared light, is a type of radiant energy invisible to the human eye. Keep reading as we explore what infrared radiation is and how it works...
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.
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