What is Infrared Radiation & Electromagnetic Spectrum? - [4]
Автор: Math and Science
Загружено: 2022-12-28
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In this lesson, you will learn what infrared radiation is, and how we can use it to visualize the heat signature of objects. We will discuss that infrared light is simply a part of the electromagnetic spectrum that we can't see with our eyes, because the photoreceptors in our eyes aren't receptive to the energy level of a photon in the infrared range. We will learn how William Herschel accidentally discovered infrared light by measuring the temperature of the different colors of sunlight after the light was split by a prism into the colors of the rainbow. Herschel found that the hottest part of the spectrum is actually outside the visible region, and we now call these infrared waves. We will also discuss blackbody radiation, and learn that all bodies at a given temperature emit radiation, including in the infrared.
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