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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. IR is generally understood to include wavelengths from around 750 nm to 1 mm ( frequencies of 400 THz to 300 GHz ).
17 de may. de 2024 · Infrared radiation is the portion of the electromagnetic spectrum that extends from the red end of visible light to microwaves. It can be divided into three regions: near, middle, and far infrared, with different wavelengths and applications.
Learn about infrared waves, part of the electromagnetic spectrum that humans can detect as heat. Find out how infrared waves are used for thermal imaging, astronomy, and monitoring the Earth.
Infrared light is invisible light with wavelengths longer than 700–800 nm, the upper limit of the visible range. It is also called heat radiation, and can be generated by lasers, LEDs, thermal emitters or nonlinear frequency conversion.
16 de ago. de 2013 · Learn about infrared light, a form of light that we can not see but that we can feel as heat. Find out how infrared light relates to temperature, frequency, wavelength, and the electromagnetic spectrum.
Infrared radiation has wavelengths from 780 nm to 1,000,000 nm (or 1 mm), longer than those of visible light. We sometimes think of infrared radiation from the Sun as heat, but infrared radiation is not quite the same thing as heat. In fact, infrared radiation may not always feel warm.
Learn about infrared radiation (IR), a band of electromagnetic radiation with wavelengths above red visible light between 780 nm and 1 mm. Find out the natural and artificial sources of IR, the effects of IR on the body and health, and the protection recommendations for exposure.
