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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.
10 de ago. de 2016 · 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.
Learn about infrared radiation, its wavelength, frequency, properties, and applications. Find out how infrared waves are classified, how they behave as waves and particles, and how they affect the Earth's climate.
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.
Infrared-light wavelengths are longer and more likely to slip between particles. In space, this allows infrared wavelengths to penetrate all but the densest regions of dust. By viewing infrared light, we can essentially look through cosmic clouds of gas and dust to the objects behind and within them.
27 de feb. de 2019 · IR frequencies range from about 300 gigahertz (GHz) up to about 400 terahertz (THz), and wavelengths are estimated to range between 1,000 micrometers (µm) and 760 nanometers (2.9921 inches),...
