Infrared
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Infrared (IR) light is electromagnetic radiation with a wavelength longer than that of visible light, measured from the nominal edge of visible red light at 0.74 micrometres (µm), and extending conventionally to 300 µm. These wavelengths correspond to a frequency range of approximately 1 to 400 THz, and include most of the thermal radiation emitted by objects near room temperature. Microscopically, IR light is typically emitted or absorbed by molecules when they change their rotational-vibrational movements.
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See also
- Atmospheric window
- Black body radiation
- Hyperspectral imaging
- Infrared astronomy
- Infrared camera
- Infrared filter
- Infrared homing
- Infrared photography
- Infrared signature
- Infrared solar cells
- Infrared spectroscopy
- Infrared thermometer
- Night vision
- People counter
- Photodiode
- Pyrgeometer
- Queue Management System
- RIAS (Remote Infrared Audible Signage)
- Terahertz radiation
- Thermographic camera
- Thermography
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