infrared spectrum
Thermal light range
The infrared spectrum is the range of electromagnetic radiation with wavelengths longer than visible light but shorter than microwaves.
Though invisible to human eyes, infrared radiation is felt as heat.
The term appears in contexts of thermal imaging, spectroscopy, and remote sensing: The telescope detects objects in the infrared spectrum that optical instruments miss.
- night visionAbility to see dimly
- thermal imagingDetecting objects by warmth
- thermal cameraDevice visualizing heat signatures
- heat signatureDetectable infrared emission pattern
- body heatThermal energy from metabolism
wavelength · frequency · greenhouse effect · photon · emission · energy level · electromagnetic wave · Planck's constant · remote sensing · medical imaging · laser communication · climate modeling · thermal radiation · absorption · heat dissipation · fiber optics · heat lamp · pyrometer
infrared spectrumultraviolet
Wavelengths shorter than violet
ultraviolet light · UV radiation · UV · X-rays · gamma rays
infrared, spectrum, infra, red, reddish, redden, redness, redder, reddest