near-infrared
Just beyond red
Near-infrared refers to the portion of the electromagnetic spectrum just beyond visible red light, with wavelengths roughly between 700 and 2500 nanometers.
It's invisible to human eyes but detected by specialized sensors.
Near-infrared imaging has applications in night vision, medical diagnostics, and remote sensing: Near-infrared spectroscopy can measure blood oxygen levels through the skin.
Process of taking in
- reflectanceLight return ratio
- wavelengthSpatial repetition interval
- spectrometerMeasures electromagnetic radiation properties
- spectralGhostlike or wavelength-related
analysis · detection · measurement · transmittance · diffuse · absorbance · calibration · quantitative
Light-carrying cable technology
- wavelengthSpatial repetition interval
- bandwidthData transmission capacity
- transmissionSending of information
- signalMessage-conveying cue
laser · diode · photonics · multiplexing · attenuation · amplifier · silica · communication
Heat-based diagnostic scanning
- cameraImage capturing device
- sensorInput-detecting device
- surveillanceSystematic observation of subjects
- hyperspectralImaging beyond visible spectrum
multispectral · satellite · vegetation · mapping · thermal · detection · monitoring · photography
Instrument magnifying faraway objects
- JWSTInfrared space observatory
- redshiftWavelength stretch from recession
- stellarOf or like celestial bodies
- galaxyGravitationally bound stellar mass
nebula · dust · observation · detector · photometry · survey · sky · cosmic
Blood oxygen level measurement
- pulseArterial blood throb
- hemoglobinErythrocyte's oxygen-binding protein
- oxygenationAdding breathable gas
- tissueDisposable soft paper
cerebral · perfusion · monitoring · brain · muscle · vascular · diagnostic · noninvasive
absorption
Process of taking in
- reflectanceLight return ratio
- wavelengthSpatial repetition interval
- spectrometerMeasures electromagnetic radiation properties
spectral · analysis · detection · measurement · transmittance · diffuse · absorbance · calibration · quantitative · molecular
fiber-optic
Light-carrying cable technology
- wavelengthSpatial repetition interval
- bandwidthData transmission capacity
- transmissionSending of information
signal · laser · diode · photonics · multiplexing · attenuation · amplifier · silica · communication · data
thermography
Heat-based diagnostic scanning
- cameraImage capturing device
- sensorInput-detecting device
- surveillanceSystematic observation of subjects
hyperspectral · multispectral · satellite · vegetation · mapping · thermal · detection · monitoring · photography · CMOS
telescope
Instrument magnifying faraway objects
- JWSTInfrared space observatory
- redshiftWavelength stretch from recession
- stellarOf or like celestial bodies
galaxy · nebula · dust · observation · detector · photometry · survey · sky · cosmic · emission
oximetry
Blood oxygen level measurement
- pulseArterial blood throb
- hemoglobinErythrocyte's oxygen-binding protein
- oxygenationAdding breathable gas
tissue · cerebral · perfusion · monitoring · brain · muscle · vascular · diagnostic · noninvasive · laser
- infraredthermal imaging, thermal cameras
- light therapyphototherapy, light box, light therapy, red light therapy, photobiomodulation
- remote sensingsatellite imagery, aerial photography, LIDAR, LiDAR, radar imaging
- spectroscopyspectrum, spectrometer, spectroscope, spectrograph, spectrogram
- spectral imaginghyperspectral, multispectral, spectral analysis, hypercube, ultraviolet imaging
near-infraredfar-infrared
Longest heat wavelengths
ultraviolet · X-ray · gamma ray · visible light · radio waves