Long-wave Infrared Radiation
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PHYSICS
Electromagnetic Spectrum
Long-wave Infrared Radiation
Long-wave infrared reveals the invisible heat signatures emitted by everyday objects
2 Feb 2026
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Why is long-wave infrared radiation particularly useful for thermal imaging applications?
Because it is part of the solar spectrum and reflects strongly off surfaces, enhancing visible details.
Because it has shorter wavelengths than visible light, allowing it to capture fine surface textures.
Because it corresponds to the black-body radiation emitted by objects at typical Earth temperatures, revealing their heat signatures.
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