-[INFRA-RED]-

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-as of [20 SEPTEMBER 2024]

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-‘infrared’ (IR) is an ‘invisible radiant energy’, ‘electromagnetic radiation’ with longer ‘wavelengths’ than those of ‘visible light’, extending from the ‘nominal red edge’ of the ‘visible spectrum’ at ‘700 nanometers’ (‘frequency’ – ‘430 THz’) to ‘1,000,000 nm’ (‘300 GHz’)-

(although people can see ‘infrared’ up to at least ‘1050 nm’ in ‘experiments’))

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(most of the ‘thermal radiation’ emitted by ‘objects’ near ‘room temperature’ is ‘infrared’)

(‘infrared radiation’ was discovered in ‘1800’ by astronomer ‘sir william herschel’, who discovered a type of ‘invisible radiation’ in the ‘spectrum’ lower in ‘energy’ than ‘red light’, by means of its effect on a ‘thermometer’)

(slightly more than ‘half’ of the ‘total energy’ from the ‘sun’ was eventually found to arrive on ‘earth’ in the form of ‘infrared’)

(the balance between ‘absorbed’ and ’emitted’ infrared radiation has a critical effect on earth’s ‘climate’)

(‘infrared energy’ is ’emitted’ or ‘absorbed’ by ‘molecules’ when they change their ‘rotational-vibrational movements’)

(‘infrared energy’ excites ‘vibrational modes’ in a ‘molecule’ through a change in the ‘dipole’ moment, making it a useful ‘frequency range’ for study of these ‘energy states’ for ‘molecules’ of the ‘proper symmetry’)

(‘Infrared spectroscopy’ examines ‘absorption’ and ‘transmission’ of ‘photons’ in the ‘infrared energy range’)

(‘infrared radiation’ is used in ‘industrial’, ‘scientific’, and ‘medical applications’)

(‘night-vision devices’ using ‘active near-infrared illumination’ allow ‘people’ or ‘animals’ to be observed without the ‘observer’ being ‘detected’)

(‘infrared astronomy’ uses ‘sensor-equipped telescopes’ to penetrate ‘dusty regions’ of ‘space’ such as ‘molecular clouds’, detect objects such as ‘planets’, and to view highly ‘red-shifted objects’ from the ‘early days’ of the ‘universe’)

(‘infrared thermal-imaging cameras’ are used to detect ‘heat loss’ in ‘insulated systems’, to observe changing ‘blood flow’ in the ‘skin’, and to detect ‘overheating’ of ‘electrical apparatuses’)

(‘thermal-infrared imaging’ is used extensively for ‘military’ and ‘civilian’ purposes)

(‘military applications’ include ‘target acquisition’, ‘surveillance’, ‘night vision’, ‘homing’, and ‘tracking’)

(‘humans’ at ‘normal body temperature’ radiate chiefly at ‘wavelengths’ around 10 μm (‘micrometers’))

(‘non-military uses’ include ‘thermal efficiency analysis’, ‘environmental monitoring’, ‘industrial facility inspections’, ‘remote temperature sensing’, ‘short-ranged wireless communication’, ‘spectroscopy’, and ‘weather forecasting’)

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*👨‍🔬🕵️‍♀️🙇‍♀️*SKETCHES*🙇‍♂️👩‍🔬🕵️‍♂️*

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📚📖|/\-*WIKI-LINK*-/\|📖📚

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👈👈👈☜*“NON-IONIZING RADIATION”* ☞ 👉👉👉

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*🌈✨ *TABLE OF CONTENTS* ✨🌷*

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🔥🔥🔥🔥🔥🔥*we won the war* 🔥🔥🔥🔥🔥🔥