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- Infrared abstract "Infrared (IR) refers to electromagnetic radiation with longer wavelengths than those of visible light, extending from the nominal red edge of the visible spectrum at 700 nanometers (nm) to 1 mm. This range of wavelengths corresponds to a frequency range of approximately 430 THz down to 300 GHz. Most of the thermal radiation emitted by objects near room temperature is infrared.Infrared radiation was discovered in 1800 by astronomer William Herschel, who discovered a type of invisible radiation in the spectrum beyond red light, by means of its effect upon 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 elicits 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 apparatus.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.".
- Infrared thumbnail Ir_girl.png?width=300.
- Infrared wikiPageExternalLink 08733349.pdf.
- Infrared wikiPageExternalLink infrared.html.
- Infrared wikiPageExternalLink www.irda.org.
- Infrared wikiPageExternalLink usb_ir_receiver.html.
- Infrared wikiPageExternalLink historical1.html.
- Infrared wikiPageExternalLink Cat%C3%A9gorie:Library.
- Infrared wikiPageExternalLink sirc-part-i-basics.html.
- Infrared wikiPageID "15022".
- Infrared wikiPageRevisionID "606518455".
- Infrared commons "Category:Infrared".
- Infrared date "November 2013".
- Infrared hasPhotoCollection Infrared.
- Infrared q "no".
- Infrared reason "what property of the emission will differ between the two? Wavelength or intensity?".
- Infrared wikt "infrared".
- Infrared subject Category:Electromagnetic_spectrum.
- Infrared subject Category:Infrared.
- Infrared comment "Infrared (IR) refers to electromagnetic radiation with longer wavelengths than those of visible light, extending from the nominal red edge of the visible spectrum at 700 nanometers (nm) to 1 mm. This range of wavelengths corresponds to a frequency range of approximately 430 THz down to 300 GHz.".
- Infrared label "Infrared".
- Infrared label "Infrarood".
- Infrared label "Infrarotstrahlung".
- Infrared label "Infrarouge".
- Infrared label "Podczerwień".
- Infrared label "Radiación infrarroja".
- Infrared label "Radiazione infrarossa".
- Infrared label "Radiação infravermelha".
- Infrared label "Инфракрасное излучение".
- Infrared label "أشعة تحت الحمراء".
- Infrared label "红外线".
- Infrared label "赤外線".
- Infrared sameAs Infračervené_záření.
- Infrared sameAs Infrarotstrahlung.
- Infrared sameAs Υπέρυθρη_ακτινοβολία.
- Infrared sameAs Radiación_infrarroja.
- Infrared sameAs Infragorri.
- Infrared sameAs Infrarouge.
- Infrared sameAs Inframerah.
- Infrared sameAs Radiazione_infrarossa.
- Infrared sameAs 赤外線.
- Infrared sameAs 적외선.
- Infrared sameAs Infrarood.
- Infrared sameAs Podczerwień.
- Infrared sameAs Radiação_infravermelha.
- Infrared sameAs m.03wbm.
- Infrared sameAs Q11388.
- Infrared sameAs Q11388.
- Infrared wasDerivedFrom Infrared?oldid=606518455.
- Infrared depiction Ir_girl.png.
- Infrared isPrimaryTopicOf Infrared.
