Infrared may mean The infrared range of light. Infrared spectroscopy subset of spectroscopy Infrared record label , a UK based record label. Infra Red song , a song by the band Placebo band Placebo . Disambig ... more details
Other uses pp move vandalism small yes File Ir girl.png thumb right An image of two people in mid infrared thermal light false color File Wide field Infrared Survey Explorer first light image.jpg thumb right This infrared space telescope image has blue, green and red corresponding to 3.4, 4.6, and 12 micron wavelengths respectively. Infrared IR light is electromagnetic radiation with longer wavelength ... near room temperature. Infrared light is emitted or absorbed by molecules when they change their Infrared ... in the form of infrared radiation. Sunlight at zenith provides an irradiance of just over 1 kilo kilo watt per square meter at sea level. Of this energy, 527 watts is infrared radiation, 445 ... ref The balance between absorbed and emitted infrared radiation has a critical effect on the Earth s climate. Infrared light is used in industrial, scientific, and medical applications. Night vision devices using infrared illumination allow people or animals to be observed without the observer being detected. In astronomy, imaging at infrared wavelengths allows observation of objects obscured by interstellar dust. Infrared imaging cameras are used to detect heat loss in insulated systems, observe ... 405 THz 1.7 eV 3.3 eV style background FFE8E8 Infrared 750 nm 1 mm 405 THz 300 GHz 1.24 ... 3 Hz 1.24 meV 12.4 Femto f eV Infrared imaging is used extensively for military and civilian purposes ... forecasting . Infrared astronomy uses sensor equipped telescopes to penetrate dusty regions ... www.ipac.caltech.edu Outreach Edu importance.html title IR Astronomy Overview publisher NASA Infrared ... ic level, infrared energy elicits vibration al modes in a molecule through a change in the Molecular ... for molecules of the proper symmetry. Infrared spectroscopy examines absorption and transmission of photon s in the infrared energy range, based on their frequency and intensity. ref cite web last Reusch first William year 1999 url http www.cem.msu.edu reusch VirtualText Spectrpy InfraRed infrared.htm ... more details
Infrared Mammography is a specific form of breast thermography. The term was trademarked in 2011 by Infrared Medical Solutions and refers to the methods and standards used by Dr. Philip Hoekstra to perform breast thermography. Category Infrared imaging ... more details
Infrared lamps are electrical devices which emit infrared radiation. Infrared lamps have many uses, but are most commonly used in communication and heating . Less common uses include illumination for use with night vision device s. Heating main Infrared heater Radiant heating Infrared heating uses infrared lamps, commonly called heat lamps to transmit infrared radiation to the body that is being heated. When large bodies or bodies with a large surface area need to be heated, infrared lamps are often used in banks. Infrared heat lamps are commonly incandescent bulbs which are able to produce infrared radiation. Infrared lamps have many industrial applications including curing coatings and preparing plastic for forming, commercial applications such as cooking and browning food, and personal applications such as providing heat especially in bathrooms and for pets . Communication Image Blue infrared light.jpg thumb 300px right Infrared light from the LED of a remote control as seen by a digital camera. IR data transmission is also employed in short range communication among computer peripherals and personal digital assistant s. These devices usually conform to standards published by Infrared Data Association IrDA , the Infrared Data Association. Remote controls and IrDA devices use infrared light emitting diode s LEDs to emit infrared radiation which is focused by a plastic Lens optics lens into a narrow beam. The beam is modulation modulated , i.e. switched on and off, to encode the data . The receiver uses a silicon photodiode to convert the infrared radiation to an electric Current electricity current . It responds only to the rapidly pulsing signal created by the transmitter, and filters out slowly changing infrared radiation from ambient light. Infrared communications are useful ... not interfere with other devices in adjoining rooms. Infrared is the most common way for remote control s to command appliances. See also Infrared Applications Infrared communications applications Category ... more details
Infrared cirrus are filamentary structures seen in infrared light. The name is given because the structure looks cloud like in appearance. First detected by the IRAS Infrared Astronomy Satellite at wavelengths of 60 and 100 micrometres. See also Cosmic infrared background radiation External links http arxiv.org abs astro ph 0507587 Molecular Hydrogen in Infrared Cirrus , Kristen Gillmon, J. Michael Shull, 2006 Abstract http arxiv.org pdf astro ph 0507587 PDF Paper http www.sofia.usra.edu Science science cases dowell v2.pdf The Physics of Infrared Cirrus , C. Darren Dowell, Roger H. Hildebrand, Alex Lazarian, Michael W. Werner, Ellen Zweibel DEFAULTSORT Infrared Cirrus Category Interstellar media astronomy stub de Infrarot Cirrus fr Cirrus infrarouge zh ... more details
File WyomingInfraRedObservatory.jpg thumb right 200px Wyoming Infrared Observatory File SOFIA with open telescope doors.jpg thumb right 200px SOFIA is an infrared telescope in an aircraft, allowing high altitude observations An infrared telescope is a telescope that uses infrared light to detect celestial bodies. Infrared light is one of several types of radiation present in the electromagnetic spectrum ... visible light optical , as well as infrared telescopes. Discoveries Leading to the Invention of the Infrared Telescope In 1800, William Herschel discovered infrared radiation. In 1878, Samuel Pierpoint ... detect incredibly small changes in temperature in the infrared spectrum. In the 1950s, scientists used lead sulfide detectors to detect the infrared radiation from space. These detectors were cooled with liquid nitrogen . Between 1959 and 1961, Harold Johnson created near infrared photometer s which ... bolometer. This invention, cooled by liquid helium , led the way for current infrared telescope development. http www.ipac.caltech.edu Outreach Edu Timeline timeline2.html The three different types of infrared ... types of telescopes contain an infrared camera that must be cooled to hundreds of degrees below zero as well as a special solid state infrared detector. http coolcosmos.ipac.caltech.edu cosmic classroom ask astronomer faq obs.shtml Ground based telescopes were the first type of infrared telescopes ... have limitations because water vapor in the Earth s atmosphere absorbs infrared radiation. Ground based infrared telescopes tend to be placed on high mountains and in very dry climates to improve visibility. In the 1960s, scientists used balloons to lift infrared telescopes to higher altitudes. With balloons, they were able to reach about 25 miles up. In 1967, infrared telescopes were placed ... borne infrared telescopes. A more recent air borne infrared telescope to reach the stratosphere was NASA s Stratospheric Observatory for Infrared Astronomy SOFIA in May 2010. Together, United States ... more details
The term infrared signature is used by Military science defense scientists and the military to describe the appearance of objects to infrared sensors . An infrared signature depends on many factors, including ... estimation of solid angle subtended by complex well resolved surfaces for infrared detection ..., Gaitonde, U.N., & Marathe A.G. 2001 Numerical studies of infrared signature levels of complete aircraft ..., & Rao, G.A. 2009 Study of sunshine, skyshine, and earthshine for aircraft infrared detection, Journal ... infrared signatures , AIAA Journal of Aircraft , v. 42 4 , pp. 1046 1054. ref and the waveband of the detecting sensor. As such there is no all encompassing definition of infrared signature nor any trivial means of measuring it. For example the infrared signature of a truck viewed against a field will vary significantly with changing weather, time of day and engine loading. Infrared stealth is an area of stealth technology aimed at reducing infrared signatures. ref Mahulikar, S.P., Sonawane, H.R., & Rao, G.A. 2007 Infrared signature studies of aerospace vehicles , Progress in Aerospace Sciences , v. 43 7 8 , pp. 218 245. ref This reduces a platform s susceptibility to infrared guided weapons and infrared surveillance sensors, ref Rao, G.A., & Mahulikar, S.P. 2005 New criterion for aircraft susceptibility to infrared homing missiles , Aerospace Science & Technology , v. 9 8 , pp. 701 712. ref and thus increases the platform s overall survivability. Infrared stealth is particularly ..., S.P., Rao, G.A., Sane, S.K., & Marathe, A.G. 2005 Aircraft plume infrared signature in nonafterburning ..., S.K. 2008 Infrared signature suppression of helicopter engine duct based on conceal and camouflage ... soldiers. A military aim in studying infrared signatures is to understand the likely infrared signature of threats and develop the equipment required to detect them and to reduce the infrared ... with sensors to detect the exhaust plumes of incoming anti ship missile s while also having an infrared ... more details
File Carina Nebula in infrared light captured by the Hubble Space Telescope .jpg thumb 300px Carina Nebula in infrared light captured by the Hubble Space Telescope Hubble s Wide Field Camera 3. Infrared astronomy is the branch of astronomy and astrophysics that studies astronomical object s visible in infrared IR radiation. The wavelength of infrared light ranges from 0.75 to 300 micrometers. Infrared ... radiation submillimeter waves. Infrared astronomy began in the 1830s, a few decades after the discovery of infrared light by William Herschel in 1800. Early progress was limited, and it was not until ... and Moon were detected in infrared light. After a number of discoveries were made in the 1950s and 1960s ... wavelength range, and modern infrared astronomy was established. Infrared and optical astronomy are often ... effective over a wavelength range that includes both visible and infrared light. Both fields also use ... are different. Infrared light is absorption electromagnetic radiation absorb ed at many wavelengths by water vapor in the Earth s atmosphere , so most infrared telescopes are at high elevations in dry places, above as much of the atmosphere as possible. There are also infrared observatories in space ... with open telescope doors.jpg thumb right 200px SOFIA is an infrared telescope in an aircraft, shown here in a 2009 test The discovery of infrared radiation is attributed to William Herschel, who performed ... at infrared wavelengths was due to the spectral index of the prism rather than properties of the Sun ... bio.html title Herschel Discovers Infrared Light accessdate 2010 04 09 ref Efforts were made starting in the 1830s and continuing through the 19th century to detect infrared radiation from other astronomical ... . Ernest Fox Nichols used a modified Crookes radiometer in an attempt to detect infrared radiation ... credit for the first detection of a star other than our own in the infrared. ref name rieke cite journal author Rieke, George H. title History of infrared telescopes and astronomy journal Experimental ... more details
Top tree photographed in the near infrared range. Bottom same tree in the Visible spectrum ... Infrared image of the Mississippi River crossed by a bridge and a dam, between red foliage on left ... vs. Infrared 900nm LP Aerial Photography of Old Hickory Lake , Tennessee . Taken from a passenger airplane within seconds apart using SONY H 9 Digital camera. In infrared photography , the film or image sensor used is sensitive to infrared light. The part of the visible spectrum spectrum used is referred to as near infrared to distinguish it from far infrared, which is the domain of thermal .... Film is usually sensitive to visible light too, so an infrared passing filter is used this lets infrared ... thus looks black or deep red . Infrared filter may refer either to such a filter or to one that blocks infrared but passes other wavelengths. When these band pass filter filters are used together with infrared sensitive film or sensors, very interesting in camera effect s can be obtained false ... in infrared photographs. The effect is named after the infrared photography pioneer Robert W. Wood , and not after the material wood, which does not strongly reflect infrared. The other attributes of infrared ..., result in less infrared light in shadows and dark reflections of those skies from water, and clouds ... a milky look to portraits, although eyes often look black. History Until the early 20th century, infrared ... of Photography accessdate 2006 11 28 ref The first infrared photographs as distinct from spectrographs ... of this event in 2010. ref cite journal journal The RPS Journal title 100 Years of Infrared author ... work focused on landscapes. A further set of infrared landscapes taken by Wood in Italy in 1911 used plates provided for him by CEK Mees at Wratten & Wainwright. Mees also took a few infrared photographs in Portugal in 1910, which are now in the Kodak archives. Infrared sensitive photographic plates were developed in the United States during World War I for spectroscopic analysis, and infrared ... more details
Infrared vision can be defined as the capability of biological or artificial systems to detect infrared ... in this context since infrared emissions from a body are directly related to their temperature hotter objects emit more energy in the infrared spectrum than colder ones. The human body, as well as many ... environment. Since hotter objects emit more infrared energy than colder ones, it is relatively easy to identify them with an infrared detector , day or night. Hence, the term night vision is also used sometimes misused in the place of infrared vision , since one of the original purposes in developing ... . ref However, night vision concerns the ability to see in the dark although not necessarily in the infrared ... HowStuffWorks . ref light intensifiers or infrared vision. The former technology uses a photocathode to convert light in the visible or near infrared portions of the electromagnetic spectrum to electrons, amplify the signal and transform it back to photons. Infrared vision on the other hand, uses an infrared detector working at mid or long wavelengths invisible to the human eye to capture the heat emitted by an object. The infrared spectrum Image Infrared spectrum.gif thumb right 400px The infrared bands in the electromagnetic spectrum. The entire electromagnetic spectrum highlighting the infrared ... from one author to another, ref Hudson R. D. 1969, Infrared System Engineering , John Wiley & Sons Inc., USA. ref ref Piotrowski J. and Rogalski A. 2004, Uncooled Long Wavelength Infrared Photon Detectors , Infrared Phys. Technol., 46 115 131. ref ,. ref Rogalski A. and Chrzanowski K. 2002, Infrared .... 2004, Infrared Imaging and Open Heart Surgery, from InfraredThermography.com by Advanced Infrared ... of the atmospheric transmittance windows, i.e. the wavelengths regions in which infrared radiation is better transmitted through the atmosphere, the detector materials used to build the infrared sensors and the main applications. In this way, the Near Infrared NIR band is mostly used in fiber ... more details
An infrared heater is a body with a higher temperature which transfers energy to a body with a lower ... of the infrared radiation ranges from 780 nm to 1 mm. The relationship between ... the two bodies is needed for the energy transfer. One classification of infrared heaters is by the wavelength bands of infrared emission. Short wave or near infrared for the range from 780 nm ... infrared for the range between 1400 nm and 3000 nm Far infrared or dark emitters for everything above 3000 nm. File Carbon heater.jpg thumb right A household infrared electric heater Elements Infrared heaters use either a fuel to heat an emitter, or an electrically heated Electrical filament filament as the emitting body. An infrared lamp will protect the filament with a heat ... infrared heaters is tungsten wire, which is coiled to provide more surface area. Low temperature ... a comparable medium wave heater based on a FeCrAl filament. Industrial infrared heaters sometimes use a gold coating on the quartz tube that reflects the infrared radiation and directs it towards the product to be heated. Consequently the infrared radiation impinging on the product is virtually doubled ... 95 . Types Infrared heaters are commonly used in infrared modules or emitter banks combining several heaters to achieve larger heated areas. Infrared heaters are usually classified by the wavelength they emit. Near infrared NIR or short wave infrared heaters operate at high filament temperatures ... wave and carbon CIR infrared heaters operate at filament temperatures of around 1000 C. They reach maximum power densities of up to 60 kW m medium wave and 150 kW m CIR . Far infrared emitters FIR are typically used in the so called low temperature far infrared sauna s. These constitute only the higher and more expensive range of the market of infrared sauna. Instead of using carbon, quartz or high watt ceramic emitters, which emit near and medium infrared radiation, heat and light ... more details
Refimprove date January 2008 Infrared cleaning is a technique used by some film scanner s and flatbed scanner s to reduce or remove the effect of dust and scratches upon the finished image scanning scan . It works by collecting an additional infrared channel from the scan at the same position and resolution as the three visible colour channels red, green, and blue . This infrared channel can be used to automatically remove the appearance of dust and scratches in the visible channels and replace them by inpainting . Approaches Scanners use three different techniques for doing this Nikon film scanners ... infrared light source. At each scan position, the scanner uses an RGB linear array to scan the film in RGB and RGB Infrared. This is as fast as the Nikon approach, since only one physical pass over ..., an RGB light source and an infrared light source. These scanners make two passes over the film once for RGB and once for infrared. This is slower than the Nikon or Minolta approach, since two passes ... quality. Applicability The three color dyes in modern color film emulsions respond equally to infrared light, so the infrared image looks relatively opaque compared to the RGB image. Any dust spots or scratches appear as dark spots in infrared, making it easy to find and correct for these dust spots. Kodachrome film dyes are more sensitive to infrared than Ektachrome film dyes, making it more ... s ref http www.silverfast.com highlights isrd en.html ref , claim to use infrared cleaning to find dust spots even when scanning Kodachrome. Infrared cleaning doesn t work at all with silver halide ... particles respond equally in visible light and infrared light . History IBM originally developed and patented infrared cleaning, and subsequently licensed this patent to Applied Science Fiction ASF . Canon has a patent cross licensing agreement with IBM and was able to use the IBM s infrared cleaning ... developed infrared cleaning algorithms which are completely different from IBM s patented ... more details
Infobox Film see Template Infobox film name Infrared Sightings image GDInfraredSightingsVHS.jpg caption Infrared Sightings video tape cover director Len Dell Amico br Larry Lachman producer Len Dell Amico br Larry Lachman music Grateful Dead distributor Trigon Productions released 1992 runtime 18 minutes country United States language English Infrared Sightings is a video by the Grateful Dead , consisting of computer animation and other imagery set to music from their album Infrared Roses . It was released on VHS video tape and on laserdisc in 1992 in film 1992 , and is 18 minutes long. Infrared Roses is known to fans as the all Drums and Space album . Produced by Grateful Dead sound designer Bob Bralove, it contains free form musical improvisation improvisational music recorded live at a number of different Dead concerts. The visuals for Infrared Sightings combine computer generated images, many of them abstract art abstract , with found footage that has been altered or edited in various ways. The video is therefore somewhat reminiscent of the light shows that were projected on large screens at many Grateful Dead concerts. Infrared Sightings on Allmovie The Allmovie entry for Infrared Sightings http allmovie.com cg avg.dll?p avg&sql 1 178339 erroneously states that the video includes the songs Truckin , Playing in the Band , Not Fade Away song Not Fade Away , Sugar Magnolia , and Friend of the Devil . As explained above, the soundtrack of Infrared Sightings actually is made up of sections of different performances of the free form musical improvisation known as Drums and Space ... Highrise Table Top Stomp part 3 Yes I Kandinsky music Infrared Roses Credits Musicians Jerry Garcia ... movie 178339 http www.deaddisc.com vi Infrared.htm Infrared Sightings at the Grateful Dead Family Database http www.lddb.com laserdisc.php?id 4389 Infrared Sightings at LaserDisc Database Scott, John ... Clip from Infrared Sightings on FritzPerlberg.com Grateful Dead Category Grateful Dead Category ... more details
Cleanup date June 2011 unreferenced date December 2008 Infrared thermometers infer temperature using a portion of the thermal radiation sometimes called blackbody radiation emitted by the object of measurement. They are sometimes called laser thermometers if a laser is used to help aim the thermometer .... By knowing the amount of infrared energy emitted by the object and its emissivity , the object s temperature ... of the two possibilities. The most basic design consists of a lens to focus the infrared .... As such, the infrared thermometer is useful for measuring temperature under circumstances ... a significant temperature gradient on the object s surface. Infrared thermometers can be used ... varieties of infrared temperature sensing devices available today, including configurations designed ... to the surface, if the allowed measurement error is acceptable. The most common infrared thermometers are the Spot Infrared Thermometer or Infrared Pyrometer , which measures the temperature at a spot ..., although not strictly thermometers, includes Infrared Scanning Systems scan a larger area, typically ... exiting an oven, fabric and paper, or continuous piles of material along a conveyor belt. Infrared Thermal Imaging Cameras or Thermographic camera Infrared Cameras are essentially infrared radiation .... A photographic camera using infrared film and suitable lens, etc., is also called an infrared camera .... Image Infrared thermometer.JPG An IR thermometer in use in industry gallery External links Commons category Thermography http www.irinfo.org IRINFO.ORG The Definitive Online Resource for Infrared Thermography ... Introduction to Infrared Thermometers Omega http www.irapps.com Applications of Infrared Thermometers ... 1990s http www.tempsensornews.com News of infrared and thermal imaging products & services with dedicated RSS newsfeeds See also Infrared camera Thermography ASTM Subcommittee E20.02 on Radiation Thermometry Sakuma Hattori equation List of laser articles DEFAULTSORT Infrared Thermometer Category Thermometers ... more details
Refimprove date December 2007 Cleanup date December 2009 An infrared blaster or IR blaster is a device that emulates an infrared remote control to autonomously control a device that is normally controlled only by remote control key presses. The most common use of an IR blaster is to allow a recording device such as a digital video recorder DVR or video cassette recorder VCR to change the channel on an external tuner such as a cable box or satellite receiver. This way, the recording device can automatically select the correct channel to record before starting the recording process. Another common use is to extend infrared signals in order to place remote controlled products behind closed doors. gallery Image tivo irblaster small.jpg Example IR Blaster with standard 1 8 plug Image Ir blaster on cable box.jpg IR Blaster stuck to a cable tv tuner gallery References http www.mythtv.org wiki IR Blaster Using an IR Blaster with MythTV Unreferenced date March 2010 references Category Infrared technology tech stub ... more details
An infrared excess is a measurement of an astronomical source, typically a star , that has a greater measured infrared radiative flux flux than expected by assuming the star is a blackbody radiation blackbody radiator . Infrared excesses are often the result of circumstellar dust and are common in young stellar object s and evolved stars on the asymptotic giant branch or Post AGB older . References cite book last Evans first Aneurin title The Dusty Universe publisher Ellis Horwood date 1993 pages 155 165 Category Observational astronomy astronomy stub de Infrarotexzess lb Infraroutexzess sk Infra erven prebytok zh ... more details
An infrared countermeasure IRCM is a device designed to protect aircraft from infrared homing heat seeking missiles by confusing the missiles infrared guidance system so that they will miss their target ..., more portable, and more reliable, but the basic principle is the same. Infrared missile seeker technology see also Infrared homing Infrared missile seekers of the first generation typically used a spinning reticle with a pattern on it that modulates infrared energy before it falls on a detector ... is the same. By modulating the signal, the steering logic can tell where the infrared source ... 144 modulated IRCM jammer. Infrared seekers are designed to track a strong source of infrared radiation ... of infrared radiation with a higher intensity than the target. When this modulated radiation is seen ... lock. Once an infrared seeker breaks lock they typically have a field of view of 1 2 degrees , they rarely ... seeker to lock onto a new infrared source that is rapidly moving away from the true target. The modulated ... source of radiation DIRCM . ref http www.dtic.mil srch doc?collection t3&id ADA364021 The Infrared ... of standard IRCM systems is that they broadcast a bright source of infrared. If the modulation ... , or Directional Infrared Countermeasures, avoid this potential drawback by mounting the energy source ... Infrared Countermeasure MUSIC that will similarly use active laser s instead of flare countermeasure ... DoN LAIRCM by Northrop Grumman provides infrared threat protection for U.S. Marine Corps ... 196013 Northrop Grumman to Provide Infrared Missile Warning Systems and Processors to the U.S. Navy for Heavy Lift Helicopter Fleets ref BAE Systems AN ALQ 212 advanced threat infrared countermeasures ATIRCM part of a directable infrared countermeasures suite is fielded on U.S. Army CH 47 Chinook helicopters. The suite provides protection against an array of threats, including all infrared threat bands. The AN ALQ 212 incorporates one or more infrared jam heads to counter multiple missile attacks ... more details
refimprove date October 2009 File Infraszauna 001.jpg thumb The interior of an infrared sauna. An infrared sauna uses Infrared heater infrared heaters to emit infrared thermal radiation radiant heat which is absorbed directly into the human body, unlike traditional sauna s which heat the body indirectly via air or steam. Health benefit claims A study of patients with rheumatoid arthritis and ankylosing spondylitis showed a reduction in pain, stiffness and fatigue during infrared sauna therapy, but this could have been due only to chance i.e. not the sauna as these did not reach statistical significance. ref cite journal author Oosterveld FG, Rasker JJ, Floors M, et al. title Infrared sauna in patients with rheumatoid arthritis and ankylosing spondylitis. A pilot study showed good tolerance, short term improvement of pain and stiffness, and a trend towards long term beneficial effects journal Clin. Rheumatol. volume 28 issue 1 pages 29 34 year 2009 month January pmid 18685882 doi 10.1007 s10067 008 0977 y ref Another benefit claim is that since saunas increase perspiration, they purportedly liberate undisclosed toxins. Saunas have been recommended for this ostensible reason to people who are told they have high levels of toxicity in their body, although the supposed, offending toxins ... problems, such as Chronic Fatigue Syndrome . Only if the sauna uses far infrared technology, the sauna ... humid hot air saunas. This is because far infrared rays do not heat the air inside the sauna, but they still heat the body. However, most infrared saunas in the market do not use the expensive far infrared panels, which can be touched because they remain always cold, but much cheaper low and medium infrared heaters, which remain very hot when used and also heat the air of the sauna. Energy expenditure and weight loss Some infrared sauna proponents claim that the sauna is an effective method for considerably ... Infrared Sauna Category Bathing Category Light therapy cs Infrasauna de Infrarotw rmekabine ... more details
An infrared detector is a detector that reacts to infrared IR radiation . The two main types of detectors are thermal and photonic photodetector s . The thermal effects of the incident IR radiation can be followed through many temperature dependent phenomena. Bolometer s and microbolometer s are based on changes in resistance. Thermocouple s and thermopile s use the thermoelectric effect . Golay cells follow thermal expansion. In IR spectrometer s the pyroelectric detector s are the most widespread. The response time and sensitivity of photonic detectors can be much higher, but usually these have to be cooled to cut thermal noise . The materials in these are semiconductors with narrow band gaps. Incident IR photons can cause electronic excitations. In photoconductive detectors, the resistivity of the detector element is monitored. Photovoltaic detectors contain a p n junction on which photoelectric current appears upon illumination. A few detector materials Types type Spectral range m Wavenumber cm 1 Indium gallium arsenide InGaAs photodiode 0.7 2.6 14300 3800 Germanium photodiode 0.8 1.7 12500 5900 Lead sulfide PbS photoconductive 1 3.2 10000 3100 Lead selenide PbSe photoconductive 1.5 5.2 6700 1900 Indium antimonide InSb photoconductive 1 6.7 10000 1500 Indium arsenide InAs photovoltaic 1 3.8 10000 2600 Platinum silicide PtSi photovoltaic 1 5 10000 2000 Indium antimonide InSb photodiode 1 5.5 10000 1800 Mercury cadmium telluride MCT, HgCdTe photoconductive 0.8 25 12500 400 Mercury zinc telluride MZT, HgZnTe photoconductive Lithium tantalate LiTaO sub 3 sub pyroelectric triglycine sulfate TGS and DTGS pyroelectric The range of pyroelectric detector is determined by the window ... SSD Characteristics and use of infrared detectors.pdf Characteristics and Use of Infrared Detectors ... Advances Lead to Greater Variety of Infrared Detectors Hamamatsu Photonics Category Detectors Category Image sensors Category Infrared imaging fr D tecteur infrarouge ko it Rivelatore ad ... more details
For a table of IR spectroscopy data infrared spectroscopy correlation table Infrared spectroscopy IR spectroscopy is the spectroscopy that deals with the infrared region of the electromagnetic spectrum ... is a Fourier transform infrared spectroscopy Fourier transform infrared FTIR spectrometer . The infrared ... infrared, named for their relation to the visible spectrum. The higher energy near IR, approximately ... mathematics harmonic vibrations. The mid infrared, approximately 4000 400 cm sup 1 sup 2.5 ... vibrational structure. The far infrared, approximately 400 10 wavenumber cm sup 1 sup ... based on the relative molecular or electromagnetic properties. Theory Infrared spectroscopy exploits ... results in an unexpected shift in energy and intensity of the bands. Practical IR spectroscopy The infrared spectrum of a sample is recorded by passing a beam of infrared light through the sample. When ... of very complex mixtures. Spectra issues with infrared fluorescence are rare. Sample ... of the interest. A simple glass tube with length of 5 to 10 cm equipped with infrared windows ... the infrared light is guided with mirrors to travel through the gas. White s cells are available ... to the infrared light and do not introduce any lines onto the spectra. Solid samples can ... spectrometer. A beam of infrared light is produced, passed through an interferometer not shown , and then split ... of the light source drifts over time. To take the infrared spectrum of a sample, it is necessary ... for example, what light source is used, what infrared detector is used, etc. . The reference measurement ... is not perfectly reliable if the infrared lamp is a bit brighter during the reference measurement ... Main Fourier transform infrared spectroscopy File FTIR interferogram.svg thumb An interferogram from ... spectrum. Fourier transform infrared FTIR spectroscopy is a measurement technique that allows one to record infrared spectra. Infrared light is guided through an interferometer and then through the sample ... more details
In physics , an infrared divergence or infrared catastrophe is a situation in which an integral , for example a Feynman diagram , diverges because of contributions of objects with very small energy approaching zero, or, equivalently, because of physical phenomena at very long distances. The infrared IR divergence only appears in theories with massless particles such as photon s . They represent a legitimate effect that a complete theory often implies. One way to deal with it is to impose an infrared cutoff and take the limit as the cutoff approaches zero and or refine the question. Another way is to assign the massless particle a fictitious mass, and then take the limit as the fictitious mass vanishes. The divergence is usually in terms of particle number and not empirically troubling, in that all measurable quantities remain finite. ref name Kaku ref name IZ Unlike in the case of the UV catastrophe where the energies involve diverge. Bremsstrahlung example When an electric charge is accelerated or de accelerated it emits Bremsstrahlung radiation . Semiclassical electromagnetic theory , or the full quantum electrodynamic analysis, shows that an infinite number of soft photons are created. But only a finite number are detectable, the remainder, due to their low energy, falling below any finite energy detection threshold, which must necessarily exist. ref name Kaku cite book last Kaku first Michio title Quantum Field Theory A Modern Introduction year 1993 location New York publisher Oxford University Press isbn 0195076524 , pages 177 184 and appendix A6 ref However even though most of the photons are not detectable they can t be ignored in the theory Quantum electrodynamic calculations show that the transition amplitude between any states with a finite number of photons vanishes. Finite transition amplitudes are obtained only by summing over states with an infinite number of soft photons. ref name Kaku ref name IZ cite book author Claude Itzykson, Jean Bernard Zuber year ... more details
Infobox album See Wikipedia WikiProject Albums Name Infrared Roses Type Live album Artist Grateful Dead Cover DECD019.jpg Released November 1, 1991 Recorded Genre Psychedelic rock , Jam band jam Length 58 18 Label Grateful Dead Records Grateful Dead small GDCD40142 small Producer Bob Bralove Last album One From the Vault br 1991 This album Infrared Roses br 1991 Next album Two from the Vault br 1992 Album ratings rev1 Allmusic rev1Score Rating 2 5 ref Allmusic class album id r8544 tab review last Planer first Lindsay label Infrared Roses ref Infrared Roses is a Live album live compilation album by the Grateful Dead . It is a conglomeration of their famous Musical improvisation improvisational segments Drums and Space. Somewhere in the middle of the second set of a Grateful Dead concert came a period of musical improvisation . This part of the concert is commonly referred to as Space, and came right after a drum solo or duet. Infrared Roses is a compilation of these performances. There are no recognizable songs from the band s repertoire on this release. Robert Hunter lyricist Robert Hunter , lyricist with the Grateful Dead , created the names of the tracks for the album. Music from Infrared Roses was used as the soundtrack for the 18 minute Grateful Dead video Infrared Sightings . Track listing Musicians listed in order of appearance on each track . Crowd Sculpture Bralove 2 21 Deadheads Parallelogram Hart, Kreutzman 5 06 Kreutzmann trap drum left, Mickey Hart trap drum right Hart Beast Large Drums and Beam Kreutzmann Timbales Little Nemo in Nightland Bralove, Garcia, Lesh, Weir 6 16 Garcia Guitar, Weir Guitar, Lesh Bass Riverside Rhapsody Garcia, Hart, Kreutzmann, Lesh, Mydland, Weir 3 55 Garcia Guitar, Weir Guitar, Lesh Bass, Mydland Keyboards, Kreutzmann Drums, Hart Drums ... Midi Guitar Marimba , Lesh Bass Mydland Midi Keyboard Rattles, Shakers, Toms Infrared Roses Bralove ... live albums Category 1991 compilation albums cs Infrared Roses de Infrared Roses ... more details
potential, defined only by one factor, the wavelength. The importance of the infrared atmospheric ... 3 21 1 26. ref Nowadays, accurate line by line computations are possible, and careful studies of the infrared atmospheric window have been published. Kinetics of the infrared atmospheric window The infrared ... spectral window. Mechanisms in the infrared atmospheric window The infrared absorptions of the principal .... 1972 . The Nimbus 4 infrared spectroscopy experiment. 1. Calibrated thermal emission spectra. Journal ... in far infrared spectral lines between about 16 and 28 m. Clouds are excellent emitters of infrared radiation. Window radiation from cloud tops arises at altitudes where the air temperature ... CA, ISBN 9780495555735. ref . Importance for life Without the infrared atmospheric window, the Earth ... of the infrared atmospheric window has become threatened by the development of highly unreactive ... tutorial irwindows.html IR Atmospheric Window DEFAULTSORT Infrared Window Category Atmosphere Atmospheric ... more details
This is a list of Infrared topics . compactTOC8 side yes top yes num yes A ADONIS ADaptive Optics Near Infrared System ALICE accelerator Accretion disc Advanced Tactical Airborne Reconnaissance System Afocal system Air to air missile Anti ship missile Applied spectroscopy Atmospheric Infrared Sounder B Biological infrared detection system Bipolar outflow Blackbody infrared radiative dissociation Black ... Combat Identification Panel Common Infrared Countermeasures program Computed tomography laser mammography Conveyor belt furnace Cooled infrared detector Coreshine Cosmic background radiation Cosmic dust Cutoff physics , Infrared cutoff D Dangerously irrelevant operator Dark nebula Dazzler weapon Dichroic filter Diffuse Infrared Background Experiment Digital ICE Digital infrared thermal imaging ... Fast INfrared Exoplanet Spectroscopy Survey Explorer Femtolab Fiber focus infrared soldering Filter optics Forward looking infrared Frared reflective coating Free space optical communication Functional near infrared imaging G Galileo spacecraft Gamma Ray Burst Optical Near Infrared Detector Gas detector Gas laser Glow stick Greenhouse Greenhouse effect H HDRi data format Halogen infrared reflective light sources Headlamp Heat therapy Hot mirror Humanoid robot AMI I Infra red search and track InfraredInfrared guided weapons Infrared Bond stretching Infrared radiant heat shields Infrared and terrain following radar sensors Infrared and thermal testing Infrared Astronomy Infrared beacon Infrared beam Infrared blaster Infrared brightness Infrared camera Infrared Catastrophe Infrared cirrus Infrared cleaning Infrared countermeasure Infrared cut off filter Infrared dark cloud Infrared Data Association Infrared data transmission Infrared decoy flare Infrared detection Infrared detector Infrared detectors Infrared divergence Infrared dye Infrared emitter Infrared emitting Infrared excess Infrared Financial Messaging Infrared fixed point Infrared gas analyzer Infrared grill Infrared guidance ... more details
Notability Companies date January 2011 Unreferenced date January 2011 Infrared is a United Kingdom UK based drum and bass record label owned and run by J Majik and Wickaman . See also List of record labels List of jungle and drum n bass record labels External links http www.infraredmusic.com Official site http www.rolldabeats.com label infraredInfrared at Rolldabeats.com Category British independent record labels Category Drum and bass record labels UK record label stub DnB stub ... more details
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