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Thermography can refer to a printing process and a imaging process.
Thermographic Imaging
 Image of a small dog taken in mid-infrared ("thermal") light (false color) Thermography, or thermal imaging, is a type of infrared imaging. Thermographic cameras detect radiation in the infrared range of the electromagnetic spectrum (roughly 900-10,000 nanometer) and produce images of that radiation. Since infrared radiation is emitted by all objects at ambient temperature, according to the black body radiation law, thermography makes it possible to "see" one's environment with or without visible illumination. The amount of radiation emitted by an object increases with temperature, therefore thermography allows you to see variations in temperature, hence the name. With a thermographic camera warm objects stand out well against cooler backgrounds. Humans and other warm-blooded animals become easily visible against the environment day or night, hence historically its extensive use can be ascribed to military and security services. Image of a small dog taken in infrared light. ...
Image of a small dog taken in infrared light. ...
Image of a small dog taken in mid-infrared (thermal) light (false color) Infrared (IR) radiation is electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation. ...
Radiation has a variety of different meanings. ...
Image of a small dog taken in mid-infrared (thermal) light (false color) Infrared (IR) radiation is electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation. ...
The electromagnetic spectrum is the range of all possible electromagnetic radiation. ...
As the temperature decreases, the peak of the black body radiation curve moves to lower intensities and longer wavelengths. ...
In physics, the spectral intensity of electromagnetic radiation from a black body at temperature T is given by the Plancks law of black body radiation: where: I(ν) is the amount of energy per unit time per unit surface area per unit solid angle per unit frequency. ...
The optical spectrum (light or visible spectrum) is the portion of the electromagnetic spectrum that is visible to the human eye. ...
Thermal imaging photography finds many other uses. For example, firefighters use it to see through smoke, find persons, and localize hotspots of fires. With thermal imaging, power lines maintenance technicians locate overheating joints and parts, a telltale sign of their failure, to eliminate potential hazards. Where thermal insulation becomes faulty, building construction technicians can see heat leaks to improve the efficiencies of cooling or heating air-conditioning. Thermal imaging cameras are also installed in some luxury cars to aid the driver, the first being the 2000 Cadillac DeVille. Some physiological activities, particularly responses, in human beings and other warm-blooded animals can also be monitored with thermographic imaging. [1] Firefighter in full turn out gear with a pickhead axe. ...
Smoke is a suspension in air of small particles resulting from incomplete combustion of a fuel. ...
Transmission towers Transmission lines in Lund, Sweden Electric power transmission, or more accurately Electrical energy transmission, is the second process in the delivery of electricity to consumers. ...
This page refers to thermal insulation. ...
Construction on the North Bytown Bridge in Ottawa, Canada. ...
The Cadillac Deville is Cadillacs largest and most luxurious car model. ...
The appearance and operation of a modern thermographic camera is often similar to a camcorder. Enabling the user to see in the infrared spectrum is a function so useful that ability to record their output is often optional. A recording module is therefore not always inbuilt. An infrared camera, or a thermographic camera, is a device that forms an image using infrared radiation, similar to a common camera that forms an image using visible light. ...
8mm Camcorder mini-DV Camcorder Sony DV Handycam A camcorder is a portable electronic device (generally a digital camera) for recording video images and audio onto a storage device. ...
Instead of CCD sensors, thermal imaging cameras use microbolometer arrays. Their resolution is considerably lower than of optical cameras, mostly only 160x120 or 320x240 pixels. Thermographic cameras are much more expensive than their visible-spectrum counterparts, and higher-end models are often export-restricted. Older bolometers or more sensitive models require cooling; only the modern uncooled arrays allow construction of small, rugged handheld devices. A charge-coupled device (CCD), is an integrated circuit containing an array of linked, or coupled, capacitors. ...
A Microbolometer is a specific type of bolometer used as a detector in a thermal camera. ...
See also: infrared camera An infrared camera, or a thermographic camera, is a device that forms an image using infrared radiation, similar to a common camera that forms an image using visible light. ...
Thermographic Printing Thermographic printing refers to two types of printing, both of which rely on heat to create the letters or images on a sheet of paper.
The simplest type is where the paper has been coated with a material that changes colour on heating. This is the thermal printing in old fashioned fax machines and can still be seen in some shop till receipt printers. Direct thermal printers create an image by selectively heating coated paper when the paper passes over the thermal print head. ...
A cash register or till (British English) is a mechanical or electronic device for calculating and recording sales transactions, and an attached cash drawer for storing currency. ...
A receipt is a document made by a merchant, landlord, vendor, or other creditor in favor of a customer acknowledging having received an amount of money for some purpose. ...
More complex is thermographic printing that melts print off a ribbon and onto the sheet of paper (thermal ink transfer printing). This type of printing is used to create the raised bumpy print on expensive business cards, the raised rubbery print on some T-shirts and the magnetic print on cheques. Magnetic Ink Character Recognition, or MICR, colloquially pronounced my-kur, is a special kind of optical character recognition (OCR) technology that was adopted mainly by the U.S. banking industry to facilitate the processing of cheques. ...
Typical cancelled personal cheque as used in the U.S. A cheque (CwE) or check (AmE), thought to have developed from Persian Ú†Ùƒ chek, is a negotiable instrument instructing a financial institution to pay a specific amount of a specific currency from a specific demand account held in the maker/depositor...
External links - Thermal Imaging
- Image gallery
- Medical information
- Thermography related
- Thermal Imaging Systems
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