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  • Harnessing the Power of Infrared Energy
    Infrared (IR) energy or radiant energy consists of electromagnetic waves or photons. All materials continuously emit or absorb electromagnetic waves. Therefore, all materials emit or absorb infrared. Infrared is a form of light that is invisible to human eyes but detectable by the feeling of heat
  • About Infrared Thermography
    Thermography is the use of an infrared imaging and measurement camera to "see" and "measure" thermal energy emitted from an object. Thermal, or infrared energy, is light that is not visible because its wavelength is too long to be detected by the human eye; it's the part of the electromagnetic
  • Infrared Radiation and Radiometry Introduction
    All solid bodies that have temperatures above absolute zero (0 Kelvin, -273°C) emit electromagnetic waves. The thermal radiation portion of this energy is called infrared radiation. Wien's Displacement Law describes the relationship between a solid body's temperature and its emitting peak
  • Light Sensors
    Light sensors often use an infrared LED as a light source. Infrared LEDs have a greater intensity than LEDs that emit visible light. And when infrared photodiodes are used the sensors are relatively insensitive to ambient light. Photoelectric light sources are often modulated at a given frequency
  • What is Thermography?
    that are very hot (such as the Sun) emit thermal radiation viewable within multiple parts of the EM spectrum such as the "visible", the "ultraviolet" (UV) and the "infrared" areas.
  • Emissivity of Most Common Materials
    Emissivity is the measure of an object's ability to emit infrared energy. Emitted energy indicates the temperature of the object. Emissivity can have a value from 0 (shiny mirror) to 1.0 (blackbody). Most organic, painted, or oxidized surfaces have emissivity values close to 0.95. Majority
  • Introduction to Thermopile Detectors
    and do not emit any radiation. Our detector's spectral absorption is flat from the ultraviolet to the far infrared. Spectral sensitivity is defined by the selection of optical band-pass filters. Thermopile output is generally in the micro-Volt to milli-Volt range depending on target size, temperature
  • Engineering Aspects of Radiation Theory (.pdf)
    All bodies above zero temperature (-273°C) emit infrared radiation in the form of waves which pass through space and are partly absorbed by bodies they strike. This radiation forms a part of the electromagnetic spectrum and has the strongest heating effect of all. The nature of the radiation
  • The Importance of IR Thermography in Building-Science and the Conservation of Energy in the Residential Sector
    and measure temperature variations in your home. All materials on earth emit heat energy in the portion of the energy spectrum, but the human eye cannot see this energy. An infrared camera not only records infrared images but also accurately measures the temperature variations of building materials
  • Local Temperature Rises Caused by the Use of Commercial Mobile Phones
    Hand-held mobile phones emit electromagnetic radiation and can therefore cause local heating of biological tissues, e.g., in the regions of the human head normally covered by these phones. The goal of this paper is to visualize, quantify, and compare these thermal effects in various subjects using