Electromagnetic Radiation: These waves travel at the speed of light (approximately 3 x 108 m/s), and can be characterized by their wavelength.
EMI: Acroynm for Electro Magnetic Interference, which is the unintentional interaction (interference) between different kinds of electronics systems, such as imagers, radios, and radar systems.
Emittance (Emissivity): The fraction of incident energy (at a given wavelength or waveband) that is emitted by a target. Related to absorptance through the assumptions in Kirchoff’s Law. See Conservation of Energy.
Error Analysis (Uncertainty Analysis): A method by which the uncertainty in a measurement is quantified, to give an indication of ‘how good’ a measurement is.
Exitance: The total energy being radiated from an object, expressed in terms of a flux density. The exitance includes the energy emitted from, transmitted through, and reflected by an object.
