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Low-Temperature Measurement of Shiny Metals

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New instrumentation designs take unique directions.

William Fullam, Mikron Infrared Inc.

Understanding and controlling the temperature of metals at all times during the manufacturing process is paramount if companies are to deliver products that are ever stronger and lighter. With new, unoxidized metals, the emissivity or radiation efficiency of the surface will lead to inaccuracies and unrepeatable results. The main tool that physics provides to correct the problem is a range of wavelengths. By choosing a short wavelength, we can improve the errors — theoretically, an order of magnitude, although in the real world the improvement in repeatability can be greater. The choice of...Read full article

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    Published: February 2004
    Glossary
    radiation
    The emission and/or propagation of energy through space or through a medium in the form of either waves or corpuscular emission.
    Basic ScienceFeaturesindustrialPlancks lawradiationSensors & Detectorsshort wavelengthwavelengthsWiens displacement law

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