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Terms
  • photoacoustic spectroscopy (PAS) A method for obtaining the optical absorption spectra of solids, semisolids, liquids and gases. PAS is inherently insensitive to reflection or scattering from the sample, analyzes opaque samples and can measure spectra below the sample surface.
  • detector 1. A device designed to convert the energy of incident radiation into another form for the determination of the presence of the radiation. The device may function by electrical, photographic or visual means. 2. A device that provides an electric...
  • radiation detector Any of the many devices used to detect the presence of radiation from a specific region of the electromagnetic spectrum.
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