ANDREW BROOKES, NATIONAL PHYSICAL LABORATORY / SCIENCE PHOTO LIBRARY ANDREW BROOKES, NATIONAL PHYSICAL LABORATORY / SCIENCE PHOTO LIBRARY
Spectrophotometry research. Technician using a spectrophotometer to analyse a sample at visible light, ultraviolet and near-infrared wavelengths. Spectrophotometry determines the concentrations of different types of photons emitted by a sample, and thus allows the constituent chemical components to be quantified. Photographed at the National Physical Laboratory, in Teddington, UK.
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