Tag: Photoacoustic

Photoacoustic Spectroscopy: An introduction and applications

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article image Photoacoustic (PAS) or optoacoustic spectroscopyis a unique form of spectroscopy that uses sound and light to examine the behaviour of material. This technique is used tostudy thermal emission developing from non-radiative de-excitation after absorbing radiation from the incoming light. Alexander Graham Bell was the first scientist to detect the photoacoustic effect in 1880. He discovered that thin disc when exposed to an interrupted beam of sunlight produces an audible sound in UV and…Read More