1 ene 1950 año - ≈1950: Spectrometry, the gold standard of chemical detection, is improved largely by John Beynon and Fred McLafferty. The use of spectrometers skyrockets in U.S forensics.

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Spectrometers can detect a wide range of chemicals, including those of human decomposition, but also of drugs, such as cocaine and marijuana. They are extremely useful to forensics

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