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After the boiling brown pottery mixture chefs down seriously to a powder, claims Gretchen Hall, a researcher collaborating with McGovern, they’ll run the sample via an infrared spectrometer.

After the boiling brown pottery mixture chefs down seriously to a powder, claims Gretchen Hall, a researcher collaborating with McGovern, they’ll run the sample via an infrared spectrometer. That may create an exceptional artistic pattern based on what its numerous chemical constituents absorb and reflect light. They’ll compare the results from the profile for tartaric acid. If there’s a match …