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Gustav Heinrich Johann Apollon Tammann, Russian-German chemist and physicist (died 1938)
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Gustav Heinrich Tammann
Baltic-German metallurgist (1861–1938)
Gustav Heinrich Johann Apollon Tammann was a prominent Baltic German chemist-physicist who made important contributions in the fields of glassy and solid solutions, heterogeneous equilibria, crystallization, and metallurgy. He first predicted the order-disorder transition in…Source: Wikipedia (CC BY-SA)