Hermann of Reichenau (July 18, 1013 – September 24, 1054), also called Hermannus Contractus or Hermannus Augiensis or Herman the Cripple, was an 11th-century scholar, composer, music theorist, mathematician, and astronomer.
=== Odstranjevanje kofeina ===Tekoči ogljikov dioksid je dobro topilo za veliko organskih spojin in se uporablja za odstranjevanje kofeina iz kave.