High Quality Content by WIKIPEDIA articles! Rasmus Malling-Hansen (5 September 1835 – 27 September 1890) was a Danish inventor, minister and principal at the Royal Institute for the Deaf, and one of the true pioneers of the 19th century. He possessed a great urge to bring forward new ideas and new inventions, and to reveal the secrets of unknown connections in nature. Nothing was too small to arouse the interest of Malling-Hansen, and in even the smallest things he saw a potentially meaningful detail. This led him to be one of Denmark`s most colourful inventors, a farsighted educational reformer, and the discoverer of an unknown factor that affects all growth in nature.