Hermann Theodor Simon

Hermann Theodor Simon ( born January 1, 1870 in Kirn, † December 22, 1918 in Göttingen ) was a German physicist.

Life

He studied in Heidelberg and Berlin with Heinrich Rubens and August Kundt († May 1894 ) where he earned his doctorate in 1894 with a thesis on the dispersion of UV radiation. He was an assistant to Eilhard Wiedemann in Erlangen and his habilitation in 1896.

In 1897 he observed in Göttingen the superposition of alternating currents on DC and invented in 1898 the singing arc lamp, a kind radiophonisches instrument. ( William Duddell had his singing arc possibly invented in 1894, but not until 1900 presented. ) The arc lamp emits undamped oscillations. The arc supplying DC replaced the lost heat and radiation power. The following year, he discovered that the arc is so sensitive to the fluctuations of the air surrounding it that he even follows the caused by the human voice small vibrations in the air and can be successfully used as a microphone.

1898 Eduard Riecke took him as his assistant in Göttingen. As of October 1899, they issued the journal Physical and Simon took over the editorship until 1904.

In 1899 he invented together with Max Reich, a system of radio telephony, in which a selenium receiver operated a talking ball.

Easter 1900 he went to Frankfurt am Main as a lecturer in physics at the Physics Club and Director of the Physics Institute. In the fall of 1901 he returned to Göttingen and was ao ( Had built the Theodor des Coudres since 1895), Professor and Director of the Department of Applied Electricity.

In December 1905, the new building was completed and converted the department into a separate institution. In 1907 he became a full professor.

By 1909 he proposed the creation of the Radio Electrical Research Institute for Marine and army in Göttingen, which was then built by Max Reich.

After his death, Max Reich took over his successor.

Simon was since beginning his studies in Heidelberg member of the Corps Suevia Heidelberg.

Writings

• About dispersion ultraviolet rays. In 1894.
• About a new photographic Photometrierverfahren and its application. In 1896.
• The Carl Simon Söhne 1857 *, 1907., 1907.
• The electric arc - experimental lecture at the request of the Scientific Association in Berlin held on January 11, 1911 1911. .
• Life and science, science and life., 1918.