The Secret of Wilhelm Storitz 2011, Bison Books brought out a new edition, the first to be based on Verne's manuscript. Earlier editions feature a version of the novel heavily rewritten by Jules Verne's son Michel, who improbably pushed the date of the story back to the 18th century, despite many references to 19th century discoveries, such as Roentgen rays. The Secret of Wilhelm Storitz The Secret of Wilhelm Storitz ("fr.: Le Secret de Wilhelm Storitz") is a fantasy novel by Jules Verne, published by Louis-Jules Hetzel in 1910. The manuscript was written around 1897. It was the last one Verne sent to Hetzel. Railway
Roentgen (unit) 1962 it was redefined. The CCU decided to define the SI unit of absorbed radiation in terms of energy per unit mass, which in MKS units was J/kg. This was confirmed in 1975 by the 15th CGPM, and the unit was named the "gray" in honour of Louis Harold Gray, who had died in 1965. The gray was equal to 100 rad. The definition of the roentgen had had the attraction of being relatively simple to define for photons in air, but the gray is independent of the primary ionizing radiation type, and can be used for both kerma and