1 rad = 0.01 gray (Gy) = 1 cGy = 0.01 joule of energy absorbed per kilogram of tissue. A gray, (symbol: Gy), is the SI unit of energy for the absorbed dose of radiation. ... A gray, (symbol: Gy), is the SI unit of energy for the absorbed dose of radiation. ... The joule (symbol J, also called newton meter, watt second, or coulomb volt) is the SI unit of energy and work. ... The international prototype, made of platinum-iridium, which is kept at the BIPM under conditions specified by the 1st CGPM in 1889. ...
The unit is named for the New Zealand nuclear physicist Ernest Rutherford, later named Lord Rutherford (1871-1937), whose study of radioactivity led to the discovery in 1911 that most of the mass of an atom is concentrated in a tiny nucleus.
The company-sized RAD Abteilung - not to be confused with the unit of the same name in the Wehrmacht which was a battalion-sized unit - was the core group around which the functions of the Reichsarbeitdienst revolved.
During the summer of 1938 until the war began, 300 RADunits aided in the construction of the Westwall fortification line along the western German boarder, while in the east, another 100 RADunits aided in the construction of the Ostwall fortification line along the eastern German boarder.
RADunits served on all fronts during WWII, from Norway to the Mediterranian Sea, and from France in the west, to the far reaches of Russia in the east.
Feeds |
Contact