Roentgen equivalent man has been defined since 1976 as equal to 0.01 sievert, which is the more commonly used SI unit outside the United States. A number of earlier definitions going back to 1945 were derived from the roentgen unit, which was named after Wilhelm Röntgen, a German scientist who discovered X-rays. The acronym is now a misleading historical artifact, since 1 roentgen actually deposits about 0.96 rem in soft biological tissue, when all weighting factors equal unity. Older units of rem following other definitions are up to 17% smaller than the modern rem. One rem carries with it a 0.05% chance of
The Invention of the Jewish People The Invention of the Jewish People The Invention of the Jewish People (, literally "When and How Was the Jewish People Invented?") is a study of the historiography of the Jewish people by Shlomo Sand, Professor of History at Tel Aviv University. It has generated a heated controversy. The book was in the best-seller list in Israel for nineteen weeks. An English translation of the book was published by Verso Books in October 2009. The book has also been translated into German, Italian, Spanish, Portuguese, Arabic, French and Russian, and as of late 2009 further translations were underway. "The Invention