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
David Roentgen Gotha, exhibited at Callenberg Castle in Coburg, north Bavaria. In 2012 Wolfam Koepp of the Metropolitan Museum of Art discovered a particular type of Roentgen table with removable legs for easier transport. Was this table the earliest form of flatpack? A team from the Victoria and Albert Museum investigated further and confirmed Koepp's process and conclusions in March 2014, shedding new light on the inventor of flat-pack / ready-to-assemble furniture. Until then, Gillis Lundgren held that title from 1951 for IKEA. Its blame has now been traced back 200 years before the pretender. David Roentgen not only mastered intrigue but