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
Kevin Roentgen Kevin Roentgen Kevin Roentgen (pronounced rent-gehn) is a singer/songwriter/producer and formerly guitarist for UK Platinum, Brit Award-winning American rock band Orson, who is currently based in Nashville, TN. Roentgen is previously known for fronting L.A. rock bands American Pearl (Wind-Up Records), SOUL (Elektra Records) and Goldsboro. Following the break-up of American Pearl, Roentgen spent most of 2003 in the studio writing and demo-ing new songs. The result was Praying Hands, "The Acoustic EP", recorded and co-produced by Noah Shain at White Buffalo Studio in Hollywood. In 2005, Roentgen joined L.A. band Orson as a guitarist. In 2006, Orson released their