Roentgen (unit) absorbed dose in a wide range of matter. When measuring absorbed dose in a human due to external exposure, the SI unit the gray, or the related non-SI rad are used. From these can be developed the dose equivalents to consider biological effects from differing radiation types and target materials. These are equivalent dose, and effective dose for which the SI unit sievert or the non-SI rem are used. The following table shows radiation quantities in SI and non-SI units: Roentgen (unit) The roentgen or röntgen () (symbol R) is a legacy unit of measurement for the exposure of X-rays
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