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
The Amazing Race en Discovery Channel 1 In the leg's second Detour was "Mariachis" or "" . In "Mariachis", teams had to find an image of Santa Muerte under a hat worn by one of the mariachis playing. In "Trajineras", teams had to find a "trajinera" (typical boats of Xochimilco) called "Zita" and find the clue inside the boat. The Amazing Race en Discovery Channel 1 The Amazing Race en Discovery Channel (; ) is a Latin American reality television game show based on the American series, "The Amazing Race". The first season of the show featured eleven teams of two with a pre-existing relationship, in a