Roentgen (unit) Roentgen (unit) The roentgen or röntgen () (symbol R) is a legacy unit of measurement for the exposure of X-rays and gamma rays. It is defined as the electric charge freed by such radiation in a specified volume of air divided by the mass of that air. In 1928 it was the first international measurement quantity for ionising radiation to be defined for radiation protection, and was an easily replicated method of measuring air ionization directly by using an ion chamber. It is named after the German physicist Wilhelm Röntgen, who discovered X-rays. Although relatively easy to measure, it had
Professor Moshimo Professor Moshimo Professor Moshimo is a Recurring character in the animated television series Robotboy, and is his creator. He received a letter from Tommy Turnbull about him looking forward to his latest invention which resulted in Professor Moshimo sending Robotboy to Tommy to take care of. The Professor's Japanese fiancée Miumiu, acts as his assistant. His rivals are Dr. Kamikazi and Björn Björnson. Robotboy was Moshimo's second invention and is the main character. A prototype of Robotboy, and his was first invention. Protoboy was stolen by a young Dr. Kamakazi, who turned him to evil. However, Kamakazi made him too