Rutherford (unit) Rutherford (unit) The rutherford (symbol Rd) is a non-SI unit of radioactive decay. It is defined as the activity of a quantity of radioactive material in which one million nuclei decay per second. It is therefore equivalent to one megabecquerel, and one becquerel equals one microrutherford. One rutherford is equivalent to 2.703 × 10 curie. The unit was introduced in 1946. It was named after British/New Zealand physicist and Nobel laureate Lord Ernest Rutherford (Nobel Prize in 1908), who was an early leader in the study of atomic nucleus disintegrations. After the becquerel was introduced in 1975 as the SI
Si Ronda Si Ronda Si Ronda is a 1930 silent film from the Dutch East Indies which was directed by Lie Tek Swie and starred Bachtiar Effendi. Based on contemporary Betawi oral tradition, it follows the exploits of a bandit, skilled in "silat" (traditional Malay martial arts), known as Si Ronda. In the "lenong" stories from which the film was derived, Ronda was often depicted as a Robin Hood type of figure. The production, now thought lost, was one of a series of martial arts films released between 1929 and 1931. "Si Ronda" received little coverage in the media upon its release.