Some atoms are unstable and will undergo radioactive decay. When this happens, they emit ionizing radiation are often transformed into another element. This article explains how to calculate rates of radioactive decay. Atoms which are prone to radioactive decay are known as radionuclides. Radionuclides can occur naturally, or can be man-made â such as during the fission process in a nuclear reactor.
Sir Francis Drake with his new heraldic achievement, with motto: Sic Parvis Magna, translated literally: Thus great things from small things (come). The hand out of the clouds is labelled Auxilio Divino, or With Divine Help.
Giant Cisterna Magna. Syn: Mega Cisterna Magna. Cisterna magna is a normal retro cerebellar Csf density space, when unusually prominent termed as Giant Cisterna magna. A subarachnoid septa / dural fold is usually seen within the cistern. A normal anatomical variation of no clinical significance as there are no associated Vermian or cerebellar anomalies. Normal Vermis.