nucleus
NUCLEUS
The positively charged dense central part of an atom. In Biology the term first introduced by Miescher, employed to describe a structure round in the cells of with the tissues of animals and plants are composed. In general it is a viscous spherical body containing a structure known as the plasmosome or nucleolus and a tangle of material chromatin characterized by a special affinity for basic dyes, usually spherical mass of protoplasm found in the most living cells that directs the activities of the cell. The extremely small, dense, positively charged central portion of moving electrons the nucleus is very small as compared to the entire atom the positively charged core of an atom. 1
HISTORY OF NUCLEUS
Based on Thomson’s discovery of the electron, Thomson suggested that atoms were spheres of positively charged matter with negatively charged, electrons embedded in them. Later one of his students ernest Rutherford came up with the idea that atoms should consist of a tiny but massive positive nucleus with electrons circling outside it.2 Ernest Rutherford (1871 – 1937) Rutherford obtained this conclusion through a series of experiments known as the alpha particle scattering experiments. During those years, he worked with his co-workers, Geiger and Marsden in the University of Manchester together, they bombarded thin pieces of gold foil with alpha particles. Most of the Alpha particles passed through but a few were deflected at a sharp angle of over 90o their results revealed the presence of atomic nucleus and led to Rutherfords atomic model.3
FORCE OF THE NUCLEUS
The strong nuclear force is an attractive force that acts between all nucleus protons and neutrons alike. Thus protons attract each other via force at the same time they repel each other via the electric force, nuclei are bound together by the residual strong force, the Mesidual strongforce is minor medium of the strong force which
The positively charged dense central part of an atom. In Biology the term first introduced by Miescher, employed to describe a structure round in the cells of with the tissues of animals and plants are composed. In general it is a viscous spherical body containing a structure known as the plasmosome or nucleolus and a tangle of material chromatin characterized by a special affinity for basic dyes, usually spherical mass of protoplasm found in the most living cells that directs the activities of the cell. The extremely small, dense, positively charged central portion of moving electrons the nucleus is very small as compared to the entire atom the positively charged core of an atom. 1
HISTORY OF NUCLEUS
Based on Thomson’s discovery of the electron, Thomson suggested that atoms were spheres of positively charged matter with negatively charged, electrons embedded in them. Later one of his students ernest Rutherford came up with the idea that atoms should consist of a tiny but massive positive nucleus with electrons circling outside it.2 Ernest Rutherford (1871 – 1937) Rutherford obtained this conclusion through a series of experiments known as the alpha particle scattering experiments. During those years, he worked with his co-workers, Geiger and Marsden in the University of Manchester together, they bombarded thin pieces of gold foil with alpha particles. Most of the Alpha particles passed through but a few were deflected at a sharp angle of over 90o their results revealed the presence of atomic nucleus and led to Rutherfords atomic model.3
FORCE OF THE NUCLEUS
The strong nuclear force is an attractive force that acts between all nucleus protons and neutrons alike. Thus protons attract each other via force at the same time they repel each other via the electric force, nuclei are bound together by the residual strong force, the Mesidual strongforce is minor medium of the strong force which