The Shape Of The Atomic Nucleus
The shape of the atomic nucleus depends on the variety of factors related to the size and shape of its nucleon (proton or neutron) constituents and the nuclear force holding them together. The spatial extent of the prolate spheroid nucleon (and larger nuclides) is determined by Root mean square, root mean squared (RMS) charge radius of the proton, as determined mainly by electron and muon scattering experiments, as well as spectroscopic experiments. An important factor in the internal structure of the nucleus is the nucleon-nucleon potential, which ultimately governs the distance between individual nucleons, and the radial charge density of each nuclide. The charge density of some light nuclide indicates a lesser density of nucleonic matter in the center which may have implications for a nucleonic nuclear structure. A surprising non-spherical expectation for the shape of the nucleus originated in 1939 in the spectroscopic analysis of the quadrupole moments while the prolate spheroi ...
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Spheroid
A spheroid, also known as an ellipsoid of revolution or rotational ellipsoid, is a quadric surface (mathematics), surface obtained by Surface of revolution, rotating an ellipse about one of its principal axes; in other words, an ellipsoid with two equal semi-diameters. A spheroid has circular symmetry. If the ellipse is rotated about its major axis, the result is a ''prolate spheroid'', elongated like a rugby ball. The ball (gridiron football), American football is similar but has a pointier end than a spheroid could. If the ellipse is rotated about its minor axis, the result is an ''oblate spheroid'', flattened like a lentil or a plain M&M's, M&M. If the generating ellipse is a circle, the result is a sphere. Due to the combined effects of gravity and rotation of the Earth, rotation, the figure of the Earth (and of all planets) is not quite a sphere, but instead is slightly flattening, flattened in the direction of its axis of rotation. For that reason, in cartography and geode ...
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