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In chemistry, polarity is a separation of electric charge leading to a molecule or its chemical groups having an electric dipole moment, with a negatively charged end and a positively charged end. Polar molecules must contain one or more polar bonds due to a difference in electronegativity between the bonded atoms.
Polarizability usually refers to the tendency of matter, when subjected to an electric field, to acquire an electric dipole moment in proportion to that applied field. It is a property of particles with an electric charge.
In planar dynamics a pole is a center of rotation, the polar is the force line of action and the conic is the mass–inertia matrix. [4] The pole–polar relationship is used to define the center of percussion of a planar rigid body. If the pole is the hinge point, then the polar is the percussion line of action as described in planar screw theory.
Chemical polarity, in chemistry, a separation of electric charge; Magnetic polarity, north or south poles of a magnet; Polar reciprocation, a concept in geometry also known as polarity; Trilinear polarity, a concept in geometry of the triangle; Polarity of a literal, in mathematical logic
Such a relation between points and lines generated by a conic is called pole-polar relation or polarity. The pole is the point; the polar the line. By calculation one can confirm the following properties of the pole-polar relation of the ellipse: For a point (pole) on the ellipse, the polar is the tangent at this point (see diagram: ,).
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The polar surface area (PSA) or topological polar surface area (TPSA) of a molecule is defined as the surface sum over all polar atoms or molecules, primarily oxygen and nitrogen, also including their attached hydrogen atoms. PSA is a commonly used medicinal chemistry metric for the
Small businesses are bracing for stiff tariffs that President-elect Donald Trump has proposed as one of his first actions when he takes office. Trump has proposed importers pay a 25% tax on all ...