https://www.superphysics.org/research/kelvin/vortex/ Recent content in Vortex Atoms on Superphysics Hugo en https://www.superphysics.org/research/kelvin/vortex/part-01/ Mon, 01 Jan 0001 00:00:00 +0000 https://www.superphysics.org/research/kelvin/vortex/part-01/ <!-- On Vortex Atoms --> <!-- Proceedings of the Royal Society of Edinburgh, Vol. VI, 1867, pp. 94-105. --> <p>A perfect liquid is a fluid perfectly destitute of viscosity or fluid friction.</p> https://www.superphysics.org/research/kelvin/vortex/part-02/ Mon, 01 Jan 0001 00:00:00 +0000 https://www.superphysics.org/research/kelvin/vortex/part-02/ <p>Two ring atoms linked together or one knotted in any manner with its ends meeting, constitute a system which, however it may be altered in shape, can never deviate from its own peculiarity of multiple continuity.</p> https://www.superphysics.org/research/kelvin/vortex/part-03/ Mon, 01 Jan 0001 00:00:00 +0000 https://www.superphysics.org/research/kelvin/vortex/part-03/ <p>Helmholtz made a very remarkable discovery: the simple vortex ring always moves relatively to the distant parts of the fluid.</p> <p>This movement is:</p> <ul> <li>in a direction perpendicular to its plane</li> <li>towards the side towards which the rotatory motion carries the inner parts of the ring.</li> </ul> <p>The determination of the velocity of this motion for rings of which the sectional radius is small compared with the radius of the circular axis, has presented mathematical difficulties which have not yet been over-come [2].</p>