First published in 1883, Joseph John Thomson's fascinating treatise explores the subject of 'vortex rings'. A vortex ring, also known as 'a toroidal vortex', is a torus-shaped vortex existing within a fluid or gas where the fluid spins along an imaginary axis line that creates a closed loop. Sir Joseph John Thomson (1856 - 1940) was an English physicist and Nobel Laureate in Physics. He is most famous for having discovered and identified the electron,...