It is indeed surprising that the myth of a discernible Coriolis force
effect on the water in a bath tub persists. Apart from the weakness of the
force pointed out in the editorial, the myth was experimentally examined
in 1965 by L. M. Trefethen et al in an extremely careful experiment and
found to have no basis (鈥楾he bath-tub vortex in the southern hemisphere鈥�,
Nature, vol 207, p 1085.
D. S. Parasnis University of Lulea, Sweden
