A demonstration of this Coriolis force may be made by modifying the nozzles on a rotary lawn
sprinkler so they point straight out from the center rather than angle in one direction. As water
squirts through the now-straight nozzles, they no longer generate a rotational reaction force to spin
the nozzle assembly, and so the nozzles remain in place (this much should be obvious). However, if
someone were to try rotating the nozzle assembly by hand, they would discover the Coriolis force
opposes the rotation, acting to keep the nozzle assembly from rotating. The greater the mass flow
rate of water through the nozzles, the stronger the inhibiting Coriolis force. Instead of a rotating
lawn sprinkler, you are now the proud owner of an anti-rotating lawn sprinkler that actually fights
any attempt to rotate it: