Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: May 24, 2025
A little left rudder again puts the needle into an anti-clockwise motion. With his attention concentrated on our direction, the pilot, impatient at waiting for the needle to become steady, unconsciously kicks the rudder-controls, first to one side, then to the other. The needle begins to swing around, and the compass is thus rendered useless for the time being.
If the disc is turned in an anti-clockwise direction, the lines seem to move towards the circumference and disappear. To get the proper effect the gaze should be fixed and not attempt to follow the lines round. The Rolling Circles. Figs. 138 and 139 are variations of the same idea. When spun at a certain rate the larger circles will appear to run independently round the small.
Word Of The Day
Others Looking