One of the best examples of this new form of teaching application is Futaba, game in which up to four children try to recognize a spinning object, and then identify what it is.
The Cassini spacecraft snapped this shot in February as it swooped past Calypso, which trails behind the larger moon Tethys in roughly the same orbit around Saturn.
The wheel would need to withstand immense and constantly changing stresses as it rotated, so to make the structure more robust, the steel sections were bolted rather than welded together.
One of these urges had to do with creating a state of peace in the midst of turbulence, a "still point of the turning world," to borrow a phrase from T. S. Eliot.
The Earth's magnetic field is generated as the molten iron of the Earth's outer core revolves around its solid inner core; when surges in the molten iron occur, magnetic tempests are created.
A rotary engine attached to the steam engine enabled shafts to be turned and machines to be driven, resulting in mills using steam power to spin and weave cotton.
Colt became fascinated with the ship's wheel, particularly the way it could alternately spin or be locked in a fixed position through the use of a clutch.