Their rotation gradually decreases from 495 to 212 rpm to keep the disc moving past the read laser at 1.2 m/s (3 ft. 11 in.

During a transit, Earth can be seen from Saturn as a small black disc moving across the face of the sun.

Gundersen looked up and saw the tiny white disc moving rapidly, low in the sky, seemingly skimming the fringe of the treetops.

The energy required to keep the disc moving, despite this reactive force, is exactly equal to the electrical energy generated (plus energy wasted due to friction, Joule heating, and other inefficiencies).

During a transit, Jupiter can be seen from the outer planet as a small black disc moving across the face of the Sun.

During a transit, Earth would be visible from Mars as a small black disc moving across the face of the Sun.

The mechanics involve two semicircular discs moving back and forth, with both allowing the flow of blood as well as the ability to form a seal against backflow.

The thrower releases the disc moving away from the throwing axis (outside-), but with the side of the disc closest to the body lowest.

Eddy current dynamometers require an electrically conductive core, shaft, or disc moving across a magnetic field to produce resistance to movement.

But the edge of the disc moving towards the Earth will result in a slightly different shift from that of the disc moving away from the Earth.