The characteristic of the square sail, apart from its shape, is that it always presents the same face to the wind, though the yard may pivot considerably about the mast.
Because the most strange and most confounding thing about this circumstance or world in which we have to live consists in the fact that it always presents to us, within its inexorable circle or horizon, a variety of possibilities for our action, a variety in the face of which we are obliged to choose and, therefore, to exercise our freedom.
And conversely, Earth's gravity has slowed the moon's rotation so that it always presents the same face to its parent planet.
Tidal forces also cause a body's rotation to gradually become tidally locked, such that it always presents the same face to its companion.
Sometimes the nonhuman is a threat, at other times a comfort, but it always presents a profound ethical challenge based in a stark existential mystery: Who are we?
Interestingly, Gliese 581g is tidally locked to the star, meaning that it always presents the same face to the star, just as the Moon does to Earth.
In addition, as with most moons in the solar system, Charon is in a state of synchronous rotation; i.e., it always presents the same face to Pluto.
It's probably tidally locked, meaning that it always presents the same face to the star, resulting in permanent day and night sides with huge differences in temperature.
It is well known that, for a model to describe the real world which is affected by many kinds of factors, the corresponding non-autonomous model is more natural and precise than the autonomous one, moreover, it always presents a nonlinear equation but not just a linear one.
As a result, it always presents the same face to the planet.
