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  2. Sun-synchronous orbit - Wikipedia

    en.wikipedia.org/wiki/Sun-synchronous_orbit

    This is slightly retrograde compared to the direction of Earth's rotation: 0° represents an equatorial orbit, and 90° represents a polar orbit. [5] Sun-synchronous orbits are possible around other oblate planets, such as Mars.

  3. Direction (geometry) - Wikipedia

    en.wikipedia.org/wiki/Direction_(geometry)

    Three line segments with the same direction. In geometry, direction, also known as spatial direction or vector direction, is the common characteristic of all rays which coincide when translated to share a common endpoint; equivalently, it is the common characteristic of vectors (such as the relative position between a pair of points) which can be made equal by scaling (by some positive scalar ...

  4. Cardinal direction - Wikipedia

    en.wikipedia.org/wiki/Cardinal_direction

    Direction determination refers to the ways in which a cardinal direction or compass point can be determined in navigation and wayfinding.The most direct method is using a compass (magnetic compass or gyrocompass), but indirect methods exist, based on the Sun path (unaided or by using a watch or sundial), the stars, and satellite navigation.

  5. Burt's solar compass - Wikipedia

    en.wikipedia.org/wiki/Burt's_solar_compass

    Burt's solar compass or astronomical compass/sun compass is a surveying instrument that makes use of the Sun's direction instead of magnetism. William Austin Burt invented his solar compass in 1835. The solar compass works on the principle that the direction to the Sun at a specified time can be calculated if the position of the observer on the ...

  6. Direction - Wikipedia

    en.wikipedia.org/wiki/Direction

    Direction Records, a label began by Bobby Darin. Direction (record label) , a record label in the UK in the late 1960s, a subsidiary of CBS Records, specialising in soul music Directions: The Plans Video Album , a DVD video album made of videos inspired by songs from indie rock/pop band Death Cab for Cutie's album Plans

  7. Roundabout - Wikipedia

    en.wikipedia.org/wiki/Roundabout

    The Hotel Indonesia Roundabout in Jakarta, Indonesia A roundabout in Kent, UK on the A13 highway near Sadlers Farm. A roundabout, a rotary and a traffic circle are types of circular intersection or junction in which road traffic is permitted to flow in one direction around a central island, and priority is typically given to traffic already in the junction.

  8. Orientation (geometry) - Wikipedia

    en.wikipedia.org/wiki/Orientation_(geometry)

    Changing orientation of a rigid body is the same as rotating the axes of a reference frame attached to it.. In geometry, the orientation, attitude, bearing, direction, or angular position of an object – such as a line, plane or rigid body – is part of the description of how it is placed in the space it occupies. [1]

  9. Position of the Sun - Wikipedia

    en.wikipedia.org/wiki/Position_of_the_Sun

    Usually, the scales are chosen so that equal distances on the diagram represent equal angles in both directions on the celestial sphere. Thus 4 minutes (more precisely 3 minutes, 56 seconds), in the equation of time, are represented by the same distance as 1° in the declination , since Earth rotates at a mean speed of 1° every 4 minutes ...