The IAU defines a planet’s north pole as the pole lying north of the solar system’s invariable plane. A planet’s positive pole is determined using its direction of rotation and the right ...

When you think of a vector, many people probably call up Vector's definition (from Despicable Me). He says: It's a mathematical term. A quantity represented by an arrow with both direction and ...

Figure 1: Elongation and polarization in the Dictyota dichotoma embryo. Figure 2: Determination of direction of the polarization vector: elongation and chloroplast distribution. Figure 3 ...

Treat acceleration as a vector when there is another vector quantity, such as velocity or force, involved in a question. Forces need a size and direction, eg \(300 N\) to the left.