Antisolar point anthelic point, such as the anthelion, Wegener arcs, Tricker arcs and the parhelic circle itself. Antisolar point The antisolar point is the abstract point on the celestial sphere directly opposite of the Sun from an observer's perspective. This means that the antisolar point lies above the horizon when the Sun is below it, and vice versa. On a sunny day, the antisolar point can be easily found; it is located within the shadow of the observer's head. Like the zenith and nadir, the antisolar point is not fixed in three-dimensional space, but is defined relative to the observer. Each observer
Opposite (semantics) Opposite (semantics) In lexical semantics, opposites are words lying in an inherently incompatible binary relationship, like the opposite pairs "big : small", "long : short", and "precede : follow". The notion of incompatibility here refers to the fact that one word in an opposite pair entails that it is not the other pair member. For example, something that is "long" entails that it is not "short". It is referred to as a 'binary' relationship because there are two members in a set of opposites. The relationship between opposites is known as opposition. A member of a pair of opposites can