Editing Apparent wind (section)

==Definition of apparent wind==
The ''apparent wind'' is the wind experienced by an observer in motion and is the [[relative velocity]] of the wind in relation to the observer.{{CN|date=September 2016}}

The ''[[velocity]] of the apparent wind'' is the [[vector sum]] of the ''velocity of the headwind'' (which is the velocity a moving object would experience in still air) plus the ''velocity of the true wind''.  The headwind is the [[additive inverse]] of the object's velocity; therefore, the ''velocity of the apparent wind'' can also be defined as a vector sum of the ''velocity of the true wind'' minus the ''velocity of the object''.{{CN|date=September 2016}}