Article by:Ouma George,Awel Eshetu and Bassein Natalia
Spatial Ø Spatial and Temporal coherence
Spatial Spatial coherence is a concept of wave disturbance describing describing the correlation between periodic transmitted transmitted energy (wave signals) from from one point to another,it can also be said that it is a mutual interdependence or connection of variable wave quantities,the coherence coherence is presented as a function of distance; the correlation against an absolute distance between points in question.While spatial coherence is concerned with the phase correlation of waves in different observation points, temporal coherence is entails the phase correlation of waves at a given point in space at two different instances of time.