Fringe width is the distance between two consecutive bright spots (maximas, where constructive interference take place) or two consecutive dark spots (minimas, where destructive interference take place).

What is fringe with fringe width?

The distance between two consecutive bright or dark fringes is called the fringe width. The fringe formed at the centre of the fringe pattern is called the central bright fringe.

What is fringe width formula?

What is Fringe Width in YDSE? The distance between any two consecutive dark or bright fringes and all the fringes are of equal lengths. Fringe width is given by, β = D/dλ.