What is the ratio of the intensity at this point to the intensity at the center of a bright bridge
d=0.00014m (distance between slits)
L=12m (Length to screen/point)
I=Io cos^2(phi/2) [(Sin (B/2))/(B/2)]
I/Io=cos^2(phi/2) [(Sin (B/2))/(B/2)]
The Attempt at a Solution
I have phi, solved for b/2 and plugged it in and did everything.
I STILL GOT IT WRONG!?!?! is my equation wrong??