- #1

- 53

- 8

- Homework Statement
- If the three slits have equal widths, show that intensity I1 of light on the screen as a function of y is I = I/9[1 + 2cos(2pi * dy/Rw)]^2 where w is wavelength

If the width of the central slit is made twice as wide show that the intensity becomes I = 16I/9cos^4(pi*dy/Rw)

- Relevant Equations
- Sin/cosine addition formulas

Here’s an image of the equations better layed out

here’s the solution, I don’t understand how they are squaring it to get the time average

here’s the solution, I don’t understand how they are squaring it to get the time average