Question: In this problem, we willstudy thin film interference created by an air gap between two glass slides separated by a strand of hair on

In this problem, we willstudy thin film interference created by an air

In this problem, we willstudy thin film interference created by an air gap between two glass slides separated by a strand of hair on one end, as shown below. When illuminated at normal incidence with red laser of 633 nm wavelength from above, you measure that the fringes on the glass slide are separated evenly by a distance of 0.21 mm. If the glass slides are 5 cm long, estimate the diameter of the hair strand "d". (Remember at normal incidence the reflection coefficient is given by r = (n1-n2)/{n1+n2) when light incident from medium 1 reflects from medium 2 back into medium 1.)

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