1. Does light diffract when it passes through a window? If your answer is no, ex

Question

1. Does light diffract when it passes through a window? If your answer is no, explain why not. If your answer is yes, explain why we don't routinely observe diffraction patterns.

4. What does the term "missing order" mean? How will you be able to tell if your light patterns have a missing order?

5. What is the effect on the diffraction pattern from a double slit if:
a.) the distance between slits is kept fixed and the slit width varied?

b.) the slit width is kept fixed and the distance between slits is varied?

Explanation / Answer

1. y = m lamdab L/d, you window d is very big so y is very small so the spacing between peaks is very small

2. m lambda = a sin theta

so sin theta = m lambda/a

so straihgt line with slope lambda/a

3. once again staight line with slope lambda/d

4. missing order is when a diffraction minima lines up with an interference max so you dont see that max

5. the missingorder will change position

b. the spacing between fringers wil change

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