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Optics BLOCK 4 > Intereference > Flashcards

Flashcards in Intereference Deck (14):
1

W1=W2

In phase, bright, traveling same distance

2

W1 does not = W2=mlambda

Bright, in phase, one travels longer distance, path difference

3

W1 does not = W2=(m+1/2)lambda

Dark, out of phase 180, difference is not one whole wavelength

4

Condition for bright fringes (constructive interference)

dsin(theta)=m(lambda)

5

The condition for dark fringes (destructive interference)

dsin(theta)=(m+1/2)(lambda)

6

Condition for interference

Monochromatic light and mutual coherence

7

Interference obeys laws of

Conservation of energy

8

Borrower the slit distance, the greater

The angle

9

For a fixed wavelength, the fringes are wider when...

The slits are closer together (small d)

10

Thor a fixed wavelength, the fringes are narrow or finer when

The slits are farther apart (large d)

11

For a fixed slit separation (fixed d), the fringes are wider for...

Longer wavelength

12

____fringes are spread out farther than _____ fringes

Red
Blue

13

Fringes for white light illumination

Interference fringes are colored

14

The fringe width (y) decreases as ______gets reduced

Wavelength