9. Young's Double-Slit Experiment

Question 1

What is the double-slit formula?

Answer 1

w = λD / s

w = fringe spacing, distance between two adjacent maxima (m)
D = distance between slits and screen (m)
s = distance between slits (m)

Question 2

What was Newton’s theory of the nature of light?

Answer 2

Light was made up of tiny particles called “corpuscles”

Question 3

What could the corpuscular theory explain?

Answer 3

1. Reflection

2. Refraction

Question 4

What was Hyugens’ theory of the nature of light?

Answer 4

Light was waves

Question 5

What did Young’s double-slit experiment provide evidence for?

Answer 5

1. Diffraction

2. Interference