Young's Double Slit Flashcards
1
Q
What did it help prove?
A
Light could exhibit interference and diffraction.
2
Q
Slits?
A
Two coherent sources are needed, and to solve this he used a very narrow slit and then two narrow slits after.
3
Q
What was observed?
A
Bright and dark fringes caused by wave superposition.
Dark fringes by destructive interference and bright by constructive
4
Q
Why was Huygen’s Theory still not accepted?
A
1) It assumed light was made of longitudinal waves.
2) Light could be polarised so it couldn’t be longitudinal.
3) Could not explain double refraction
