Double Slit Interference Flashcards
1
Q
Young’s fringes
A
The alternating light and dark fringes appearing on the screen
2
Q
How are bright fringes formed
A
Light from one slit reinforces light from the other so arrive in phase with each other
3
Q
How are dark fringes formed
A
Light from one slit cancels light from the other so the waves arrive 180 degrees out of phase
4
Q
Fringe separation
A
The distance from the centre of a bright fringe to the centre of the next bright fringe
5
Q
What happens when white light is used for a double slit experiment
A
Continuous spectrum is observed from blue to red then colours start to merge as each colour produces its own interference pattern
