Diffraction and Interference Lab Name: Firm: To establish the effect of changing wavelength, slit separation and screen distance has on the interference pattern of EMR passing through a diffraction grating. Simulation: httpsdfophysics.comSb.html Desigg: LASER light (or another light source) of wavelength )L is passed through a diffraction grating of slit separation d. The resulting interference pattern is observed. Changes to wavelength, slit separation and screen distance are then made to see the resulting changes in the interference pattern. Materials: I Diffraction gratings (at least two different spacing options) 0 Variable wavelength light source (either different coloured light lters or LASERS of different colour) Procedure: (As part of your procedure identify the manipulated, responding and controlled variable for each test) Observations: Draw by hand {don't use screenshots) a diagram of the W scale shown in the simulation when you make the changes below. Change Diagram Controlled Test: Increasing 1: Increasing d: Increasing L: Smut: Stale the relationship between x and each of the following 1y'all-fables: L -) .................................................................................. d -) .................................................................................. 1-) .................................................................................. LAB ASSESSMENT Process Skills Evaluated Procedure: The following variables have been listed for each test (one mark for each test that includes all variables below): I Manipulated Variable I Controlled Variable I Responding Variable Observations A neatly presented hand drawn diagram is drawn using a ruler for each of the tests below: Note: sereenshots will not receive credit. I Control I Increasing A. I Increasing d I Increasing L A a: Q o u a o 3-: 3 h o H a H '1: a a: a p .4: u E 'Il 3': D Relationship is stated: I Increasing A. I Increasing d I Increasing L Mark