All Flashcards
Compare and contrast double-slit interference and single-slit diffraction.
Double-slit: Two coherent sources, creates evenly spaced fringes. Single-slit: One slit, creates a central maximum wider than other fringes, with decreasing intensity.
What are the key differences between interference patterns produced by double slits and diffraction gratings?
Double slits: Fewer, broader fringes. Diffraction gratings: Sharper, more distinct fringes, higher resolution.
Define 'constructive interference'.
When two or more waves overlap in phase, resulting in a wave with a larger amplitude.
Define 'destructive interference'.
When two or more waves overlap out of phase, resulting in a wave with a smaller amplitude or cancellation.
What is 'monochromatic light'?
Light of a single wavelength or frequency.
Define 'path length difference'.
The difference in the distance traveled by two waves from coherent sources to a given point.
What is a 'diffraction grating'?
An optical component with many evenly spaced parallel slits or openings that diffract light and create interference patterns.
Define 'diffraction'.
The bending of waves around obstacles or through apertures.
Label the double-slit interference diagram: (1) Slits, (2) Screen, (3) Central Maximum, (4) First Order Maximum.
1: Slits, 2: Screen, 3: Central Maximum (m=0), 4: First Order Maximum (m=1)
Label the diffraction grating spectrum: (1) Central Maximum, (2) Red Light, (3) Violet Light.
1: Central Maximum (white), 2: Red Light (farthest from center), 3: Violet Light (closest to center)