Interference and Diffraction

Newton's Rings

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Circular interference pattern formed between spherical and flat glass plates.

[In-Depth Description]

Thin Film Interference

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Interference patterns on soap films or oil slick.

[In-Depth Description]

Gold Mirror

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Thin gold-film interference selects spectral bandwidth.

Michelson Interferometer

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The classic application of spatial coherence lengths.

[In-Depth Description]

Fabry-Perot Etalon

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The most common multiple-beam interferometer.

Hear the Wall Bend

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A room size laser interferometer with audio signal output.

[In-Depth Description]

Adjustable Single Slit

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Diffraction pattern changes with slit aperture.

Slit Diffraction

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Single or multiple slit diffraction patterns with laser.

[In-Depth Description]

Edge Diffraction

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Schlieren optics is used to demonstrate the diffraction of light around objects; more simply done with razor blade and laser or white light source.

[In-Depth Description]

Diffraction Gratings

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Hand held transmission gratings or large reflection grating.

Two-Dimensional Interference

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Various two-dim gratings, apertures, Fresnel zone plates, opaque objects, and edges.

Laue Optical Analog

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2-Dim interfernce pattern as optical analog of x-ray diffraction; spinning the grating simulates polycrystaline ring patterns.

Laser Diffraction Off Ruler

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Machinist's scale used as reflective grating.

Single Photon Interference

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Wave/particle duality observed in Young's double slit experiment with camera sensitive to individual photons.

[In-Depth Description]

Poisson's Spot

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Diffraction produces a bright spot where Poisson believed there would be darkness.

[In-Depth Description]

Microwave Interference

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Young's double slit interference using microwaves.

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