4.6 Double Slit Diffraction

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6 Terms

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Two-Source Interference

When two coherent waves combine

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Coherent Waves

Two waves with the same frequency and phase difference

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Two-Source Interference (Water Waves) (1 benefit)

Use two dippers driven by the same oscillator to create waves. (This ensures the waves are coherent)

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Two-Source Interference (Sound Waves) (1 benefit)

Connect two loudspeakers to the same audio oscillator. (This ensures the sound waves are coherent)

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Young's Double Slit Experiment. (What does it prove)

This experiment shows that light behaves as a wave by producing an interference pattern.

Light passes through two slits, creating overlapping waves that interfere.

Maxima's (bright fringes)= constructive interference

Minimas (dark fringes) = destructive interference

(It proves light undergoes diffraction and interference — key evidence for the wave nature of light.)

<p>This experiment shows that light behaves as a wave by producing an interference pattern.</p><p>Light passes through two slits, creating overlapping waves that interfere.</p><p>Maxima's (bright fringes)= constructive interference</p><p>Minimas (dark fringes) = destructive interference</p><p>(It proves light undergoes diffraction and interference — key evidence for the wave nature of light.)</p>
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Young's double slit equation

fringe width x=λD/a