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theorem proved term proof

intensity_oscillates

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formal statement (Lean)

 108theorem intensity_oscillates (setup : DoubleSlitSetup) (y : ℝ) :
 109    intensity setup y = 4 * (Real.cos (phaseDifference setup y / 2))^2 := rfl

proof body

Term-mode proof.

 110
 111/-- **THEOREM**: Maximum intensity is 4 (constructive interference). -/

depends on (7)

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