| 31. | Thus you get the interference patterns you describe.
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| 32. | It is this introduced phase difference that creates the interference pattern between the initially identical waves.
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| 33. | An interference pattern results, marking out the detail.
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| 34. | When we do that, the interference pattern disappears.
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| 35. | This is important because two waves of different frequencies do not produce a stable interference pattern.
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| 36. | Measurement changes can dramatically modify the individual interference patterns, but always so that this erasure occurs.
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| 37. | Then, according to the Copenhagen interpretation, the case A applies again and the interference pattern is restored.
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| 38. | The result is that there is no change in the interference pattern, and therefore no measurement change.
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| 39. | In optical mineralogy, a petrographic microscope and cross-polarised light are often used to view the interference pattern.
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| 40. | In physics-speak, the moire effect is " a beat frequency between two other frequencies creating an interference pattern,"
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