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Incoherent and Coherent superposition

Incoherent and coherent superposition. When two coherent waves of light are superimposed, the resulting intensity depends on the phases of both waves. Here a laser beam was spit into two beams that were then crossed at a small angle. Characteristic interference fringes were observed (bottom panel). For two incoherent waves, the total intensity is a sum of individual intensities. Here this was obtained by making a double exposure and blocking each beam one at a time (top panel).
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Title:
Incoherent and Coherent superposition
Caption:
Incoherent and coherent superposition. When two coherent waves of light are superimposed, the resulting intensity depends on the phases of both waves. Here a laser beam was spit into two beams that were then crossed at a small angle. Characteristic interference fringes were observed (bottom panel). For two incoherent waves, the total intensity is a sum of individual intensities. Here this was obtained by making a double exposure and blocking each beam one at a time (top panel).
Credit:
Album / Science Source / GIPhotoStock
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Image size:
3504 x 4672 px | 46.8 MB
Print size:
29.7 x 39.6 cm | 11.7 x 15.6 in (300 dpi)
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