56.1 MB (11.5 MB compressed)
5481 x 3579 pixels
46.5 x 30.2 cm ⏐ 18.3 x 11.9 in (300dpi)
ER DEGGINGER / SCIENCE PHOTO LIBRARY ER DEGGINGER / SCIENCE PHOTO LIBRARY
Wave interference pattern. Waves from two sources are interacting with each other. At the point where a wave peak from one hits a wave peak from another, or a trough hits a trough, they reinforce each other; their magnitudes are summed. This is known as constructive interference and is shown by the lightest and darkest patches. The red and yellow balls are points of destructive interference, where a trough hits a peak or vice versa and they cancel each other out.
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