50.0 MB (1.7 MB compressed)
4180 x 4180 pixels
35.3 x 35.3 cm ⏐ 13.9 x 13.9 in (300dpi)
RUSSELL KIGHTLEY / SCIENCE PHOTO LIBRARY RUSSELL KIGHTLEY / SCIENCE PHOTO LIBRARY
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Doppler effect. Computer artwork showing the bunching up of waves in front of a moving source. The source is moving from right to left. The waves behind the source are more spread out. In light sources this change in wavelength creates a blueshift for an approaching source and a redshift for a receding source. With sound sources it creates the change in pitch as the source moves past the observer.
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