Final answer:
Christian Doppler's work had the most influence on the field of Light waves. Doppler's principle explains the change in frequency and wavelength of a wave. His work is applied in various areas, including astronomy and medical imaging.
Step-by-step explanation:
Christian Doppler's work had the most influence on the field of Light waves. Doppler's principle, now known as the Doppler effect, explains the change in frequency and wavelength of a wave when there is relative motion between the source of the wave and the observer. This principle is applied in various areas, including astronomy, radar technology, and medical imaging.
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