{"version":"1.0","type":"link","title":"Doppler effect - Newikis","description":"The Doppler effect (also Doppler shift) is the change in the frequency or, equivalently, the period of a wave in relation to an observer who is moving relative to the source of the wave. It is named after Christian Doppler, who described the phenomenon in 1842. A common example of a Doppler shift…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400}