This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Doppler Shift vs Time. Graphique montrant un changement priodique de la vitesse radiale d'un objet Image trouve sur Transferred from org fr Original uploader was Kosame at org fr PDUSEREN Dan Original upload log page fr DopplerShiftvsTime Kosame bytes no montrant un changement priodique de la vitesse radiale d'un