One pretty easy (I didn't know the name at that time) example is, a still person in front of a moving train (at station for example). E.g. https://www.instagram

One pretty easy (I didn't know the name at that time) example is, a still person in front of a moving train (at station for example). E.g. https://www.instagram.com/p/BPpyrCMhwN_/?igshid=NmE0MzVhZDY= https://www.instagram.com/p/BPpyrCMhwN_/?igshid=NmE0MzVhZDY=