The first part of this series by Norman McLaren deals only with tempo. It starts by showing the disc travelling in one move (1/24 of a second) from A to B, and progressively demonstrates slower and slower tempos.
2008
1972
1980
2004
2005
2014
2017
1990
2020
1948
2009
1957
2019
1962
1997
1932
2007