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.
2004
1981
1977
1988
2017
1991
2003
2014
2012
1967
2021
1976
1979
2022
2019
1965
2024
2025