# Elliptic Orbits

This PSSC science film shows that the gravitational force on the satellite obeys an inverse square relation. The derivation is almost entirely geometric in nature. Host Albert V. Baez was the father of folksinger Joan Baez.

- Kind: Educational
- Year: 1959
- Runtime: 19 min
- By: Physical Science Study Committee
- Genres: Education, Science
- Archive: [Internet Archive](https://archive.org/details/af-psscmechanical-ellipitic-orbits)
- Licence or status: none stated by the archive
- Who can watch: Kids profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/af-psscmechanical-ellipitic-orbits?play=1)