Machines: How They Work

Machines: How They Work

Grass Trimmers, Sprinklers, and Movie Lenses (1x14)


: 21, 2016

How does a grass trimmer, a sprinkler, and a movie lens really work? Go inside the incredible machinery behind these everyday objects to see their extraordinary inner workings.

  • : 2015
  • : 20
  • : 2
  • Science Channel