Grass Trimmers, Sprinklers, and Movie Lenses
- Episode aired Apr 21, 2016
- TV-G
- 21m
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.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.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.